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-rw-r--r--fonts/mbboard/source/COMP5
-rw-r--r--fonts/mbboard/source/COMPILE27
-rw-r--r--fonts/mbboard/source/mbb10.mf23
-rw-r--r--fonts/mbboard/source/mbb12.mf23
-rw-r--r--fonts/mbboard/source/mbb17.mf23
-rw-r--r--fonts/mbboard/source/mbb5.mf18
-rw-r--r--fonts/mbboard/source/mbb6.mf20
-rw-r--r--fonts/mbboard/source/mbb7.mf20
-rw-r--r--fonts/mbboard/source/mbb8.mf19
-rw-r--r--fonts/mbboard/source/mbb9.mf18
-rw-r--r--fonts/mbboard/source/mbbaccnt.mf270
-rw-r--r--fonts/mbboard/source/mbbbase.mf848
-rw-r--r--fonts/mbboard/source/mbbcr10.mf20
-rw-r--r--fonts/mbboard/source/mbbcrkdr.mf167
-rw-r--r--fonts/mbboard/source/mbbcrklo.mf312
-rw-r--r--fonts/mbboard/source/mbbcrkup.mf322
-rw-r--r--fonts/mbboard/source/mbbdigit.mf229
-rw-r--r--fonts/mbboard/source/mbbdrivr.mf307
-rw-r--r--fonts/mbboard/source/mbbextra.mf7
-rw-r--r--fonts/mbboard/source/mbbgr10.mf20
-rw-r--r--fonts/mbboard/source/mbbgrkdr.mf124
-rw-r--r--fonts/mbboard/source/mbbgrklo.mf875
-rw-r--r--fonts/mbboard/source/mbbgrkup.mf599
-rw-r--r--fonts/mbboard/source/mbbheb10.mf27
-rw-r--r--fonts/mbboard/source/mbbhebdr.mf79
-rw-r--r--fonts/mbboard/source/mbbhebma.mf349
-rw-r--r--fonts/mbboard/source/mbbhebrw.mf795
-rw-r--r--fonts/mbboard/source/mbbhebvw.mf210
-rw-r--r--fonts/mbboard/source/mbbi10.mf18
-rw-r--r--fonts/mbboard/source/mbblight.mf100
-rw-r--r--fonts/mbboard/source/mbbpunct.mf549
-rw-r--r--fonts/mbboard/source/mbbr10.mf23
-rw-r--r--fonts/mbboard/source/mbbrbx10.mf23
-rw-r--r--fonts/mbboard/source/mbbromlg.mf191
-rw-r--r--fonts/mbboard/source/mbbromlo.mf443
-rw-r--r--fonts/mbboard/source/mbbromup.mf465
-rw-r--r--fonts/mbboard/source/mbbromxl.mf197
-rw-r--r--fonts/mbboard/source/mbbromxu.mf111
-rw-r--r--fonts/mbboard/source/mbbsc10.mf28
-rw-r--r--fonts/mbboard/source/mbbsl10.mf18
-rw-r--r--fonts/mbboard/source/mbbsmcdr.mf121
-rw-r--r--fonts/mbboard/source/mbbsymbl.mf554
-rw-r--r--fonts/mbboard/source/mbbx10.mf23
-rw-r--r--fonts/mbboard/source/mbbx12.mf23
-rw-r--r--fonts/mbboard/source/mbbx17.mf23
-rw-r--r--fonts/mbboard/source/mbbx5.mf18
-rw-r--r--fonts/mbboard/source/mbbx6.mf20
-rw-r--r--fonts/mbboard/source/mbbx7.mf20
-rw-r--r--fonts/mbboard/source/mbbx8.mf19
-rw-r--r--fonts/mbboard/source/mbbx9.mf18
-rw-r--r--fonts/mbboard/source/mbbxbold.mf70
51 files changed, 8831 insertions, 0 deletions
diff --git a/fonts/mbboard/source/COMP b/fonts/mbboard/source/COMP
new file mode 100644
index 0000000000..7faede4096
--- /dev/null
+++ b/fonts/mbboard/source/COMP
@@ -0,0 +1,5 @@
+#!/bin/bash
+mf "\mode=ljfour; mag=1.2; input $1"; gftopk $1.720gf;
+mf "\mode=ljfour; input $1"; gftopk $1.600gf;
+
+mv *.tfm ../tfm; mv *pk ../pk; rm *gf; rm *.log;
diff --git a/fonts/mbboard/source/COMPILE b/fonts/mbboard/source/COMPILE
new file mode 100644
index 0000000000..89efb8e181
--- /dev/null
+++ b/fonts/mbboard/source/COMPILE
@@ -0,0 +1,27 @@
+#! /bin/bash
+# blackboard typefaces by Anthony Phan.
+# file: @compile (stupid compilation script)
+# last modification: 09.08.2001.
+#
+# This script is helful for me. I just type 'bash @compile'
+# then drink my coffee. It produces metrics and bitmaps (pk)
+# for the 'ljfour' mode, then it wipes out temporary files
+# and put the useful stuff in some directory...
+# PLEASE CHANGE THE THIS FILE FOR YOUR OWN NEEDS.
+
+for xx in 17 12 10 9 8 7 6 5
+do
+ mf "\mode=ljfour; input mbb$xx"; gftopk mbb$xx.600gf;
+ mf "\mode=ljfour; mag=1.2; input mbb$xx"; gftopk mbb$xx.720gf;
+ mf "\mode=ljfour; input mbbx$xx"; gftopk mbbx$xx.600gf;
+ mf "\mode=ljfour; mag=1.2; input mbbx$xx"; gftopk mbbx$xx.720gf;
+done;
+
+for fontxx in mbbheb10 mbbgr10 mbbi10 mbbsl10 mbbsc10 mbbr10 mbbcr10
+do
+ mf "\mode=ljfour; input $fontxx"; gftopk $fontxx.600gf;
+ mf "\mode=ljfour; mag=1.2; input $fontxx"; gftopk $fontxx.720gf;
+done;
+
+mv *.tfm ../tfm; mv *pk ../pk; rm *gf; rm *.log;
+
diff --git a/fonts/mbboard/source/mbb10.mf b/fonts/mbboard/source/mbb10.mf
new file mode 100644
index 0000000000..23645cf42f
--- /dev/null
+++ b/fonts/mbboard/source/mbb10.mf
@@ -0,0 +1,23 @@
+% blackboard typefaces by Anthony Phan.
+% file: mbb10.mf (parameters' file for 10 points fonts)
+% last modification: 25.10.2001.
+
+if unknown mbbbase: input mbbbase fi
+
+font_identifier:="mbb"; font_size 10pt#;
+
+slant:=0;
+%math_fitting:=true;
+square_dots:=true;
+straight_bowl:=true;
+variant_a:=false; variant_f:=false;
+variant_g:=false; variant_y:=false;
+old_digits:=false; square_hebrew:=true;
+ab_up_factor:=0; ab_down_factor:=0;
+hmn_factor:=0; uy_factor:=0;
+
+input mbblight;
+input mbbdrivr;
+
+
+
diff --git a/fonts/mbboard/source/mbb12.mf b/fonts/mbboard/source/mbb12.mf
new file mode 100644
index 0000000000..0daa3c7e4e
--- /dev/null
+++ b/fonts/mbboard/source/mbb12.mf
@@ -0,0 +1,23 @@
+% blackboard typefaces by Anthony Phan.
+% file: mbb12.mf (parameters' file for 12 points fonts)
+% last modification: 25.10.2001.
+
+if unknown mbbbase: input mbbbase fi
+
+font_identifier:="mbb"; font_size 12pt#;
+
+slant:=0;
+square_dots:=true;
+variant_a:=false; variant_f:=false;
+variant_g:=false; variant_y:=false;
+square_hebrew:=true;
+ab_up_factor:=0; ab_down_factor:=0;
+hmn_factor:=0; uy_factor:=0;
+
+input mbblight;
+input mbbdrivr;
+
+
+
+
+
diff --git a/fonts/mbboard/source/mbb17.mf b/fonts/mbboard/source/mbb17.mf
new file mode 100644
index 0000000000..0751c1240f
--- /dev/null
+++ b/fonts/mbboard/source/mbb17.mf
@@ -0,0 +1,23 @@
+% blackboard typefaces by Anthony Phan.
+% file: mbb17.mf (parameters' file for 17 points fonts)
+% last modification: 25.10.2001.
+
+if unknown mbbbase: input mbbbase fi
+
+font_identifier:="mbb"; font_size 17pt#;
+
+slant:=0;
+%math_fitting:=true;
+square_dots:=true;
+straight_bowl:=true;
+variant_a:=false; variant_f:=false;
+variant_g:=false; variant_y:=false;
+old_digits:=false; square_hebrew:=true;
+ab_up_factor:=0; ab_down_factor:=0;
+hmn_factor:=0; uy_factor:=0;
+
+input mbblight;
+input mbbdrivr;
+
+
+
diff --git a/fonts/mbboard/source/mbb5.mf b/fonts/mbboard/source/mbb5.mf
new file mode 100644
index 0000000000..f43eabffa5
--- /dev/null
+++ b/fonts/mbboard/source/mbb5.mf
@@ -0,0 +1,18 @@
+% blackboard typefaces by Anthony Phan.
+% file: mbb5.mf (parameters' file for 5 points fonts)
+% last modification: 25.10.2001.
+
+if unknown mbbbase: input mbbbase fi
+
+font_identifier:="mbb"; font_size 5pt#;
+
+slant:=0;
+square_dots:=true;
+variant_a:=false; variant_f:=false;
+variant_g:=false; variant_y:=false;
+old_digits:=false; square_hebrew:=true;
+ab_up_factor:=0; ab_down_factor:=0;
+hmn_factor:=0; uy_factor:=0;
+
+input mbblight;
+input mbbdrivr; \ No newline at end of file
diff --git a/fonts/mbboard/source/mbb6.mf b/fonts/mbboard/source/mbb6.mf
new file mode 100644
index 0000000000..3cb6e00bd2
--- /dev/null
+++ b/fonts/mbboard/source/mbb6.mf
@@ -0,0 +1,20 @@
+% blackboard typefaces by Anthony Phan.
+% file: mbb6.mf (parameters' file for 6 points fonts)
+% last modification: 25.10.2001.
+
+if unknown mbbbase: input mbbbase fi
+
+font_identifier:="mbb"; font_size 6pt#;
+
+slant:=0;
+square_dots:=true;
+variant_a:=false; variant_f:=false;
+variant_g:=false; variant_y:=false;
+old_digits:=false; square_hebrew:=true;
+ab_up_factor:=0; ab_down_factor:=0;
+hmn_factor:=0; uy_factor:=0;
+
+input mbblight;
+input mbbdrivr;
+
+
diff --git a/fonts/mbboard/source/mbb7.mf b/fonts/mbboard/source/mbb7.mf
new file mode 100644
index 0000000000..29f1294c4f
--- /dev/null
+++ b/fonts/mbboard/source/mbb7.mf
@@ -0,0 +1,20 @@
+% blackboard typefaces by Anthony Phan.
+% file: mbb8.mf (parameters' file for 7 points fonts)
+% last modification: 25.10.2001.
+
+if unknown mbbbase: input mbbbase fi
+
+font_identifier:="mbb"; font_size 7pt#;
+
+slant:=0; % tilt ratio $(\Delta x/\Delta y)$
+square_dots:=true; % should dots be square?
+variant_a:=false; variant_f:=false;
+variant_g:=false; variant_y:=false;
+old_digits:=false; square_hebrew:=true;
+ab_up_factor:=0; ab_down_factor:=0;
+hmn_factor:=0; uy_factor:=0;
+
+input mbblight;
+input mbbdrivr;
+
+
diff --git a/fonts/mbboard/source/mbb8.mf b/fonts/mbboard/source/mbb8.mf
new file mode 100644
index 0000000000..82186e0185
--- /dev/null
+++ b/fonts/mbboard/source/mbb8.mf
@@ -0,0 +1,19 @@
+% blackboard typefaces by Anthony Phan.
+% file: mbb8.mf (parameters' file for 8 points fonts)
+% last modification: 25.10.2001.
+
+if unknown mbbbase: input mbbbase fi
+
+font_identifier:="mbb"; font_size 8pt#;
+
+slant:=0;
+square_dots:=true;
+variant_a:=false; variant_f:=false;
+variant_g:=false; variant_y:=false;
+old_digits:=false; square_hebrew:=true;
+ab_up_factor:=0; ab_down_factor:=0;
+hmn_factor:=0; uy_factor:=0;
+
+input mbblight;
+input mbbdrivr;
+
diff --git a/fonts/mbboard/source/mbb9.mf b/fonts/mbboard/source/mbb9.mf
new file mode 100644
index 0000000000..438c9e08f4
--- /dev/null
+++ b/fonts/mbboard/source/mbb9.mf
@@ -0,0 +1,18 @@
+% blackboard typefaces by Anthony Phan.
+% file: mbb9.mf (parameters' file for 9 points fonts)
+% last modification: 25.10.2001.
+
+if unknown mbbbase: input mbbbase fi
+
+font_identifier:="mbb"; font_size 9pt#;
+
+slant:=0;
+square_dots:=true;
+variant_a:=false; variant_f:=false;
+variant_g:=false; variant_y:=false;
+old_digits:=false; square_hebrew:=true;
+ab_up_factor:=0; ab_down_factor:=0;
+hmn_factor:=0; uy_factor:=0;
+
+input mbblight;
+input mbbdrivr;
diff --git a/fonts/mbboard/source/mbbaccnt.mf b/fonts/mbboard/source/mbbaccnt.mf
new file mode 100644
index 0000000000..536c470bca
--- /dev/null
+++ b/fonts/mbboard/source/mbbaccnt.mf
@@ -0,0 +1,270 @@
+% blackboard typefaces by Anthony Phan.
+% file: mbbaccnt.mf (accents)
+% last modification: 25.10.2001.
+
+diacritics_proofing;% changes extra_endchar for proof mode.
+
+def horizontal_rules_list=
+ -body_depth,-desc_depth,x_height,cap_height,asc_height,body_height
+enddef;
+
+% italic corrections to be revised
+
+use_rule1;
+
+numeric tmp_h; tmp_h=x_height;
+
+beginchar(bbgrave,8u#+2appr#,min(asc_height#,2x_height#),0);
+ "Grave accent";
+ italcorr asc_height#*slant-0.5u#;
+ complete_grave(apprl,apprr);
+endchar;
+
+beginchar(bbacute,8u#+2appr#,min(asc_height#,2x_height#),0);
+ "Acute accent";
+ italcorr asc_height#*slant-0.5u#;
+ complete_acute(apprl,apprr);
+endchar;
+
+beginchar(bbcircumflex,8u#+2appr#,min(asc_height#,2x_height#),0);
+ "Circumflex accent";
+ italcorr asc_height#*slant-0.5u#;
+ complete_hat(apprl,apprr);
+endchar;
+
+iff known bbwide_circumflex:
+beginchar(bbwide_circumflex,10u#+2appr#,min(asc_height#,2x_height#),0);
+ "Wide circumflex accent";
+ italcorr asc_height#*slant-0.5u#;
+ complete_hat(apprl,apprr);
+endchar;
+
+beginchar(bbhacheck,8u#+2appr#,min(asc_height#,2x_height#),0);
+ "Hackeck accent";
+ italcorr asc_height#*slant-0.5u#;
+ complete_hacheck(apprl,apprr);
+endchar;
+
+beginchar(bbtilde,8u#+2appr#,min(asc_height#,2x_height#),0);
+ "The tilde accent";
+ italcorr asc_height#*slant-0.5u#;
+ numeric a; if square_dots: a=0; else: a=hround 0.5u; fi
+ complete_tilde(apprl+a,apprr+a);
+endchar;
+
+iff known bbwide_tilde:
+beginchar(bbwide_tilde,10u#+2appr#,min(asc_height#,2x_height#),0);
+ "The wide tilde accent";
+ italcorr asc_height#*slant-0.5u#;
+ numeric a; if square_dots: a=0; else: a=hround 0.5u; fi
+ complete_tilde(apprl+a,apprr+a);
+endchar;
+
+iff known bbbreve:
+beginchar(bbbreve,8u#+2appr#,min(asc_height#,2x_height#),0);
+ "Breve accent";
+ italcorr asc_height#*slant-0.5u#;
+ pickup circle.nib; top y1=top y3=h;
+ lft x1=apprl+hround u; rt x3=w-apprr-hround u;
+ bot y2=vround 1/3[tmp_h,h]; x2=0.5[x1,x3];
+ draw z1 down_to_right z2 right_to_up z3;
+ square_end1(up); square_end3(up);
+ labels(1,2,3);
+endchar;
+
+iff known bbmacron:
+beginchar(bbmacron,8u#+2appr#,0.4[x_height#,asc_height#]+thin#,0);
+ "Macron accent";
+ italcorr asc_height#*slant-0.5u#;
+ pickup circle.nib; top y1=top y2=h;
+ lft x1-apprl=w-apprr-rt x2=hround 0.5u;
+ pickup square.nib; draw z1..z2; labels(1,2);
+endchar;
+
+beginchar(bbdotaccent,8u#+2appr#,
+ min(asc_height#,10/7x_height#+0.5dot_size#),0);
+ "Dot accent";
+ italcorr charht*slant-0.5u#;
+ pickup circle.nib; center_bar(1,2); top y2=h;
+ bot y1=vround max(h-dot_size,x_height+o);
+ dot(1,2); labels(1,2);
+endchar;
+
+% It's height has been corrected to fit french trema
+beginchar(bbumlaut,8u#+2appr#,
+ min(asc_height#,10/7x_height#
+ if not low_umlaut: +0.5dot_size# fi),0);
+ "Umlaut accent";
+ italcorr charht*slant-.5u#;
+ pickup circle.nib; x2-x1=x4-x3=hthick;
+ lft x1-apprl=w-apprr-rt x4=hround 0.5u;
+ top y2=top y4=h;
+ bot y1=bot y3=vround max(h-dot_size,x_height+o);
+ dot(1,2); dot(3,4); labels(1,2,3,4);
+endchar;
+
+iff known bblong_umlaut:
+beginchar(bblong_umlaut,8u#+2appr#,min(asc_height#,2x_height#),0);
+ "Long hungarian Umlaut accent";
+ italcorr charht*slant-.5u#;
+ complete_long_umlaut(apprl,apprr);
+endchar;
+
+% If one compare the next program with the cm corresponding one,
+% he would see that apex_o is missing from the line above. The reason is
+% that our 'A' does not overshoot its upper limit.
+
+iff known bbcirc_accent:
+beginchar(bbcirc_accent,11.5u#+4/3(asc_height#-x_height#)*slant+2appr#,
+ asc_height#,0);
+ "The scandinavian circle accent";
+ italcorr charht*slant-.5u#;
+ pickup circle.nib;
+ top y2=h+o; bot y4=vround(1/3[x_height,h])-eps;
+ y0=y1=y3=0.5[y4,y2]; x0=x2=x4=0.5[apprl,w-apprr];
+ lft x3=hround (x0-0.5max(hThick+thin,3u+thin))-eps;
+ x1-x0=x0-x3; draw superellipse(z1,z2,z3,z4,superness);
+ labels(1,2,3,4,0);
+endchar;
+
+iff known bbcedilla:
+beginchar(bbcedilla,8u#+2appr#,0,desc_depth#);
+ "The cedilla accent";
+% no italic correction
+ complete_cedilla(0.5[apprl,w-apprr],-0.5thin);
+ square_end1(up);
+endchar;
+
+% Polish accents.
+
+iff known bbleft_slanted_cross:
+beginchar(bbleft_slanted_cross,0,asc_height#,0);
+ "The left slanted cross";
+% no italic correction
+ pickup circle.nib; lft x3l=apprl; x2l=x3l+hthick;
+ x0=rt x2l; y0=vround x_height+.25; apprl-x4l=x1l-x0=y1l-y0=hround(u);
+ y1l-y1r=thin/((1++slant)*sind angle((z1l-z0)slanted slant));
+ x1r=x1l; z4l=whatever[z0,z1l]; z3l=whatever[z0,z1l];
+ z2l=whatever[z0,z1l]; z2l-z2r=z3l-z3r=z4l-z4r=z1l-z1r;
+ penstroke z1e..z2e; penstroke z3e..z4e;
+ penlabels(0,1,2,3,4);
+endchar;
+
+iff known bbogonek:
+beginchar(bbogonek,thin#+2appr#,0,desc_depth#);
+ "The ogonek accent";
+% no italic correction
+ center_stem(0); complete_ogonek(x0,-0.5thin);
+ square_end1(up);
+endchar;
+
+% Greek accents.
+
+iff known bbstraight_accent:
+beginchar(bbstraight_accent,8u#+2appr#,min(asc_height#,2x_height#),0);
+ "Greek straight accent";
+ italcorr asc_height#*slant-0.5u#;
+ if square_dots:
+ center_bar(1,2); x3=x2; x4=x1;
+ top y3=top y4=h; bot y1=bot y2=vround 1/5[x_height,h];
+ pickup square.nib; draw z1--z2--z3--z4--cycle;
+ labels(1,2,3,4);
+ else:
+ x1=x2=hround(0.5[apprl,w-apprr]-0.5dot_size)+0.5dot_size;
+ y2=h+o-dot_size/2; y1=vround 1/5[x_height,h]+dot_size/4;
+ long_dot(1,2);
+ fi
+endchar;
+
+iff known bbrough:
+beginchar(bbrough,8u#+2appr#,min(asc_height#,2x_height#),0);
+ "Greek rough accent";
+ italcorr asc_height#*slant-0.5u#;
+ pickup circle.nib;
+ top y4=h; bot y1=vround 1/5[x_height,h];
+ lft x3-apprl=w-apprr-rt x1=hround 2u; x5-x3=hthick;
+ complete_comma;
+endchar;
+
+iff known bbsmooth:
+beginchar(bbsmooth,8u#+2appr#,min(asc_height#,2x_height#),0);
+ "Greek smooth accent";
+ italcorr asc_height#*slant-0.5u#;
+ pickup circle.nib;
+ top y4=h; bot y1=vround 1/5[x_height,h];
+ lft x1-apprl=w-apprr-rt x3=hround 2u; x3-x5=hthick;
+ complete_comma;
+endchar;
+
+iff known bbgreek_tilde:
+beginchar(bbgreek_tilde,8u#+2appr#,
+ min(asc_height#,10/7x_height#+0.5dot_size#),0);
+ "Greek tilde accent";
+ italcorr asc_height#*slant-0.5u#;
+ pickup circle.nib;
+ top y2=top y6=h-vround 0.25dot_size;
+ bot y1=bot y5=h-dot_size;
+ lft x1-apprl=w-apprr-rt x6=hround 0.75u;
+ z0=0.5[z1,z6]; slope:=-dot_size/4u;
+ hellipse_set(1,2,3,0); hellipse_set(6,5,4,0);
+ draw z1 up_to_right z2...z3---z4...z5 right_to_up z6;
+ square_end1(down); square_end6(up);
+ labels(0,1,2,3,4,5,6);
+endchar;
+
+iff known bbrough_tilde:
+beginchar(bbrough_tilde,8u#+2appr#,body_height#,0);
+ "Greek rough and tilde accent";
+ italcorr asc_height#*slant-0.5u#;
+ pickup circle.nib;
+ % rough
+ top y4'=vround min(h-0.75dot_size,asc_height,2x_height);
+ bot y1'=vround 1/5[x_height,top y4'];
+ lft x3'-apprl=w-apprr-rt x1'=hround 2u; x5'-x3'=hthick;
+ % tilde
+ top y2=top y6=h+o; bot y1=bot y5=h+o-vround 0.75dot_size;
+ lft x1-apprl=w-apprr-rt x6=hround 0.75u;
+ z0=0.5[z1,z6]; slope:=-dot_size/4u;
+ hellipse_set(1,2,3,0); hellipse_set(6,5,4,0);
+ draw z1 up_to_right z2...z3---z4...z5 right_to_up z6;
+ square_end1(down); square_end6(up);
+ complete_comma'; labels(0,1,2,3,4,5,6);
+endchar;
+
+iff known bbsmooth_tilde:
+beginchar(bbsmooth_tilde,8u#+2appr#,body_height#,0);
+ "Greek smooth and tilde accent";
+ italcorr asc_height#*slant-0.5u#;
+ pickup circle.nib;
+ % smooth
+ top y4'=vround min(h-0.75dot_size,asc_height,2x_height);
+ bot y1'=vround 1/5[x_height,top y4'];
+ lft x1'-apprl=w-apprr-rt x3'=hround 2u; x3'-x5'=hthick;
+ % tilde
+ top y2=top y6=h+o; bot y1=bot y5=h+o-vround 0.75dot_size;
+ lft x1-apprl=w-apprr-rt x6=hround 0.75u;
+ z0=0.5[z1,z6]; slope:=-dot_size/4u;
+ hellipse_set(1,2,3,0); hellipse_set(6,5,4,0);
+ draw z1 up_to_right z2...z3---z4...z5 right_to_up z6;
+ square_end1(down); square_end6(up);
+ complete_comma'; labels(0,1,2,3,4,5,6);
+endchar;
+
+iff known bbsubscript_iota:
+beginchar(bbsubscript_iota,8u#+2appr#,0,desc_depth#);
+ "Subscript iota";
+% no italic correction
+ center_bar(4,5); x3=x4; x2=0.5[x1,x4];
+ rt x1-lft x4=hround max(3u,hthick+thin+1.7u);
+ bot y2=-(desc_depth+o+dot_skip);
+ top y4=vround(h-o-dot_skip);
+ y1=y3=good.y(0.3[y2,y4]);
+ tmp_path:=z1 down_to_left z2 left_to_up z3..z4;
+ draw tmp_path;
+ hbbowl(z2,z3,z4,hthick) tmp_path;
+ pickup square.nib; draw z4..z.bowl.bot;
+ square_end1(up); labels(1,2,3,4);
+endchar;
+
+standard_proofing;% restore extra_endchar.
+
diff --git a/fonts/mbboard/source/mbbbase.mf b/fonts/mbboard/source/mbbbase.mf
new file mode 100644
index 0000000000..ed450b9d90
--- /dev/null
+++ b/fonts/mbboard/source/mbbbase.mf
@@ -0,0 +1,848 @@
+% blackboard typefaces by Anthony Phan.
+% file: mbbbase.mf (base file)
+% last modification: 25.10.2001.
+
+mbbbase:=1; % when |mbbbase| is known, this file has been input
+
+newinternal slant, math_spread, superness;
+superness:=1/sqrt 2;% initialisation
+superbowl:=superness;
+
+boolean math_fitting, square_dots,old_digits,
+variant_a,variant_f,variant_g,variant_y,
+low_umlaut,square_hebrew,dagesh_mark;
+math_fitting=false; low_umlaut=true;
+square_hebrew=true; dagesh_mark=false;
+
+string normal_extra_endchar, tmp_string;
+normal_extra_endchar:=extra_endchar;
+
+path tmp_path,tmpp_path,last_path,bowl_path;
+
+def font_setup=
+ autorounding:=0; smoothing:=0;
+ clear_pen_memory;
+ define_pixels(u,dh);
+ define_whole_vertical_pixels(body_height,asc_height,
+ cap_height,fig_height,x_height,desc_depth,dot_size);
+ $:=1;
+ forever:
+ exitif unknown thin[$].#;
+ define_whole_blacker_pixels(thin[$]);
+ hthick[$].#:=thick[$].#*(1++slant);
+ hThick[$].#:=Thick[$].#*(1++slant);
+ define_whole_pixels(thick[$],Thick[$],hthick[$],hThick[$])
+ hthick[$]:=thick[$]*(1++slant);
+ hThick[$]:=Thick[$]*(1++slant);
+ lowres_fix(thick[$],Thick[$]) 1.2;
+ lowres_fix(hthick[$],hThick[$]) 1.2;
+ pickup pencircle scaled thin[$]; circle.nib[$]:=savepen;
+ pickup makepen((((.5,.5)--(-.5,.5)--(-.5,-.5)--(.5,-.5)--cycle)
+ xscaled ((1++slant)*thin[$]) yscaled thin[$])slanted slant);
+ square.nib[$]:=savepen;
+ $:=$+1;
+ endfor
+ dot_skip#:=max(1.5o#,0.5u#);
+ define_whole_pixels(dot_skip);
+ dot_skip:=max(1,dot_skip);
+ numeric paren_depth#,asc_depth#,body_depth#,
+ comma_size#,appr#,Appr#,
+ comma_size,apprl,apprr,Apprl,Apprr,ess,cap_ess;
+ oo:=vround(0.5o#*hppp*o_correction)+eps;
+ uo:=vround 1.5oo+eps;
+ define_corrected_pixels(o);
+ define_horizontal_corrected_pixels(ho);
+ appr#=u#+letter_fit#; Appr#=1.5u#+letter_fit#;
+ apprl=floor(0.5hround(2appr#*hppp));
+ apprr=ceiling(0.5hround(2appr#*hppp));
+ Apprl=floor(0.5hround(2Appr#*hppp));
+ Apprr=ceiling(0.5hround(2Appr#*hppp));
+ ess=(ess#/thick1#)*thick1;
+ cap_ess=(cap_ess#/thick2#)*thick2;
+ 0.5[body_height#,-paren_depth#]=math_axis#;
+ 0.5[asc_height#,-asc_depth#]=math_axis#;
+ body_depth#:=desc_depth#+body_height#-asc_height#;
+ define_whole_vertical_pixels(asc_depth,body_depth,paren_depth);
+ comma_size#=min(dot_size#+desc_depth#,asc_height#-x_height#+thin1#);
+ comma_size=min(dot_size+desc_depth,asc_height-x_height+thin1);
+ rule_thickness:=ceiling(rule_thickness#*hppp);
+ pickup pencircle scaled rule_thickness; rule.nib:=savepen;
+ math_axis:=good.y(math_axis#*hppp);
+ if slant>0:
+ currenttransform:=identity slanted slant;
+ else:
+ currenttransform:=identity yscaled aspect_ratio scaled granularity;
+ fi
+ use_rule1;
+% shrink_fit:=1+hround(2letter_fit#*hppp)
+% -2hround(letter_fit#*hppp);
+ if math_fitting: let math_fit=do_math_fit;
+ else: let math_fit=ignore_math_fit; fi
+ extra_font_setup;
+enddef;
+
+def extra_font_setup= enddef;
+
+% not as complex as Knuth's macros.
+
+def ignore_math_fit(expr left_adjustment,right_adjustment)=enddef;
+
+def do_math_fit(expr left_adjustment,right_adjustment)=
+ interim xoffset:=hround(left_adjustment*hppp);
+ charwd:=charwd+left_adjustment+right_adjustment;
+ w:=hround(charwd*hppp);
+ charic:=charic-right_adjustment; if charic<0: charic:=0; fi
+enddef;
+
+vardef ic#=charic enddef;
+
+def padded expr del_sharp=
+ charht:=charht+del_sharp; chardp:=chardp+del_sharp
+enddef;
+
+vardef use_rule@#=
+ circle.nib:=circle.nib@#;
+ square.nib:=square.nib@#;
+ thin#:=thin@#.#; thin:=thin@#;
+ thick:=thick@#; hthick:=hthick@#;
+ Thick:=Thick@#; hThick:=hThick@#;
+ thick#:=thick@#.#; hthick#:=hthick@#.#;
+ Thick#:=Thick@#.#; hThick#:=hThick@#.#;
+enddef;
+
+vardef ortho_penpos@#(expr $,$$)=
+ (x@#r-x@#l,y@#r-y@#l)
+ =$*((0,-1)rotated angle($$ slanted slant))slanted -slant;
+ (x@#r-x@#,y@#r-y@#)=(x@#-x@#l,y@#-y@#l)
+enddef;
+
+vardef stroke text t =
+ forsuffixes e = l,r: path_.e:=t; endfor
+ if cycle path_.l:
+ errmessage "Beware: `stroke' doesn't work with cycles";
+ fi
+ path_.l -- reverse path_.r -- cycle
+enddef;
+
+def diag_width(expr $,$$)=
+ $/abs sind angle($$ slanted slant)
+enddef;
+
+vardef square_end@#(expr $)=
+ save x_,y_;
+ (x_,y_)=unitvector($);
+ ortho_penpos@#(thin,(x_,y_));
+ z@#b=z@#+0.5(x_,y_)*(thin)*((y_-slant*x_)++(-x_));
+ z@#a-z@#b=z@#b-z@#c=whatever*(y_,-x_);
+ z@#a-z@#r=whatever*(x_,y_);
+ x@#.a:=0.5hround 2x@#.a; x@#.c:=0.5hround 2x@#.c;
+ y@#.a:=0.5vround 2y@#.a; y@#.c:=0.5vround 2y@#.c;
+ erase fill z@#.a--z@#.a+(x_,y_)--z@#.c+(x_,y_)--z@#.c--cycle;
+ fill z@#r--z@#a--z@#c--z@#l--cycle;
+ labels(@#a,@#b,@#c,@#r,@#l)
+enddef;
+
+% $ <---> $$$; $$ <---> $$$$. sign=+1 for X, -1 for Z.
+
+vardef adjust_slanted_bar(suffix $,$$,$$$,$$$$)(expr bar_thick,sign)=
+ save a,b;
+ if abs(y$$-y$)=bar_thick:
+ (a1,a2)=(z$$-z$)slanted slant;
+ if a1=0: b=0;% b should then be infinite.
+ else: b=if sign<0: - fi (a1++a2)*((a1++a2)/2a1);
+ fi
+ else:
+ a=angle((z$$-z$)slanted slant);
+ b=(cosd(a)/sind(a) if sign<0: - else: + fi
+ (((y$$-y$)/(bar_thick)/sind(a))+-+1))
+ /(((y$$-y$)/(bar_thick))**2-1)*(y$$-y$);
+ fi
+ z$$$=(x$-b,y$); z$$$$=(x$$+b,y$$)
+enddef;
+
+% ellipses and related things.
+
+primarydef w up_to_right z=
+ w{0,ypart(z-w)}
+ ...(superness[xpart z,xpart w],
+ superness[ypart w,ypart z]){z-w}
+ ...{xpart(z-w),0}z
+enddef;
+let up_to_left=up_to_right;
+let down_to_right=up_to_right;
+let down_to_left=up_to_right;
+primarydef w right_to_up z=
+ w{xpart(z-w),0}
+ ...(superness[xpart w,xpart z],
+ superness[ypart z,ypart w]){z-w}
+ ...{0,ypart(z-w)}z
+enddef;
+let right_to_down=right_to_up;
+let left_to_up=right_to_up;
+let left_to_down=right_to_up;
+
+primarydef w flat_up_to_right z=
+ flat_up_to_right_(w,z)...{xpart(z-w),0}z
+enddef;
+vardef flat_up_to_right_(expr w,z)=
+ save z_,z__; pair z_,z__;
+ z_=(superness[xpart z,xpart w],superness[ypart w,ypart z]);
+ xpart z__=xpart w; z__-z_=whatever*(w-z);
+ w..controls 0.5(w+z__) and z__..z_{z-w}
+enddef;
+let flat_up_to_left=flat_up_to_right;
+let flat_down_to_right=flat_up_to_right;
+let flat_down_to_left=flat_up_to_right;
+primarydef w flat_right_to_up z=
+ flat_right_to_up_(w,z)...{0,ypart(z-w)}z
+enddef;
+vardef flat_right_to_up_(expr w,z)=
+ save z_,z__; pair z_,z__;
+ z_=(superness[xpart w,xpart z],superness[ypart z,ypart w]);
+ ypart z__=ypart w; z__-z_=whatever*(w-z);
+ w..controls 0.5(w+z__) and z__..z_{z-w}
+enddef;
+let flat_right_to_down=flat_right_to_up;
+let flat_left_to_up=flat_right_to_up;
+let flat_left_to_down=flat_right_to_up;
+
+% Mighty macro by D. E. Knuth
+
+def ellipse_set(suffix $,@,@@,$$)=
+ alpha_:=slope*(x@-x$); beta_:=y$$-y$-slope*(x$$-x$);
+ gamma_:=alpha_/beta_;
+ y@-y$=.5(beta_-alpha_*gamma_);
+ x@@-x$=-2gamma_*(x@-x$)/(1+gamma_*gamma_);
+ y@@-y$$=slope*(x@@-x$$)
+enddef;
+
+def hellipse_set(suffix $,@,@@,$$)=
+ alpha_:=(y@-y$)/slope; beta_:=x$$-x$-(y$$-y$)/slope;
+ gamma_:=alpha_/beta_;
+ x@-x$=.5(beta_-alpha_*gamma_);
+ y@@-y$=-2gamma_*(y@-y$)/(1+gamma_*gamma_);
+ x@@-x$$=(y@@-y$$)/slope
+enddef;
+
+vardef elliptic_arc(suffix $,$$,$$$)=
+ save x_,t,p_; path p_;
+ p_=z$ up_to_right (x$+5u,y$$) right_to_down (x$+10u,y$);
+ t=xpart(p_ intersectiontimes ((x$+5u,y$$$)..(x$+10u,y$$$)));
+ x_=xpart(point t of p_); x$$-x$=5u*((x$$$-x$)/(x_-x$));
+ p_:=((p_ shifted (-x$,0)) xscaled ((x$$$-x$)/(x_-x$))) shifted (x$,0);
+ y$$$'=y$$; z$$$'-z$$$=whatever*(direction t of p_);
+ subpath (0,t) of p_
+enddef;
+
+def autorounded=
+ interim smoothing:=2; interim autorounding:=2
+enddef;
+
+def center_bar(suffix $,$$)=
+ pickup circle.nib;
+ if hround((w+apprl-apprr-hthick-thin)/2)
+ <>(w+apprl-apprr-hthick-thin)/2: change_width fi;
+ lft x$=(w+apprl-apprr-hthick-thin)/2; x$$=x$+hthick;
+enddef;
+
+def center_stem(text t)=
+ pickup circle.nib;
+ if 0.5(w+apprl-apprr)<>good.x(0.5(w+apprl-apprr)): change_width; fi
+ for $=t: x[$]=0.5(w+apprl-apprr); endfor
+enddef;
+
+def compute_spread(expr normal_spread,big_spread)=
+ spread#:=math_spread[normal_spread,big_spread];
+ spread:=2ceiling(spread#*hppp/2)+eps
+enddef;
+
+def v_center(expr h_sharp) =
+ .5h_sharp+math_axis#, .5h_sharp-math_axis#
+enddef;
+
+boolean straight_bowl;
+straight_bowl=true;
+bowl_max_height:=infinity;
+
+def bbbowl(expr top_point,mid_point,bot_point,thickness) expr p=
+ x.bowl.mid:=x.bowl.top:=x.bowl.bot:=xpart mid_point
+ if xpart mid_point<xpart top_point: + else: - fi thickness;
+ y.bowl.mid:=ypart mid_point;
+ y.bowl.top:=ypart(p intersectionpoint
+ ((x.bowl.mid,ypart top_point)..(x.bowl.mid,y.bowl.mid)));
+ y.bowl.bot:=ypart(p intersectionpoint
+ ((x.bowl.mid,ypart bot_point)..(x.bowl.mid,y.bowl.mid)));
+ bowl_path:=if straight_bowl: z.bowl.top..z.bowl.bot
+ else: begingroup interim superness:=superbowl;
+ if xpart mid_point<xpart top_point:
+ if x.bowl.top<xpart top_point: top_point left_to_down
+ else: z.bowl.top.. fi
+ else: if x.bowl.top>xpart top_point: top_point right_to_down
+ else: z.bowl.top.. fi fi
+ if ypart(top_point-bot_point)>bowl_max_height:
+ (x.bowl.mid,ypart top_point-0.5bowl_max_height)
+ ..(x.bowl.mid,ypart bot_point+0.5bowl_max_height)
+ else: z.bowl.mid fi
+ if xpart mid_point<xpart bot_point:
+ if x.bowl.bot<xpart bot_point: down_to_right bot_point
+ else: ..z.bowl.bot fi
+ else: if x.bowl.bot>xpart bot_point: down_to_left bot_point
+ else: ..z.bowl.bot fi fi
+ endgroup
+ fi;
+ draw bowl_path
+enddef;
+
+def hbbowl(expr top_point,mid_point,bot_point,thickness) expr p=
+ x.bowl.mid:=x.bowl.top:=x.bowl.bot:=xpart mid_point
+ if xpart mid_point<xpart top_point: + else: - fi thickness;
+ y.bowl.mid:=ypart mid_point; y.bowl.bot:=ypart bot_point;
+ y.bowl.top:=ypart(p intersectionpoint
+ ((x.bowl.mid,ypart top_point)..(x.bowl.mid,y.bowl.mid)));
+ bowl_path:=if straight_bowl: z.bowl.top..z.bowl.bot
+ else: begingroup interim superness:=superbowl;
+ if xpart mid_point<xpart top_point:
+ if x.bowl.top<xpart top_point: top_point left_to_down
+ else: z.bowl.top.. fi
+ else: if x.bowl.top>xpart top_point: top_point right_to_down
+ else: z.bowl.top.. fi fi
+ if abs(ypart(top_point-mid_point))>0.5bowl_max_height:
+
+ (x.bowl.mid,ypart top_point
+ if ypart(top_point-mid_point)>0: - else: + fi
+ 0.5bowl_max_height)..
+ fi
+ z.bowl.mid if y.bowl.mid<>y.bowl.bot: ..z.bowl.bot fi
+ endgroup
+ fi;
+ draw bowl_path
+enddef;
+
+% some drawings are repeated, so they become macros.
+% Also, it makes it simpler to change.
+
+def dot(suffix $,$$)=
+ if square_dots: pickup square.nib;
+ draw (x$,y$)--(x$$,y$)--(x$$,y$$)--(x$,y$$)--cycle;
+ labels($,$$);
+ else: pickup circle.nib;
+ y$a=y$c=0.5[y$,y$$]; x$b=x$d=0.5[x$,x$$];
+ x$a=x$; x$c=x$$; y$b=y$$; y$d=y$;
+ draw z$a up_to_right z$b right_to_down z$c
+ down_to_left z$d left_to_up z$a;
+ labels($,$$,$a,$b,$c,$d); fi
+enddef;
+
+% the next program draws `acute', `grave' and related shapes
+% when square_dots=false. Well, it is quite tricky and some
+% people would think that this program leads to wrong results.
+% I am not sure that it does not but I've designed it so.
+
+vardef long_dot(suffix $,$$)=
+ pickup circle.nib; save a,r,u_; pair u_;
+ r$=max(0.5(0.5dot_size-thin),0);
+ r$$=max(0.5(dot_size-thin),0);
+ a=(r$$-r$)/abs(z$$-z$);
+ u_=unitvector(z$$-z$);
+ z$$b-z$$=r$$*u_; z$b-z$=-r$*u_;% edges
+ z$-z$a=r$*a*u_; z$$-z$$a=r$$*a*u_;% midpoints
+ ortho_penpos$a(0.5thick*(1+-+a),u_);
+ ortho_penpos$$a(thick*(1+-+a),u_);
+ ortho_penpos$$(thick,u_);
+ draw z$b{(z$$r-z$$l)}...z$a.r--z$$a.r...z$$r{z$$-z$}...
+ (superness[z$$,z$$b]+superness[z$$,z$$r]-z$$){z$$b-z$$r}
+ ...z$$b{-(z$$r-z$$l)}...
+ (superness[z$$,z$$b]+superness[z$$,z$$l]-z$$){z$$l-z$$b}
+ ...z$$.l{z$-z$$}...z$$a.l--z$a.l...cycle;
+ penlabels($a,$$,$$a); labels($,$b,$$b);
+enddef;
+
+% see, for instance, "bbcomma" in bbpunct.mf to learn which
+% coordinates should be known before calling the next routine.
+
+vardef complete_comma@#=
+ save tmp_path; path tmp_path;
+ if y4@#>y1@#: top y4@#-y3@#=min(dot_size/2,y4@#-y1@#);
+ else: y3@#-bot y4@#=min(dot_size/2,y1@#-y4@#); fi
+ y2@#=y1@#; x2@#=0[x1@#,x5@#];
+ tmp_path=z1@#..z2@# right_to_up z3@#;
+ hbbowl(z1@#,1/3[z3@#,(x3@#,y1@#)],z3@#,abs(x5@#-x3@#)) tmp_path;
+ draw tmp_path; square_end1@#((x5@#-x3@#,0));
+ if square_dots: x4@#=x3@#; y4@#=y5@#;
+ draw z3@#..z4@#; draw z5@#..z.bowl.bot;
+ pickup square.nib; draw z4@#..z5@#;
+ else: x4@#=0.5[x3@#,x5@#]; y5@#=y3@#;
+ draw z3@# up_to_left z4@# right_to_down z5@#;
+ fi
+ labels(1@#,2@#,3@#,4@#,5@#)
+enddef;
+
+def complete_AV(expr $,lftbound,rtbound)=
+ if $<0: x1l=rtbound; x3r=lftbound; y1l=y5l=y3r=h; y2l=y4r=-d;
+ else: x1l=lftbound; x3r=rtbound; y1l=y5l=y3r=-d; y2l=y4r=h; fi
+ numeric a,x,y;
+ a=(abs(x3r-x1l)-2(h+d)*slant)/(2h+2d);
+ y=(thick+thin)/(2h+2d);
+ x=(thick+thin)*(-a*y+sqrt(1+(a**2)-(y**2)))/(1-(y**2));
+ x4r-x2l=x3r-x5l=if $<0: - fi x; x2l-x1l=x5l-x2l; z6l=z2l;
+ numeric x,y;
+ x=if $<0: - fi diag_width(thin,z3r-z4r);
+ y=if $<0: - fi diag_width(thin,z1l-z2l);
+ penpos1(y,0); penpos2(y,0); penpos3(x,0);
+ penpos4(x,0); penpos5(x,0); penpos6(x,0);
+ y3a-y3=if $<0:- fi thin;
+ z3a-z3=z5a-z5=z4-z4a=z6-z6a=whatever*(z4-z3);
+ z2a=whatever[z1r,z2r]; z2a=whatever[z5,z6];
+ fill z1r--z2a--z6--z2l--z1l--cycle;
+ penstroke z3e..z4e; penstroke z5e..z6e;
+ fill z3--z5--z5a--z3a--cycle;
+ fill z4--z6--z6a--z4a--cycle;
+ penlabels(1,2,3,4,5,6); labels(2a,3a,4a,5a,6a)
+enddef;
+
+% def adjust_O(expr @,$,$$,$$$,$$$$)=
+% pickup circle.nib;
+% rt x[@]=w-apprr+$$; lft x[@+2]=apprl-$;
+% top y[@+1]=h+$$$; bot y[@+3]=-d-$$$$;
+% y[@]=y[@+2]=0.5[y[@+1],y[@+3]]; x[@+1]=x[@+3]=0.5[x[@],x[@+2]];
+% x[@+4]-x[@+2]=x[@]-x[@+6]=hThick;
+% tmp_path:=superellipse(z[@],z[@+1],z[@+2],z[@+3],superness);
+% z[@+4]=tmp_path intersectionpoint ((x[@+4],y[@+3])..(x[@+4],y[@]));
+% z[@+5]=tmp_path intersectionpoint ((x[@+4],y[@+1])..(x[@+4],y[@]));
+% z[@+6]=tmp_path intersectionpoint ((x[@+6],y[@+3])..(x[@+6],y[@]));
+% z[@+7]=tmp_path intersectionpoint ((x[@+6],y[@+1])..(x[@+6],y[@]));
+% enddef;
+
+vardef bbcircle@#(expr left_side,right_side,top_side,bot_side)=
+ rt x@#a=right_side; lft x@#c=left_side;
+ top y@#b=top_side; bot y@#d=bot_side;
+ y@#a=y@#c=0.5[y@#b,y@#d]; x@#b=x@#d=0.5[x@#a,x@#c];
+ last_path:=superellipse(z@#a,z@#b,z@#c,z@#d,superness);
+ labels(@#a,@#b,@#c,@#d)
+enddef;
+
+% def complete_O(expr $,$$,$$$,$$$$)=
+% pickup circle.nib;
+% rt x1=w-apprr+$$; lft x3=apprl-$; top y2=h+$$$; bot y4=-d-$$$$;
+% y1=y3=0.5[y2,y4]; x2=x4=0.5[x1,x3];
+% tmp_path:=superellipse(z1,z2,z3,z4,superness);
+% draw tmp_path;
+% bbbowl(x3,y2,y4,hThick) tmp_path;
+% bbbowl(x1,y2,y4,hThick) tmp_path;
+% labels(1,2,3,4);
+% enddef;
+
+def complete_X(expr shift)=
+ pickup circle.nib;
+ numeric a;
+ x1l=apprl-shift; x4r=w-apprr+shift; y1l=h; y4r=-d;
+ adjust_slanted_bar(1l,4r,2r,3l)(thick+thin,1);
+ a=diag_width(thin,z1l-z3l);
+ penpos1(a,0); penpos2(a,0); penpos3(a,0); penpos4(a,0);
+ z5l=(apprl,-d); z8r=(w-apprr,h);
+ adjust_slanted_bar(5l,8r,5r,8l)(thin,-1);
+ forsuffixes $=l,r:
+ z6$=whatever[z5$,z8$]; z6$=whatever[z1,z3];
+ z7$=whatever[z5$,z8$]; z7$=whatever[z2,z4];
+ endfor
+ y1-y1a=thin; z1a=whatever[z1,z3]; z1-z1a=z2-z2a=z3a-z3=z4a-z4;
+ penstroke z1e..z3e; penstroke z2e..z4e; penstroke z5e..z6e;
+ penstroke z7e..z8e; fill z1a--z2a--z2--z1--cycle;
+ fill z3--z4--z4a--z3a--cycle; labels(1a,2a,3a,4a);
+ penlabels(1,2,3,4,5,6,7,8);
+enddef;
+
+% macros for lowercase.
+
+boolean g_bar, j_bar;
+g_bar=false; j_bar=false;
+
+% $ and $$ : proportionnal depth of the curve along the straight bar.
+
+def complete_right_lower(expr $,$$)=
+ if g_bar or j_bar: complete_gj_bar(-1);
+ else: pickup circle.nib; lft x1=apprl; x3=x1;
+ bot y1=-d; y2=y1; top y3=h; y4=y3; x2-x1=x4-x3=hthick;
+ pickup square.nib; draw z1--z2--z4--z3--cycle;
+ fi
+ pickup circle.nib;
+ rt x7=w-apprr+ho; terminate_lower($,$$);
+enddef;
+
+% $ and $$ : proportionnal depth of the curve along the straight bar.
+
+def complete_left_lower(expr $,$$)=
+ if g_bar or j_bar: complete_gj_bar(1);
+ else: pickup circle.nib; rt x1=w-apprr; x3=x1;
+ bot y1=-d; y2=y1; top y3=h; y4=y3; x1-x2=x3-x4=hthick;
+ pickup square.nib; draw z1--z2--z4--z3--cycle; fi
+ pickup circle.nib;
+ lft x7=apprl-ho; terminate_lower($,$$);
+enddef;
+
+def terminate_lower(expr $,$$)=
+ pickup circle.nib;
+ x5=x9=x2; y7=0.5[y6,y8]; x6=x8=0.5[x7,x1];
+ if ab_down_factor>0: bot y6=-oo;
+ y5=ab_down_factor[top 0,bot x_height];
+ else: bot y6=bot y5=0; fi
+ if ab_up_factor>0: top y8=x_height+oo;
+ y9=ab_up_factor[bot x_height,top 0];
+ else: top y8=top y9=x_height; fi
+ tmp_path:=z5 if ab_down_factor>0: down_to_left else:.. fi
+ z6 left_to_up z7 up_to_right z8
+ if ab_up_factor>0: right_to_down else:.. fi z9;
+ bbbowl(z8,z7,z6,hThick) tmp_path; draw tmp_path;
+ labels(1,2,3,4,5,6,7,8,9);
+enddef;
+
+% $ : proportionnal depth of the curve along the straight bar.
+
+def complete_n=
+ pickup circle.nib; lft x1=apprl; x3=x1;
+ bot y1=bot y2=0; top y3=top y4=h; x2-x1=x4-x3=hthick;
+ x5=x2; x6=0.5[x7,x5]; rt x7=rt x8=w-apprr;
+ if hmn_factor>0: y5=hmn_factor[bot x_height, y1];
+ top y6=x_height+oo;
+ else: top y5=top y6=x_height; fi
+ y7=0.7[y1,y6]; x8-x9=hthick;
+ if g_bar or j_bar: y8=0; else: bot y8=bot y9=-d; fi
+ tmp_path:=z5 if hmn_factor>0: up_to_right else:.. fi
+ z6 right_to_down z7..
+ if g_bar: g_curve8(9,x9,true);
+ elseif j_bar: j_curve8(9,x9,true);
+ else: z8; fi
+ draw tmp_path; hbbowl(z6,z7,z8,hthick) tmp_path;
+ pickup square.nib; draw z1--z2--z4--z3--cycle;
+ if (not j_bar) and (not g_bar): draw z8..z9; fi
+ labels(1,2,3,4,5,6,7,8,9,10); g_bar:=false; j_bar:=false;
+enddef;
+
+def complete_u(expr $)=
+ if g_bar or j_bar: complete_gj_bar(1);
+ else:
+ pickup circle.nib; rt x1=w-apprr; x3=x1;
+ bot y1=-d; y2=y1; top y3=h; y4=y3; x1-x2=x3-x4=hthick;
+ pickup square.nib; draw z1--z2--z4--z3--cycle; fi
+ pickup circle.nib;
+ x5=x2; x6=0.5[x7,0.5[x2,x1]]; lft x7=lft x8=apprl;
+ top y8=x_height; y7=0.7[y8,y6];
+ if uy_factor>0: y5=uy_factor[top 0,y8]; bot y6=-oo;
+ else: bot y5=bot y6=0; fi
+ tmp_path:=z5 if uy_factor>0: down_to_right else:.. fi
+ z6 left_to_up z7..z8;
+ draw tmp_path; hbbowl(z6,z7,z8,hthick) tmp_path;
+ pickup square.nib;
+ draw z8..z.bowl.bot; labels(1,2,3,4,5,6,7,8,9,10);
+enddef;
+
+def complete_gj_bar(expr $)=
+ pickup circle.nib;
+ top y3=top y4=h; y1=0;
+ if $>0: rt x1=rt x3=w-apprr; x3-x4=hthick;
+ else: lft x1=lft x3=apprl; x4-x3=hthick; fi
+ draw z3..if g_bar: g_curve1(2,x4,true); g_bar:=false;
+ else: j_curve1(2,x4,true); j_bar:=false; fi
+ draw z2..z4; pickup square.nib; draw z3..z4;
+enddef;
+
+vardef g_curve@#(suffix $)(expr $$,squared_end)=
+ save p_; path p_;
+ bot y@#.a=-d; y@#.b=0.5[bot y@#,y@#.a];
+ if $$<x@#: lft x@#.b=apprl+hround 0.15u;
+ else: rt x@#.b=w-apprr-hround 0.15u; fi
+ p_=elliptic_arc(@#,@#.a,@#.b);
+ hbbowl(z@#.a,z@#,z@#,abs($$-x@#)) p_;
+ z$=z.bowl.bot;
+ if squared_end: square_end@#.b(z@#.b-z@#.b'); fi
+ labels(@#.a,@#.b,@#.b');
+ p_
+enddef;
+
+vardef j_curve@#(suffix $)(expr $$,squared_end)=
+ save p_; path p_;
+ bot y@#.a=bot y@#.b=-d;
+ $$-x@#.b=if x@#<$$: - fi hround 2u;
+ x@#.a=0.25[x@#.b,$$];
+ p_=z@# down_to_right z@#.a..z@#.b;
+ hbbowl(z@#.a,z@#,z@#,abs($$-x@#)) p_;
+ z$=z.bowl.bot;
+ if squared_end: square_end@#.b(z@#.b-z@#.a); fi
+ labels(@#.a,@#.b);
+ p_
+enddef;
+
+def complete_f_stroke(suffix $,$$)(expr top_width,squared_end)=
+ pickup circle.nib;
+ top y$.a=top y$.b=h; y$=x_height;
+ x$.a-x$$=top_width; x$.b=0.25[x$.a,x$$];
+ tmp_path:=z$.a..z$.b left_to_down z$;
+ hbbowl(z$.b,z$,z$,x$$-x$) tmp_path;
+ if not variant_f:
+ bot y$.c=bot y$$=0; x$.c=x$; tmpp_path:=z$$..z.bowl.bot;
+ else: bot y$$.a=bot y$$.b=-d; y$$=0;
+ x$-x$$.a=hround 2u; x$$.b=0.25[x$$.a,x$];
+ tmpp_path:=z$$.a..z$$.b right_to_up z$$..z.bowl.bot;
+ hbbowl(z$$.b,z$$,z$$,x$$-x$) tmpp_path; z$.c=z.bowl.bot; fi
+ draw tmp_path..z$.c; draw tmpp_path;
+ if not variant_f: pickup square.nib;
+ draw z$.c..z$$; labels($,$.a,$.b,$.c,$$,$$.a);
+ else: square_end$$.a(left);
+ labels($,$.a,$.b,$.c,$$,$$.a,$$.b); fi
+ if squared_end: square_end$.a(right); fi
+enddef;
+
+%
+% accents
+%
+
+if unknown tmp_h: tmp_h:=x_height; fi
+
+def complete_grave(expr $,$$)=
+ if square_dots:
+ x0=(w+$-$$)/2+0.25u; x2l=hround $-0.5;
+ y0=y3r=vround 1/3[tmp_h,h]; y2l=y4r=h;
+ adjust_slanted_bar(2l,0,0',1l)(0.5(thick+thin),1);
+ a:=diag_width(thin,z0'-z0);
+ penpos1(a,0); penpos2(a,0); penpos3(a,0); penpos4(a,0);
+ x3-x0=x0-x1; x4-x0'=x0'-x2;
+ y1a-y1=thin; z1a=whatever[z1,z2];
+ z1a-z1=z3a-z3=z2-z2a=z4-z4a;
+ penstroke z1e..z2e; penstroke z3e..z4e;
+ fill z1a--z3a--z3--z1--cycle;
+ fill z2--z4--z4a--z2a--cycle;
+ labels(1a,2a,3a,4a); penlabels(0,0',1,2,3,4);
+ else:
+ pickup circle.nib;
+ x2=$+dot_size/2+hround((w-$-$$)/8);
+ x1=w-$$-dot_size/4-hround((w-$-$$)/5);
+ y1=vround 1/5[tmp_h,h]+dot_size/4;
+ y2=h-dot_size/2; long_dot(1,2);
+ fi
+enddef;
+
+def complete_acute(expr $,$$)=
+ if square_dots:
+ x0=(w+$-$$)/2-0.25u; x4r=w-hround $$+0.5;
+ y0=y1l=vround 1/3[tmp_h,h]; y2l=y4r=h;
+ adjust_slanted_bar(4r,0,0',3r)(0.5(thick+thin),-1);
+ a:=diag_width(thin,z0'-z0);
+ penpos1(a,0); penpos2(a,0); penpos3(a,0); penpos4(a,0);
+ x3-x0=x0-x1; x4-x0'=x0'-x2;
+ y1a-y1=thin; z1a=whatever[z1,z2];
+ z1a-z1=z3a-z3=z2-z2a=z4-z4a;
+ penstroke z1e..z2e; penstroke z3e..z4e;
+ fill z1a--z3a--z3--z1--cycle;
+ fill z2--z4--z4a--z2a--cycle;
+ labels(1a,2a,3a,4a); penlabels(0,0',1,2,3,4);
+ else:
+ pickup circle.nib;
+ x2=w-$$-dot_size/2-hround((w-$-$$)/8);
+ x1=$+dot_size/4+hround((w-$-$$)/5);
+ y1=vround 1/5[tmp_h,h]+dot_size/4;
+ y2=h-dot_size/2; long_dot(1,2);
+ fi
+enddef;
+
+def complete_circumflex(expr $,$$,$$$)=
+ if square_dots:
+ begingroup save d; d=-vround 1/3[tmp_h,h];
+ complete_AV($$$,$,w-$$);
+ endgroup;
+ else:
+ pickup circle.nib;
+ if $$$>0: top y1=top y2=y1r=y2r=h; y1l=y2l=y1r-thin;
+ y3r=y4r=y4a=y6a=y6r=y7r=vround 1/5[tmp_h,h];
+ y5=max(top y1r-dot_size,0.5[y1r,y3r]);
+ else: bot y1=bot y2=y1r=y2r=vround 1/5[tmp_h,h];
+ y1l=y2l=y1r+thin; y3r=y4r=y4a=y6a=y6r=y7r=h;
+ y5=min(bot y1r+dot_size,0.5[y1r,y3r]);
+ fi
+ x2-x1=hthick; x7r=$; x3r=w-$$; x1-x7r=x3r-x2;
+ adjust_slanted_bar(7r,1,7,1a)(0.5thin,-$$$);
+ adjust_slanted_bar(3r,2,3,2a)(0.5thin,$$$);
+ z1r=whatever[z7r,z1a]; z2r=whatever[z3r,z2a];
+ z6=z7; z3=z4; x5=0.5[x1,x2];
+ x4-x4r=diag_width(0.5thin,z5-z4); x6r-x6=diag_width(0.5thin,z5-z6);
+ z5r-z4r=whatever*(z5-z4); z5r-z6r=whatever*(z5-z6);
+ z5l-(x4+(x4-x4r),y4)=whatever*(z5-z4);
+ z5l-(x6-(x6r-x6),y6)=whatever*(z5-z6);
+ z1r-z7r=whatever*(z1-z7); z2r-z3r=whatever*(z2-z3);
+ z1l-(x7+(x7-x7r),y7)=whatever*(z1-z7);
+ z2l-(x3-(x3r-x3),y3)=whatever*(z2-z3);
+ z1l-z7l=whatever*(z1-z7); z2l-z3l=whatever*(z2-z3);
+ z7l-z5l=whatever*(z7-z5); z3l-z5l=whatever*(z3-z5);
+ z6l=z7l; z4l=z3l;
+ penstroke z1e--z2e--z3e--z4e--z5e--z6e--z7e--cycle;
+ penlabels(1,2,3,4,5,6,7); labels(1a,2a);
+ fi
+enddef;
+
+def complete_hat(expr $,$$)=complete_circumflex($,$$,1); enddef;
+
+def complete_hacheck(expr $,$$)=complete_circumflex($,$$,-1); enddef;
+
+def complete_tilde(expr $,$$)=
+ if square_dots:
+ x1r=$; x8r=w-$$;
+ x2r=0.25[x1r,x8r]; x2r-x1r=x8r-x7r; y8r=h; y8r-y7r=y2r-y1r;
+ y1r=y7r+o=min(vround 2/3[h,tmp_h],h-vround 1.2(thick+thin));
+ adjust_slanted_bar(2r,7r,5r,4r)(thick+thin,-1);
+ numeric a,b;
+ a=diag_width(thin,z2r-z4r); b=diag_width(thin,z2r-z1r);
+ penpos4(a,0); penpos5(a,180); penpos1(b,180); penpos8(b,0);
+ z2l-z1l=whatever*(z2r-z1r); z2l-z4l=whatever*(z2r-z4r);
+ z7l-z5l=whatever*(z7r-z5r); z7l-z8l=whatever*(z7r-z8r);
+ forsuffixes @=r,l:
+ z3@-z4@=whatever*(z2r-z4r); z3@-z8=whatever*(z7r-z8r);
+ z6@-z5@=whatever*(z7r-z5r); z6@-z1=whatever*(z2r-z1r);
+ endfor
+ penstroke z1e--z2e--z3e; penstroke z6e--z7e--z8e;
+ penlabels(1,2,3,4,5,6,7,8);
+ else: pickup circle.nib;
+ bot y1=bot y6l+o=vround 1/3[tmp_h,h];
+ lft x1=$; rt x7=w-$$; top y7=top y2r-o=h;
+ y6r-y6l=y2r-y2l=vround 0.5[thin,dot_size-thin];
+ z4=0.5[z1,z7]; slope:=2(y7-y1)/(x1-x7); numeric a;
+ a=(sind angle((-1,-slope)slanted slant))[dot_size-thin,thick];
+ ortho_penpos4(a,(-1,-slope));
+ forsuffixes @=r,l:
+ hellipse_set(1,2@,3@,4@); hellipse_set(7,6@,5@,4@);
+ draw z1 up_to_right z2@...z3@---z5@
+ ...z6@ right_to_up z7;
+ endfor
+ square_end1(down); square_end7(up);
+ penlabels(1,2,3,4,5,6,7);
+ fi
+enddef;
+
+def complete_dot(expr $,$$)=
+ pickup circle.nib; center_bar(1,1');
+ top y1'=h; bot y1=h-dot_size; dot(1,1');
+enddef;
+
+def complete_umlaut(expr $,$$)=
+ pickup circle.nib; x1'-x1=x2'-x2=hthick;
+ lft x1-$=w-$$-rt x2'=hround 0.5(w-$-$$-7u);
+ top y1'=top y2'=h; bot y1=bot y2=h-dot_size;
+ dot(1,1'); dot(2,2');
+enddef;
+
+def complete_long_umlaut(expr $,$$)=
+ if square_dots:
+ y0=vround 1/3[tmp_h,h]; y8r=h;
+ x0=0.5[$,w-$$]; x8r=w-$$;
+ adjust_slanted_bar(0,8r,6r,0')
+ (max(thick+thin+0.5u,2u),-1);
+ a:=diag_width(1,z0'-z0);
+ forsuffixes @#=1,2,3,4,5,6,7,8: penpos@#(a*thin,0); endfor
+ z2-z1=z4-z3=z6-z5=z8-z7=(a*thick,0);
+ z8r-z0'=z0'-z3l;z6r-z0=z0-z1l; y1a-y1=thin;
+ z1a-z1=z2a-z2=z3-z3a=z4-z4a=z5a-z5=z6a-z6
+ =z7-z7a=z8-z8a=whatever*(z3-z1);
+ penstroke z1e..z3e; penstroke z2e..z4e;
+ penstroke z5e..z7e; penstroke z6e..z8e;
+ for i=1 upto 4:
+ fill z[2i-1]--z[2i]--z[2i]a---z[2i-1]a--cycle;
+ endfor
+ penlabels(0,0',1,2,3,4,5,6,7,8); labels(1a,2a,3a,4a,5a,6a,7a,8a);
+ else:
+ pickup circle.nib;
+ y1=y3=vround 1/5[tmp_h,h]+0.25dot_size;
+ y2=y4=h-0.5dot_size+o;
+ x1-x3=x2-x4=hround(max(dot_size+0.5u,3u));
+ 0.5[x1,x3]=0.5[$,w-$$];
+ x2=w-$$-max(0.5dot_size,u);
+ long_dot(1,2); long_dot(3,4);
+ fi
+enddef;
+
+def complete_circ(expr $,$$)=
+ pickup circle.nib;
+ numeric a,b; b=vround(1/3[tmp_h,h]);
+ a=round max(hThick+thin,h+o-b);
+ top y2=b+a+eps; bot y4=b-eps; y1=y3=0.5[y4,y2];
+ lft x3-$=w-$$-rt x1=hround 0.5(w-$-$$-a);
+ x2=x4=0.5[x1,x3];
+ draw superellipse(z1,z2,z3,z4,superness);
+ labels(1,2,3,4,0);
+enddef;
+
+def complete_breve(expr $,$$)=
+ pickup circle.nib; top y1=top y3=h;
+ lft x1-$=w-$$-rt x3=hround 0.5(w-$-$$-6u);
+ bot y2=vround 1/3[tmp_h,h]; x2=0.5[x1,x3];
+ draw z1 down_to_right z2 right_to_up z3;
+ square_end1(up); square_end3(up);
+ labels(1,2,3);
+enddef;
+
+def complete_cedilla(expr $,$$)=
+ pickup circle.nib;
+ x1=x2=x4=good.x $; x3-x1=hThick; x1-x5=hround 2u;
+ y1=$$; bot y4=bot y5=-desc_depth; top y2=-vround max(o,d/6);
+ y3=0.5[y4,y2]; draw z2 right_to_down z3 down_to_left z4..z5;
+ draw z1..z4; square_end5(left);
+ labels(1,2,3,4,5);
+enddef;
+
+def complete_ogonek(expr $,$$)=
+ pickup circle.nib;
+ x1=x6=good.x $; x5-x1=x1-x2=hthick; x2=x3;
+ y1=$$; bot y4=bot y6=-desc_depth-oo;
+ y5=good.y 1/3[y4,y1]; y1-y2=y5-y6;
+ y3=(superness**2)[y4,y2];
+ x4=(superness**2)[x6,x3];
+ tmp_path:=z1{z2-z1}...z3 down_to_right z4{right}...z5{z5-z6};
+ z7=tmp_path intersectionpoint ((x1,y3)..(x1,y4));
+ draw tmp_path; draw z1..z7; square_end5(z5-z6);
+ labels(1,2,3,4,5,6,7);
+enddef;
+
+% `iff' construction
+
+let semi_ =;; let colon_ = :; let endchar_ = endchar;
+def iff expr b = if b:let next_=use_it else:let next_=lose_it fi; next_ enddef;
+def use_it = let : = restore_colon; enddef;
+def restore_colon = let : = colon_; enddef;
+def lose_it = let endchar=fi;
+let ;=fix_ semi_ if false enddef;
+def fix_=let ;=semi_; let endchar=endchar_;
+enddef;
+def always_iff = let : = endgroup; killboolean enddef;
+def killboolean text t = use_it enddef;
+
+% proofing
+
+def horizontal_rules_list=
+ -body_depth,-desc_depth,x_height,cap_height,asc_height,body_height
+enddef;
+
+def makebox(text rule) =
+ for y=-d.o_,0,h.o_:
+ rule((-xoffset,y),(w-xoffset,y)); endfor
+ for y=horizontal_rules_list:
+ rule((apprl-xoffset,y),(w-apprr-xoffset,y)); endfor
+ for x=0,apprl,w-apprr,w:
+ rule((x-xoffset,-d.o_),(x-xoffset,h.o_)); endfor
+ for x=apprl+u step u until w-apprr-1.5:
+ rule((x-xoffset,-d.o_),(x-xoffset,h.o_)); endfor
+ if charic<>0:
+ rule((w-xoffset+charic*hppp,h.o_),
+ (w-xoffset+charic*hppp,.5h.o_)); fi
+enddef;
+
+def accents_proofing=
+ for $=0 upto 19:
+ makelabel("",(0.5[apprl,w-apprr],0.5x_height)
+ +(4u*cosd($*360/20),0.5x_height*sind($*360/20)));
+ endfor
+enddef;
+
+def diacritics_proofing=
+ if proofing>0:extra_endchar:=extra_endchar&"accents_proofing;"; fi
+enddef;
+
+def standard_proofing=
+ if proofing>0:extra_endchar:=normal_extra_endchar; fi
+enddef;
diff --git a/fonts/mbboard/source/mbbcr10.mf b/fonts/mbboard/source/mbbcr10.mf
new file mode 100644
index 0000000000..e020d610cc
--- /dev/null
+++ b/fonts/mbboard/source/mbbcr10.mf
@@ -0,0 +1,20 @@
+% blackboard typefaces by Anthony Phan.
+% file: mbbcr10.mf (parameters' file for 10 points Cork roman fonts)
+% last modification: 01.01.2000.
+
+if unknown mbbbase: input mbbbase fi
+
+font_identifier:="mbbcr"; font_size 10pt#;
+
+slant:=0;
+square_dots:=true;
+straight_bowl:=true;
+math_fitting:=false;
+variant_a:=false; variant_f:=false;
+variant_g:=false; variant_y:=false;
+old_digits:=false; square_hebrew:=true;
+ab_up_factor:=0; ab_down_factor:=0;
+hmn_factor:=0; uy_factor:=0;
+
+input mbblight;
+input mbbcrkdr;
diff --git a/fonts/mbboard/source/mbbcrkdr.mf b/fonts/mbboard/source/mbbcrkdr.mf
new file mode 100644
index 0000000000..8e9cfb2043
--- /dev/null
+++ b/fonts/mbboard/source/mbbcrkdr.mf
@@ -0,0 +1,167 @@
+% blackboard typefaces by Anthony Phan.
+% file: mbbcrkdr.mf (Cork driver file)
+% last modification: 25.10.2001.
+
+mode_setup;font_setup;
+font_coding_scheme:="TeX text";% Cork encoding
+
+numeric cap_accent_height#,accent_height#,
+cap_accent_height_bis#,accent_height_bis#,
+cork_code[],cork_wd[],cork_ht[],cork_dp[],cork_ic[],cork_h[];
+picture cork_picture[];
+
+cap_accent_height#=min(1.25body_height#-cap_height#,x_height#);
+accent_height#=min(asc_height#-x_height#,x_height#);
+cap_accent_height_bis#=min(cap_height#,
+ 10/7x_height#+0.5dot_size#)-x_height#;
+accent_height_bis#=min(asc_height#,
+ 10/7x_height#+0.5dot_size#)-x_height#;
+accent_height_ter#=min(asc_height#,
+ 10/7x_height# if not low_umlaut: +0.5dot_size# fi)-x_height#;
+
+numeric slash_width;
+slash_width=hround(3.8u+hthick+thin);
+
+def cork_extra_endchar=
+ if known cork_code[charcode]: cork_wd[charcode]:=charwd;
+ cork_ht[charcode]:=charht; cork_dp[charcode]:=chardp;
+ cork_ic[charcode]:=charic; cork_h[charcode]:=h;
+ cork_picture[charcode]:=currentpicture;
+ fi
+enddef;
+
+def correct_width_by(expr $,$$)=charwd:=charwd+$+$$;
+ w:=hround(charwd*hppp); interim xoffset:=hround($*hppp);
+ currentpicture:=currentpicture shifted (xoffset,0);
+enddef;
+
+def begincorkchar(expr letter,accent,code,extra_height,extra_depth)=
+ numeric a,rshift,lshift; a=byte letter;
+ beginchar(code,cork_wd[a],cork_ht[a]+extra_height,
+ cork_dp[a]+extra_depth);
+ "The letter "& if string letter: letter else: "i" fi &" with "& accent;
+ currentpicture:=cork_picture[a];
+ tmp_h:=cork_h[a];
+ rshift-apprr=lshift-apprl
+ =hround 0.5(w-apprr-apprl-min(max(w-apprl-apprr,7u),9u));
+ enddef;
+ def endcorkchar=endchar
+enddef;
+
+bbes_zet:=hex"FF";
+bbslash_o:=hex"F8"; bbslash_O:=hex"D8";
+bbae:=hex"E6"; bbAE:=hex"C6";
+bboe:=hex"F7"; bbOE:=hex"D7";
+bbdotless_i:=hex"19"; bbdotless_j:=hex"1A";
+bbcross_d:=hex"F0";
+bbEng:=hex"8D"; bbeng:=hex"AD";
+bbThorn:=hex"DE"; bbthorn:=hex"FE";
+
+cork_code[byte "A"]=1; cork_code[byte "a"]=1;
+cork_code[byte "C"]=1; cork_code[byte "c"]=1;
+cork_code[byte "D"]=1; cork_code[byte "d"]=1;
+cork_code[byte "E"]=1; cork_code[byte "e"]=1;
+cork_code[byte "G"]=1; cork_code[byte "g"]=1;
+cork_code[byte "I"]=1; cork_code[byte "i"]=1;
+cork_code[byte "J"]=1; cork_code[byte "j"]=1;
+cork_code[byte "L"]=1; cork_code[byte "l"]=1;
+cork_code[byte "N"]=1; cork_code[byte "n"]=1;
+cork_code[byte "O"]=1; cork_code[byte "o"]=1;
+cork_code[byte "R"]=1; cork_code[byte "r"]=1;
+cork_code[byte "S"]=1; cork_code[byte "s"]=1;
+cork_code[byte "T"]=1; cork_code[byte "t"]=1;
+cork_code[byte "U"]=1; cork_code[byte "u"]=1;
+cork_code[byte "Y"]=1; cork_code[byte "y"]=1;
+cork_code[byte "Z"]=1; cork_code[byte "z"]=1;
+cork_code[byte bbdotless_i]=1;
+
+% roman encoding
+bblig_ff:=hex"1B"; bblig_fi:=hex"1C"; bblig_fl:=hex"1D"; bblig_ffi:=hex"1E";
+bblig_ffl=hex"1F";
+ligtable "f": "f"=:bblig_ff, "i"=:bblig_fi, "l"=:bblig_fl, "f"=:bblig_ff;
+ligtable bblig_ff: "i"=:bblig_ffi, "l"=:bblig_ffl;
+% bblig_ct=hex"09";
+% bblig_st=hex"0A";
+% ligtable "c": "t"=:bblig_ct;
+% ligtable "s": "t"=:bblig_st;
+
+bbgrave:=hex"00"; bbacute:=hex"01"; bbcircumflex:=hex"02";
+bbtilde:=hex"03"; bbumlaut:=hex"04"; bblong_umlaut:=hex"05";
+bbcirc_accent:=hex"06"; bbhacheck:=hex"07";bbbreve:=hex"08";
+bbmacron:=hex"09"; bbdotaccent:=hex"0A"; bbcedilla:=hex"0B";
+bbogonek:=hex"0C";bbwide_circumflex:=hex"5E"; bbwide_tilde:=hex"7E";
+
+bbnormal_space:=hex"20"; bbunderscore:=hex"5F";
+bbasterisk:=hex"2A"; bbcomma:=hex"2C"; bbperiod:=hex"2E";
+bbcolon:=hex"3A"; bbsemicolon:=hex"3B";
+bbquestion_mark:=hex"3F"; bbexclamation_point:=hex"21";
+bbspanish_shriek:=hex"BD"; bbspanish_query:=hex"BE";
+bbslash:=hex"2F"; bbback_slash:=hex"5C";
+vertical:=hex"7C";
+parenthesis_left:=hex"28"; parenthesis_right:=hex"29";
+bracket_left:=hex"5B"; bracket_right:=hex"5D";
+brace_left:=hex"7B"; brace_right:=hex"7D";
+bbapostrophe:=hex"27"; bbreverse_apostrophe:=hex"60";
+bbopening_quotes:=hex"10"; bbclosing_quotes:=hex"11";
+bbgerman_opening_comma:=hex"0D";
+bbgerman_opening_quotes:=hex"12";
+bbstraight_quotes:=hex"22"; % ASCII location
+bbfso_quotes:=hex"0E"; bbfsc_quotes:=hex"0F";
+bbfdo_quotes:=hex"13"; bbfdc_quotes:=hex"14";
+bbdash:=hex"2D"; bben_dash:=hex"15"; bbem_dash:=hex"16";
+bbcompound_word_mark:=hex"17"; bbhyphenchar:=hex"7F";
+ligtable bbdash: bbdash=:bben_dash;
+ligtable bben_dash: bbdash=:bbem_dash;
+ligtable bbreverse_apostrophe: bbreverse_apostrophe=:bbopening_quotes;
+ligtable bbapostrophe: bbapostrophe=:bbclosing_quotes;
+ligtable bbcomma: bbcomma=:bbgerman_opening_quotes;
+% Next characters are no more treated as ligatures.
+%ligtable bbexclamation_point: bbreverse_apostrophe=:bbspanish_shriek;
+%ligtable bbquestion_mark: bbreverse_apostrophe=:bbspanish_query;
+% Strange, there's nothing to do with french single quotes.
+ligtable "<": "<"=:bbfdo_quotes;
+ligtable ">": ">"=:bbfdc_quotes;
+
+% symbols encoding
+equal_sign:=hex"3D"; plus_sign:=hex"2B";% minus_sign:=hex"";
+inferior_sign:=hex"3C"; superior_sign:=hex"3E";
+hash_sign:=hex"23";% bbhash_mark:=hex"23";
+bbdollar:=hex"24"; bbpercent:=hex"25";
+bbsmall_zero:=hex"18";
+bbeuro:=hex"9F";% I don't want to code any chapter mark.
+ligtable bbpercent:bbsmall_zero kern(-1.5u#-2letter_fit#);
+ligtable bbsmall_zero:bbsmall_zero kern(-1.5u#-2letter_fit#);
+bbampersand:=hex"26"; bbat_sign:=hex"40"; bbpound:=hex"BF";
+
+% let the show begin :
+input mbbaccnt;
+extra_endchar:="cork_extra_endchar";
+input mbbromup;
+extra_endchar:="";
+input mbbcrkup;
+extra_endchar:="cork_extra_endchar";
+input mbbromlo;
+extra_endchar:="";
+input mbbcrklo;
+input mbbromxu;
+input mbbromxl;
+input mbbromlg;
+input mbbdigit;
+input mbbpunct;
+input mbbsymbl;
+
+% parameters for TFM files.
+
+font_slant=slant;
+font_x_height=x_height#;
+font_normal_stretch=3u#;
+font_normal_shrink=2u#;
+font_quad=18u#+4letter_fit#;
+font_extra_space=2u#;
+font_normal_space=6u#+2letter_fit#;
+
+%
+% Needs ligtables...
+%
+
+bye.
diff --git a/fonts/mbboard/source/mbbcrklo.mf b/fonts/mbboard/source/mbbcrklo.mf
new file mode 100644
index 0000000000..94b5b7691b
--- /dev/null
+++ b/fonts/mbboard/source/mbbcrklo.mf
@@ -0,0 +1,312 @@
+% blackboard typefaces by Anthony Phan.
+% file: mbbcrklo.mf (Cork roman lowercase)
+% last modification: 25.10.2001.
+
+% some new instructions (eg. begincorkchar)
+% and new measures (eg. accent_height#)
+% are defined in the driver file `bbcrkdrv.mf'.
+
+use_rule1;
+
+begincorkchar("a","grave",hex"E0",accent_height#,0);
+italcorr cork_ic[a];
+complete_grave(lshift,rshift);
+endcorkchar;
+
+begincorkchar("a","acute",hex"E1",accent_height#,0);
+italcorr cork_ic[a];
+complete_acute(lshift,rshift);
+endcorkchar;
+
+begincorkchar("a","circumflex",hex"E2",accent_height#,0);
+italcorr cork_ic[a];
+complete_hat(lshift,rshift);
+endcorkchar;
+
+begincorkchar("a","tilde",hex"E3",accent_height#,0);
+italcorr cork_ic[a];
+complete_tilde(lshift,rshift);
+endcorkchar;
+
+begincorkchar("a","umlaut",hex"E4",accent_height_ter#,0);
+italcorr cork_ic[a];
+complete_umlaut(lshift,rshift);
+endcorkchar;
+
+begincorkchar("a","circ",hex"E5",accent_height#,0);
+italcorr cork_ic[a];
+complete_circ(lshift,rshift);
+endcorkchar;
+
+begincorkchar("a","breve",hex"A0",accent_height#,0);
+italcorr cork_ic[a];
+complete_breve(lshift,rshift);
+endcorkchar;
+
+begincorkchar("a","ogonek",hex"A1",0,desc_depth#);
+italcorr cork_ic[a];
+pickup circle.nib; rt x0=w-apprr;
+complete_ogonek(x0,0);
+endcorkchar;
+
+begincorkchar("c","acute",hex"A2",accent_height#,0);
+italcorr cork_ic[a];
+complete_acute(lshift,rshift);
+endcorkchar;
+
+begincorkchar("c","hacheck",hex"A3",accent_height#,0);
+italcorr cork_ic[a];
+complete_hacheck(lshift,rshift);
+endcorkchar;
+
+begincorkchar("c","cedilla",hex"E7",0,desc_depth#);
+italcorr cork_ic[a];
+pickup circle.nib; lft x0l=apprl; rt x0r=w-apprr;
+complete_cedilla(0.527[x0l,x0r],-oo);
+endcorkchar;
+
+begincorkchar("d","bar",hex"9E",0,0);
+italcorr cork_ic[a];
+pickup circle.nib;
+y1=y2=y3=y4=good.y 0.5[x_height,h];
+rt x1=w-apprr+hround u; x2=w-apprr; x3=x2-hthick-thin;
+rt x1-lft x4=slash_width; pickup square.nib;
+draw z1..z2; draw z3..z4; labels(1,2,3,4);
+endcorkchar;
+
+begincorkchar("d","hacheck",hex"A4",0,0);
+italcorr cork_ic[a];
+correct_width_by(0,7.5u#-hthick#-thin#);
+pickup circle.nib;
+top y1=x_height; top y4=h; rt x3=w-apprr; x3-x5=hthick;
+lft x1=hround min(apprl+9u,x5-thin); complete_comma;
+endcorkchar;
+
+begincorkchar("e","grave",hex"E8",accent_height#,0);
+italcorr cork_ic[a];
+complete_grave(lshift,rshift);
+endcorkchar;
+
+begincorkchar("e","acute",hex"E9",accent_height#,0);
+italcorr cork_ic[a];
+complete_acute(lshift,rshift);
+endcorkchar;
+
+begincorkchar("e","circumflex",hex"EA",accent_height#,0);
+italcorr cork_ic[a];
+complete_hat(lshift,rshift);
+endcorkchar;
+
+begincorkchar("e","umlaut",hex"EB",accent_height_ter#,0);
+italcorr cork_ic[a];
+complete_umlaut(lshift,rshift);
+endcorkchar;
+
+begincorkchar("e","hacheck",hex"A5",accent_height#,0);
+italcorr cork_ic[a];
+complete_hacheck(lshift,rshift);
+endcorkchar;
+
+begincorkchar("e","ogonek",hex"A6",0,desc_depth#);
+italcorr cork_ic[a];
+complete_ogonek(0.5[apprl,w-apprr],-oo);
+endcorkchar;
+
+begincorkchar(bbdotless_i,"grave",hex"EC",accent_height#,0);
+italcorr cork_ic[a];
+complete_grave(lshift,rshift);
+endcorkchar;
+
+begincorkchar(bbdotless_i,"acute",hex"ED",accent_height#,0);
+italcorr cork_ic[a];
+complete_acute(lshift,rshift);
+endcorkchar;
+
+begincorkchar(bbdotless_i,"circumflex",hex"EE",accent_height#,0);
+italcorr cork_ic[a];
+complete_hat(lshift,rshift);
+endcorkchar;
+
+begincorkchar(bbdotless_i,"umlaut",hex"EF",accent_height_ter#,0);
+italcorr cork_ic[a];
+complete_umlaut(lshift,rshift);
+endcorkchar;
+
+begincorkchar("i","j",hex"BC",0,desc_depth#);
+italcorr cork_ic[a+1];
+currentpicture:=currentpicture+cork_picture[a+1] shifted (w,0);
+correct_width_by(0,cork_wd[a+1]);
+endcorkchar;
+
+begincorkchar("g","breve",hex"A7",accent_height#,0);
+italcorr cork_ic[a];
+complete_breve(lshift,rshift);
+endcorkchar;
+
+begincorkchar("l","acute",hex"A8",accent_height#,0);
+italcorr cork_ic[a];
+complete_acute(lshift,rshift);
+endcorkchar;
+
+begincorkchar("l","hacheck",hex"A9",0,0);
+italcorr cork_ic[a];
+correct_width_by(0,7.5u#+2appr#-charwd);
+pickup circle.nib; top y1=x_height; top y4=h;
+rt x3=w-apprr; x3-x5=hthick;
+lft x1=hround min(apprl+hthick+thin+u,x5-thin);
+complete_comma;
+endcorkchar;
+
+begincorkchar("l","cross",hex"AA",0,0);
+italcorr cork_ic[a];
+correct_width_by(0.5u#,0.5u#);
+x2l=vround(0.5[apprl,w-apprr]-0.5(hthick+thin))+0.5thin;
+x3l-x2l=hthick; x0-x3l=0.5thin; x2l-x1l=x4l-x3l=hround 1.25u+0.5thin;
+y0=x_height; y4l-y0=vround 1.25u;
+a:=thin/cosd angle((z4l-z0)slanted slant);
+forsuffixes $=1,2,3: z$l=whatever[z0,z4l]; endfor
+penpos1(a,-90); penpos2(a,-90); penpos3(a,-90); penpos4(a,-90);
+penstroke z1e..z2e; penstroke z3e..z4e;
+labels(0); penlabels(1,2,3,4);
+endcorkchar;
+
+begincorkchar("n","acute",hex"AB",accent_height#,0);
+italcorr cork_ic[a];
+complete_acute(lshift,rshift);
+endcorkchar;
+
+begincorkchar("n","hacheck",hex"AC",accent_height#,0);
+italcorr cork_ic[a];
+complete_hacheck(lshift,rshift);
+endcorkchar;
+
+begincorkchar("n","tilde",hex"F1",accent_height#,0);
+italcorr cork_ic[a];
+complete_tilde(lshift,rshift);
+endcorkchar;
+
+begincorkchar("o","grave",hex"F2",accent_height#,0);
+italcorr cork_ic[a];
+complete_grave(lshift,rshift);
+endcorkchar;
+
+begincorkchar("o","acute",hex"F3",accent_height#,0);
+italcorr cork_ic[a];
+complete_acute(lshift,rshift);
+endcorkchar;
+
+begincorkchar("o","circumflex",hex"F4",accent_height#,0);
+italcorr cork_ic[a];
+complete_hat(lshift,rshift);
+endcorkchar;
+
+begincorkchar("o","tilde",hex"F5",accent_height#,0);
+italcorr cork_ic[a];
+complete_tilde(lshift,rshift);
+endcorkchar;
+
+begincorkchar("o","umlaut",hex"F6",accent_height_ter#,0);
+italcorr cork_ic[a];
+complete_umlaut(lshift,rshift);
+endcorkchar;
+
+begincorkchar("o","long umlaut",hex"AE",accent_height#,0);
+italcorr cork_ic[a];
+complete_long_umlaut(lshift,rshift);
+endcorkchar;
+
+begincorkchar("r","acute",hex"AF",accent_height#,0);
+italcorr cork_ic[a];
+complete_acute(lshift,rshift);
+endcorkchar;
+
+begincorkchar("r","hacheck",hex"B0",accent_height#,0);
+italcorr cork_ic[a];
+complete_hacheck(lshift,rshift);
+endcorkchar;
+
+begincorkchar("s","acute",hex"B1",accent_height#,0);
+italcorr cork_ic[a];
+complete_acute(lshift,rshift);
+endcorkchar;
+
+begincorkchar("s","hacheck",hex"B2",accent_height#,0);
+italcorr cork_ic[a];
+complete_hacheck(lshift,rshift);
+endcorkchar;
+
+begincorkchar("s","cedilla",hex"B3",0,desc_depth#);
+italcorr cork_ic[a];
+complete_cedilla(0.5[apprl,w-apprr],-oo);
+endcorkchar;
+
+begincorkchar("t","hacheck",hex"B4",
+ asc_height#-cork_ht[byte "t"],0);
+italcorr cork_ic[a];
+correct_width_by(0,1.5u#);
+pickup circle.nib;
+bot y1=x_height+max(thin,vround 0.1x_height);
+top y4=h; rt x3=w-apprr; x3-x5=hthick;
+lft x1=hround min(apprl+hthick+thin+u,x5-thin);
+complete_comma;
+endcorkchar;
+
+begincorkchar("t","cedilla",hex"B5",0,desc_depth#);
+italcorr cork_ic[a];
+complete_cedilla(0.5[apprl,w-apprr],-oo);
+endcorkchar;
+
+begincorkchar("u","grave",hex"F9",accent_height#,0);
+italcorr cork_ic[a];
+complete_grave(lshift,rshift);
+endcorkchar;
+
+begincorkchar("u","acute",hex"FA",accent_height#,0);
+italcorr cork_ic[a];
+complete_acute(lshift,rshift);
+endcorkchar;
+
+begincorkchar("u","circumflex",hex"FB",accent_height#,0);
+italcorr cork_ic[a];
+complete_hat(lshift,rshift);
+endcorkchar;
+
+begincorkchar("u","umlaut",hex"FC",accent_height_ter#,0);
+italcorr cork_ic[a];
+complete_umlaut(lshift,rshift);
+endcorkchar;
+
+begincorkchar("u","long umlaut",hex"B6",accent_height#,0);
+italcorr cork_ic[a];
+complete_long_umlaut(lshift,rshift);
+endcorkchar;
+
+begincorkchar("u","circ",hex"B7",accent_height#,0);
+italcorr cork_ic[a];
+complete_circ(lshift,rshift);
+endcorkchar;
+
+begincorkchar("y","acute",hex"FD",accent_height#,0);
+italcorr cork_ic[a];
+complete_acute(lshift,rshift);
+endcorkchar;
+
+begincorkchar("y","umlaut",hex"B8",accent_height_ter#,0);
+italcorr cork_ic[a];
+complete_umlaut(lshift,rshift);
+endcorkchar;
+
+begincorkchar("z","acute",hex"B9",accent_height#,0);
+italcorr cork_ic[a];
+complete_acute(lshift,rshift);
+endcorkchar;
+
+begincorkchar("z","hacheck",hex"BA",accent_height#,0);
+italcorr cork_ic[a];
+complete_hacheck(lshift,rshift);
+endcorkchar;
+
+begincorkchar("z","dot",hex"BB",accent_height_bis#,0);
+italcorr cork_ic[a];
+complete_dot(lshift,rshift);
+endcorkchar;
diff --git a/fonts/mbboard/source/mbbcrkup.mf b/fonts/mbboard/source/mbbcrkup.mf
new file mode 100644
index 0000000000..db86a0a01d
--- /dev/null
+++ b/fonts/mbboard/source/mbbcrkup.mf
@@ -0,0 +1,322 @@
+% blackboard typefaces by Anthony Phan.
+% file: mbbcrkup.mf (Cork roman uppercase)
+% last modification: 25.10.2001.
+
+% some new instructions (eg. begincorkchar)
+% and new measures (eg. cap_accent_height#)
+% are defined in the driver file `bbcrkdrv.mf'.
+
+use_rule2;
+
+begincorkchar("A","grave",hex"C0",cap_accent_height#,0);
+italcorr cork_ic[a];
+complete_grave(lshift,rshift);
+endcorkchar;
+
+begincorkchar("A","acute",hex"C1",cap_accent_height#,0);
+italcorr cork_ic[a];
+complete_acute(lshift,rshift);
+endcorkchar;
+
+begincorkchar("A","circumflex",hex"C2",cap_accent_height#,0);
+italcorr cork_ic[a];
+complete_hat(lshift,rshift);
+endcorkchar;
+
+begincorkchar("A","tilde",hex"C3",cap_accent_height#,0);
+italcorr cork_ic[a];
+complete_tilde(lshift,rshift);
+endcorkchar;
+
+begincorkchar("A","umlaut",hex"C4",cap_accent_height_bis#,0);
+italcorr cork_ic[a];
+complete_umlaut(lshift,rshift);
+endcorkchar;
+
+begincorkchar("A","circ",hex"C5",0.7cap_accent_height#,0);
+italcorr cork_ic[a];
+pickup circle.nib;
+bot y4=tmp_h-eps; top y2=h+o; y0=y1=y3=0.5[y4,y2];
+x0=x2=x4=0.5[apprl,w-apprr]; x1-x0=x0-x3;
+lft x3=hround(x0-0.5max(hThick+thin,3u+thin))-eps;
+draw superellipse(z1,z2,z3,z4,superness);
+labels(1,2,3,4,0);
+endcorkchar;
+
+begincorkchar("A","breve",hex"80",cap_accent_height#,0);
+italcorr cork_ic[a];
+complete_breve(lshift,rshift);
+endcorkchar;
+
+begincorkchar("A","ogonek",hex"81",0,desc_depth#);
+italcorr cork_ic[a];
+complete_ogonek(w-apprr-0.5thin,0);
+endcorkchar;
+
+begincorkchar("C","acute",hex"82",cap_accent_height#,0);
+italcorr cork_ic[a];
+complete_acute(lshift,rshift);
+endcorkchar;
+
+begincorkchar("C","hacheck",hex"83",cap_accent_height#,0);
+italcorr cork_ic[a];
+complete_hacheck(lshift,rshift);
+endcorkchar;
+
+begincorkchar("C","cedilla",hex"C7",0,desc_depth#);
+italcorr cork_ic[a];
+pickup circle.nib; lft x0l=apprl; rt x0r=w-apprr;
+complete_cedilla(0.527[x0l,x0r],-o);
+endcorkchar;
+
+begincorkchar("D","hacheck",hex"84",cap_accent_height#,0);
+italcorr cork_ic[a];
+complete_hacheck(lshift,rshift);
+endcorkchar;
+
+begincorkchar("D","bar",hex"D0",0,0);
+italcorr cork_ic[a];
+pickup circle.nib;
+lft x1=Apprl-hround 1.25u; x2=Apprl; x3=Apprl+hthick+thin;
+rt x4-lft x1=slash_width; y1=y2=y3=y4=good.y 0.5h;
+pickup square.nib; draw z1..z2; draw z3..z4; labels(1,2,3,4);
+endcorkchar;
+
+begincorkchar("E","grave",hex"C8",cap_accent_height#,0);
+italcorr cork_ic[a];
+complete_grave(lshift,rshift);
+endcorkchar;
+
+begincorkchar("E","acute",hex"C9",cap_accent_height#,0);
+italcorr cork_ic[a];
+complete_acute(lshift,rshift);
+endcorkchar;
+
+begincorkchar("E","circumflex",hex"CA",cap_accent_height#,0);
+italcorr cork_ic[a];
+complete_hat(Apprl,Apprr);
+endcorkchar;
+
+begincorkchar("E","umlaut",hex"CB",cap_accent_height_bis#,0);
+italcorr cork_ic[a];
+complete_umlaut(Apprl,Apprr);
+endcorkchar;
+
+begincorkchar("E","hacheck",hex"85",cap_accent_height#,0);
+italcorr cork_ic[a];
+complete_hacheck(Apprl,Apprr);
+endcorkchar;
+
+begincorkchar("E","ogonek",hex"86",0,desc_depth#);
+italcorr cork_ic[a];
+pickup circle.nib; rt x0=w-apprr;
+complete_ogonek(x0,0);
+endcorkchar;
+
+begincorkchar("I","grave",hex"CC",cap_accent_height#,0);
+italcorr cork_ic[a];
+complete_grave(lshift,rshift);
+endcorkchar;
+
+begincorkchar("I","acute",hex"CD",cap_accent_height#,0);
+italcorr cork_ic[a];
+complete_acute(lshift,rshift);
+endcorkchar;
+
+begincorkchar("I","circumflex",hex"CE",cap_accent_height#,0);
+italcorr cork_ic[a];
+complete_hat(lshift,rshift);
+endcorkchar;
+
+begincorkchar("I","umlaut",hex"CF",cap_accent_height_bis#,0);
+italcorr cork_ic[a];
+complete_umlaut(lshift,rshift);
+endcorkchar;
+
+begincorkchar("I","dot",hex"9D",cap_accent_height_bis#,0);
+italcorr cork_ic[a];
+complete_dot(lshift,rshift);
+endcorkchar;
+
+begincorkchar("I","J",hex"9C",0,0);
+italcorr cork_ic[a+1];
+currentpicture:=currentpicture+cork_picture[a+1] shifted(w,0);
+correct_width_by(0,cork_wd[a+1]);
+endcorkchar;
+
+begincorkchar("G","breve",hex"87",cap_accent_height#,0);
+italcorr cork_ic[a];
+complete_breve(w-13u,0);
+endcorkchar;
+
+begincorkchar("L","acute",hex"88",cap_accent_height#,0);
+italcorr cork_ic[a];
+complete_acute(lshift,rshift);
+endcorkchar;
+
+begincorkchar("L","hacheck",hex"89",0,0);
+italcorr cork_ic[a];
+correct_width_by(0,0.5u#);
+pickup circle.nib; top y1=x_height; top y4=h;
+rt x3=w-apprr; x3-x5=hthick;
+lft x1=hround min(Apprl+hthick+thin+u,x5-thin);
+complete_comma;
+endcorkchar;
+
+begincorkchar("L","cross",hex"8A",0,0);
+italcorr cork_ic[a];
+y0=x_height-eps; x1l=Apprl-hround 1.25u;
+x0-hthick-0.5thin=x2l=x3l-hthick=Apprl+0.5thin;
+x4l-x1l=y4l-y1l=slash_width; z0=whatever[z1l,z4l];
+y4l-y4r=thin/((1++slant)*sind angle((z4l-z1l)slanted slant));
+x4l=x4r; z2l=whatever[z1l,z4l]; z3l=whatever[z1l,z4l];
+z1l-z1r=z2l-z2r=z3l-z3r=z4l-z4r;
+penstroke z1e..z2e; penstroke z3e..z4e;
+labels(0); penlabels(1,2,3,4);
+endcorkchar;
+
+begincorkchar("N","acute",hex"8B",cap_accent_height#,0);
+italcorr cork_ic[a];
+complete_acute(lshift,rshift);
+endcorkchar;
+
+begincorkchar("N","hacheck",hex"8C",cap_accent_height#,0);
+italcorr cork_ic[a];
+complete_hacheck(lshift,rshift);
+endcorkchar;
+
+begincorkchar("N","tilde",hex"D1",cap_accent_height#,0);
+italcorr cork_ic[a];
+complete_tilde(lshift,rshift);
+endcorkchar;
+
+begincorkchar("O","grave",hex"D2",cap_accent_height#,0);
+italcorr cork_ic[a];
+complete_grave(lshift,rshift);
+endcorkchar;
+
+begincorkchar("O","acute",hex"D3",cap_accent_height#,0);
+italcorr cork_ic[a];
+complete_acute(lshift,rshift);
+endcorkchar;
+
+begincorkchar("O","circumflex",hex"D4",cap_accent_height#,0);
+italcorr cork_ic[a];
+complete_hat(lshift,rshift);
+endcorkchar;
+
+begincorkchar("O","tilde",hex"D5",cap_accent_height#,0);
+italcorr cork_ic[a];
+complete_tilde(lshift,rshift);
+endcorkchar;
+
+begincorkchar("O","umlaut",hex"D6",cap_accent_height_bis#,0);
+italcorr cork_ic[a];
+complete_umlaut(lshift,rshift);
+endcorkchar;
+
+begincorkchar("O","long umlaut",hex"8E",cap_accent_height#,0);
+italcorr cork_ic[a];
+complete_long_umlaut(lshift,rshift);
+endcorkchar;
+
+begincorkchar("R","acute",hex"8F",cap_accent_height#,0);
+italcorr cork_ic[a];
+complete_acute(lshift,rshift);
+endcorkchar;
+
+begincorkchar("R","hacheck",hex"90",cap_accent_height#,0);
+italcorr cork_ic[a];
+complete_hacheck(lshift,rshift);
+endcorkchar;
+
+begincorkchar("S","acute",hex"91",cap_accent_height#,0);
+italcorr cork_ic[a];
+complete_acute(lshift,rshift);
+endcorkchar;
+
+begincorkchar("S","hacheck",hex"92",cap_accent_height#,0);
+italcorr cork_ic[a];
+complete_hacheck(lshift,rshift);
+endcorkchar;
+
+begincorkchar("S","cedilla",hex"93",0,desc_depth#);
+italcorr cork_ic[a];
+complete_cedilla(0.5[apprl,w-apprr],-o);
+endcorkchar;
+
+begincorkchar("S","S (es-zet)",hex"DF",0,0);
+italcorr cork_ic[a];
+currentpicture:=currentpicture+cork_picture[a] shifted(w,0);
+correct_width_by(0,charwd);
+endcorkchar;
+
+begincorkchar("T","hacheck",hex"94",cap_accent_height#,0);
+italcorr cork_ic[a];
+complete_hacheck(lshift,rshift);
+endcorkchar;
+
+begincorkchar("T","cedilla",hex"95",0,desc_depth#);
+italcorr cork_ic[a];
+complete_cedilla(0.5[apprl,w-apprr],0);
+endcorkchar;
+
+begincorkchar("U","grave",hex"D9",cap_accent_height#,0);
+italcorr cork_ic[a];
+complete_grave(lshift,rshift);
+endcorkchar;
+
+begincorkchar("U","acute",hex"DA",cap_accent_height#,0);
+italcorr cork_ic[a];
+complete_acute(lshift,rshift);
+endcorkchar;
+
+begincorkchar("U","circumflex",hex"DB",cap_accent_height#,0);
+italcorr cork_ic[a];
+complete_hat(lshift,rshift);
+endcorkchar;
+
+begincorkchar("U","umlaut",hex"DC",cap_accent_height_bis#,0);
+italcorr cork_ic[a];
+complete_umlaut(lshift,rshift);
+endcorkchar;
+
+begincorkchar("U","long umlaut",hex"96",cap_accent_height#,0);
+italcorr cork_ic[a];
+complete_long_umlaut(lshift,rshift);
+endcorkchar;
+
+begincorkchar("U","circ",hex"97",0.7cap_accent_height#,0);
+italcorr cork_ic[a];
+pickup circle.nib;
+bot y4=tmp_h-eps; top y2=h+o; y0=y1=y3=0.5[y4,y2];
+x0=x2=x4=0.5[apprl,w-apprr]; x1-x0=x0-x3;
+lft x3=hround(x0-0.5max(hThick+thin,3u+thin))-eps;
+draw superellipse(z1,z2,z3,z4,superness);
+labels(1,2,3,4,0);
+endcorkchar;
+
+begincorkchar("Y","acute",hex"DD",cap_accent_height#,0);
+italcorr cork_ic[a];
+complete_acute(lshift,rshift);
+endcorkchar;
+
+begincorkchar("Y","umlaut",hex"98",cap_accent_height_bis#,0);
+italcorr cork_ic[a];
+complete_umlaut(lshift,rshift);
+endcorkchar;
+
+begincorkchar("Z","acute",hex"99",cap_accent_height#,0);
+italcorr cork_ic[a];
+complete_acute(lshift,rshift);
+endcorkchar;
+
+begincorkchar("Z","hacheck",hex"9A",cap_accent_height#,0);
+italcorr cork_ic[a];
+complete_hacheck(lshift,rshift);
+endcorkchar;
+
+begincorkchar("Z","dot",hex"9B",cap_accent_height_bis#,0);
+italcorr cork_ic[a];
+complete_dot(lshift,rshift);
+endcorkchar; \ No newline at end of file
diff --git a/fonts/mbboard/source/mbbdigit.mf b/fonts/mbboard/source/mbbdigit.mf
new file mode 100644
index 0000000000..a471148eeb
--- /dev/null
+++ b/fonts/mbboard/source/mbbdigit.mf
@@ -0,0 +1,229 @@
+% blackboard typefaces by Anthony Phan.
+% file: mbbdigit.mf (Arabic numerals)
+% last modification: 25.10.2001.
+
+def horizontal_rules_list=0.25h,0.5h,0.7h,
+ -body_depth,-desc_depth,x_height,cap_height,asc_height,body_height
+enddef;
+
+use_rule1;
+
+if not(known old_digits): old_digits=false; fi
+
+beginchar("0",8u#+2appr#,
+ if old_digits: x_height# else: fig_height# fi,0);
+ "The numeral 0";
+ italcorr if old_digits: x_height#
+ else: fig_height# fi *slant-.5u#;
+ pickup circle.nib;
+ bbcircle1(apprl-ho,w-apprr+ho,h+o,-o); draw last_path;
+ bbbowl(z1b,z1a,z1d,hThick) last_path;
+ bbbowl(z1b,z1c,z1d,hThick) last_path;
+endchar;
+
+beginchar("1",8u#+2appr#,
+ if old_digits: x_height# else: fig_height# fi,0);
+ "The numeral 1";
+ italcorr if old_digits: x_height#
+ else: fig_height# fi *slant-.5u#;
+ pickup circle.nib;
+ y3r=top y4=top y5=h+o;
+ bot y6=bot y7=0; y1r=vround(0.68h+0.5thin);
+ rt x5=rt x6=hround(0.5[apprl,w-apprr]+0.5(u+hthick+thin));
+ x6-x7=hthick; x3r=lft x4=0.25[lft x7,rt x6];
+ x1r=hround max(lft x7-2.3u,apprl+0.5u);
+ z2r=0.5[z1r,z3r]+0.08(z3r-z1r)rotated -90;
+ tmpp_path:=z1r...z2r{z3r-z1r}...z3r;
+ ortho_penpos1(thin,-direction 0 of tmpp_path);
+ ortho_penpos2(thin,z1r-z3r);
+ ortho_penpos3(thin,-direction 2 of tmpp_path);
+ tmp_path:=z1...z2{z3-z1}...z3;
+ z8=tmp_path intersectionpoint (z7..(x7,y3r));
+ penstroke z1e...z2e{z3e-z1e}...z3e; draw z7..z8;
+ pickup square.nib; draw z4--z5--z6--z7;
+ penlabels(1,2,3); labels(4,5,6,7,8);
+endchar;
+
+beginchar("2",8u#+2appr#,
+ if old_digits: x_height# else: fig_height# fi,0);
+ "The numeral 2";
+ italcorr if old_digits: x_height#
+ else: fig_height# fi *slant-.5u#;
+ pickup circle.nib;
+ x1l=rt x7=w-apprr+ho; x2l=lft x13=apprl; x9=x12=0.5[x13,x7];
+ y1l=y2l=0; bot y7=bot y13=vround 0.7h; top y12=h+o;
+ penpos1(thin,90); penpos2(thin,90); z3l=z2r;
+ adjust_slanted_bar(3l,7,4,6l)((thick+thin)/2,-1);
+ z5r-z4=z8r-z7=z4-z3l;
+ a:=diag_width(thin,z7-z4);
+ penpos3(a,0); penpos5(a,0); penpos6(a,0); penpos8(a,0);
+ numeric a,x,y;
+ (x,y)=(z7-z4)slanted slant; a=angle((y,-x)slanted -slant);
+ z9=whatever[z3,z6];
+ z9l=whatever[z3l,z6l]; z9l=z9+whatever*dir(a);
+ z9r=whatever[z3r,z6r]; z9r=z9+whatever*dir(a);
+ z10=whatever[z5,z8]; z10=z9+whatever*dir(a);
+ z10r=whatever[z5r,z8r]; z10r=z9+whatever*dir(a);
+ z10l=whatever[z5l,z8l]; z10l=z9+whatever*dir(a);
+ x7l=x7; z7l=whatever[z5,z8]; z11-z7=z9-z10;
+ x11l=x11; z11l=whatever[z3,z6];
+ penstroke z1e..z2e; penstroke z3e..z9e; penstroke z5e..z10e;
+ draw z9..controls 2/3[z9,z11l] and 2/3[z11,z11l]..z11 up_to_left z12;
+ draw z10..controls 2/3[z10,z7l] and 2/3[z7,z7l]..z7
+ up_to_left z12 left_to_down z13;
+ square_end13(down); penlabels(range 1 thru 13);
+endchar;
+
+beginchar("3",8u#+2appr#,
+ if old_digits: x_height#,desc_depth# else: fig_height#,0 fi);
+ "The numeral 3";
+ italcorr if old_digits: x_height#
+ else: fig_height# fi *slant-.5u#;
+ pickup circle.nib; top y2=h+o; bot y7=-d-o;
+ bot y4=bot y5=vround 0.5(h-d); y3=0.5[y2,y4];
+ bot y1=vround y3; y6=0.5[y4,y7]; top y8=0.2[-d,h];
+ lft x1-hround 0.2u=lft x8=apprl; rt x3=rt x6-ho=w-apprr;
+ x4=0.5[x8,x3]; x6-x9=hThick; x11=min(x9,x3-thin);
+ lft x5=hround min(apprl+2.75u,x11-1.5thin);
+ tmpp_path:=z5..z4 right_to_up z3 & elliptic_arc(3,2,1);
+ tmp_path:=z5..z4 left_to_down z6& elliptic_arc(6,7,8);
+ bbbowl(z4,z6,z7,hThick) tmp_path;
+ bbbowl(z2,z3,z4,max(0,x3-x.bowl.mid)) tmpp_path;
+ draw tmp_path; draw tmpp_path;
+ square_end1(z1-z1');
+ square_end5(left);
+ square_end8(z8-z8');
+ penlabels(range 1 thru 8,8');
+endchar;
+
+beginchar("4",8u#+2appr#,
+ if old_digits: x_height#,desc_depth# else: fig_height#,0 fi);
+ "The numeral 4";
+ italcorr if old_digits: x_height#
+ else: fig_height# fi *slant-.5u#;
+ pickup circle.nib;
+ rt x2=w-apprr-hround u; top y2=h+o; x3=x2=lft x7;
+ bot y7=if old_digits:0 else: vround 0.25h fi;
+ bot y3=-d; y4=y3; x4=x3-hthick; x5=rt x8=x4; y8=y7=y9=y6;
+ rt x6=w-apprr+hround 0.5u; lft x9=x10l=apprl-hround 0.5u;
+ x11l=0.25[lft x4,rt x3]; y10l=top y9; y11l=top y2;
+ a:=diag_width(thin,z11l-z10l);
+ penpos10(a,0); penpos11(a,0); z1r=z11; penpos2(thin,90);
+ z1l=whatever[z10,z11]; y1l=y2l; z5=whatever[z10,z11];
+ draw z5..z4; penstroke z10e..z11e; penstroke z1e..z2e;
+ pickup square.nib; draw z2--z3--z4; draw z6--z7; draw z8--z9;
+ penlabels(range 1 thru 11);
+endchar;
+
+beginchar("5",8u#+2appr#,
+ if old_digits: x_height#,desc_depth# else: fig_height#,0 fi);
+ "The numeral 5";
+ italcorr if old_digits: x_height#
+ else: fig_height# fi *slant-.5u#;
+ penpos6(thin,-90);
+ pickup circle.nib;
+ top y1=top y2=top y10=h;
+ top y6=x_height-d; bot y8=-d-o;
+ top y9=0.2[-d,h]; y7=0.5[y8,y6];
+ bot y3=bot y4=y5r=min(vround 0.5(h-d),bot y6);
+ lft x9=apprl; rt x1=w-apprr-hround 0.3u;
+ rt x7=w-apprr+ho; lft x2=lft x3=apprl+hround 0.3u;
+ x10-x2=hthick;
+ tmp_path:=elliptic_arc(7,8,9);
+ x4=0.5[x3,x10]; x6=max(0.4[x4,x7],x8);
+ x5r=x4+0.5thin*((1++slant)-slant);
+ z0=(z6r-z5r) xscaled 1/3;
+ ortho_penpos5(thin,z0);
+ tmp_path:=z3--z4--z5{z0}...z6
+ right_to_down z7 & tmp_path;
+ z11=tmp_path intersectionpoint (z10..(x10,y3));
+ bbbowl(z6,z7,z8,hThick) tmp_path;
+ draw subpath (3,infinity) of tmp_path; draw z10..z11;
+ penstroke z5e{z0}...z6e{right};
+ pickup square.nib; draw z1--z2--z3--z4;
+ square_end9(z9-z9');
+ labels(1,2,3,4,7,8,9,9',10,11);
+ penlabels(5,6);
+endchar;
+
+beginchar("6",8u#+2appr#,fig_height#,0);
+ "The numeral 6";
+ italcorr fig_height#*slant-.5u#;
+ numeric t;
+ pickup circle.nib; top y2=h+o;
+ bot y1=min(0.095[h,-d],bot y2-1); bot y4=-d-o;
+ top y6=x_height-d; y3=0.5[y2,y4]; y5=y7=0.5[y4,y6];
+ rt x1=w-apprr-0.74u; lft x3=lft x7=apprl-ho;
+ rt x5=w-apprr+ho; x4=x6=0.5[x3,x5];
+ tmp_path:=reverse elliptic_arc(3,2,1)
+ & z3 down_to_right z4 right_to_up z5
+ up_to_left z6 left_to_down z7;
+ bbbowl(z2,z3,z4,hThick) tmp_path;
+ t=8+xpart(subpath (8,12) of tmp_path intersectiontimes bowl_path);
+ bbbowl(z6,z5,z4,hThick) tmp_path;
+ draw subpath (0,t) of tmp_path;
+ square_end1(z1-z1');
+ labels(1,1',2,3,4,5,6,7);
+endchar;
+
+beginchar("7",8u#+2appr#,
+ if old_digits: x_height#,desc_depth# else: fig_height#,0 fi);
+ "The numeral 7";
+ italcorr if old_digits: x_height#
+ else: fig_height# fi *slant-.5u#;
+ y1r=y2r=h; x1r=apprl; x2r=w-apprr+hround 0.75u;
+ penpos1(thin,90); penpos2(thin,90);
+ z3r=z2l; y6l=y4r=-d; y5l=y3r; x3r-x4r=hround 4.25u;
+ numeric a;
+ a=diag_width(1,z3r-z4r);
+ x4r-x6l=x3r-x5l=(thick+thin)*a;
+ penpos3(thin*a,0); penpos4(thin*a,0);
+ penpos5(thin*a,0); penpos6(thin*a,0);
+ y4a-y4=thin; z4a=whatever[z3,z4]; z6a-z6=z4a-z4;
+ penstroke z1e..z2e; penstroke z3e..z4e;
+ penstroke z5e..z6e; fill z4a--z6a--z6--z4--cycle;
+ penlabels(range 1 thru 8); labels(4a,6a);
+endchar;
+
+beginchar("8",8u#+2appr#,fig_height#,0);
+ "The numeral 8";
+ italcorr fig_height#*slant-.5u#;
+ pickup circle.nib;
+ rt z1=(w-apprr,0.5[y4,y2]); top z2=(0.5[x1,x3],h+o); lft z3=(apprl,y1);
+ bot z4=(x2,vround 0.5(h-d));
+ rt z5=(w-apprr+ho,0.5[y7,y4]); bot z7=(x2,-d-o); lft z6=(apprl-ho,y5);
+ tmpp_path:=superellipse(z1,z2,z3,z4,superness);
+ tmp_path:=superellipse(z5,z4,z6,z7,superness);
+ bbbowl(z4,z6,z7,hThick) tmp_path;
+ bbbowl(z2,z3,z4,max(0,x.bowl.mid-x3)) tmpp_path;
+ bbbowl(z4,z5,z7,hThick) tmp_path;
+ bbbowl(z2,z1,z4,max(0,x1-x.bowl.mid)) tmpp_path;
+ draw tmpp_path; draw tmp_path;
+ labels(1,2,3,4,5,6,7);
+endchar;
+
+beginchar("9",8u#+2appr#,
+ if old_digits: x_height#,desc_depth# else: fig_height#,0 fi);
+ "The numeral 9";
+ italcorr if old_digits: x_height#
+ else: fig_height# fi *slant-.5u#;
+ numeric t;
+ pickup circle.nib; bot y2=-d-o;
+ top y1=max(0.095[-d,h],top y2+1); top y4=h+o;
+ bot y6=h-x_height; y3=0.5[y2,y4]; y5=y7=0.5[y4,y6];
+ lft x1=apprl+0.74u; rt x3=rt x7=w-apprr+ho;
+ lft x5=apprl-ho; x4=x6=0.5[x3,x5]; x3-x8=x10-x5=hThick;
+ tmp_path:=reverse elliptic_arc(3,2,1)
+ & z3 up_to_left z4 left_to_down z5
+ down_to_right z6 right_to_up z7;
+ bbbowl(z4,z3,z2,hThick) tmp_path;
+ t=8+xpart(subpath (8,12) of tmp_path intersectiontimes bowl_path);
+ bbbowl(z4,z5,z6,hThick) tmp_path;
+ draw subpath (0,t) of tmp_path;
+ square_end1(z1-z1');
+ labels(1,1',2,3,4,5,6,7);
+endchar;
+
+
+
+
diff --git a/fonts/mbboard/source/mbbdrivr.mf b/fonts/mbboard/source/mbbdrivr.mf
new file mode 100644
index 0000000000..5ca2718102
--- /dev/null
+++ b/fonts/mbboard/source/mbbdrivr.mf
@@ -0,0 +1,307 @@
+% blackboard typefaces by Anthony Phan.
+% file: mbbdrivr.mf (driver file)
+% last modification: 25.10.2001.
+
+font_coding_scheme "Unknown";
+mode_setup; font_setup;
+
+font_coding_scheme:="Unknown";
+
+% skewchar:=hex"7F";
+% hypenchar:=hex"60";
+
+% roman
+
+bblig_ct :=hex"09"; bblig_st :=hex"0A"; bblig_ff :=hex"0B";
+bblig_fi :=hex"0C"; bblig_fl :=hex"0D"; bblig_ffi :=hex"0E";
+bblig_ffl:=hex"0F"; bbdotless_i:=hex"10"; bbdotless_j:=hex"11";
+
+% roman extension
+
+bbes_zet:=hex"19";
+bbae :=hex"1A"; bboe:=hex"1B"; bbslash_o:=hex"1C";
+bbAE :=hex"1D"; bbOE:=hex"1E"; bbslash_O:=hex"1F";
+
+% bbcross_d:=hex"F8";
+% bbEng:=hex"F4"; bbeng:=hex"FC";
+% bbThorn:=hex"F5"; bbthorn:=hex"FD";
+
+% accents
+
+bbgrave :=hex"12"; bbacute :=hex"13"; bbhacheck :=hex"14";
+bbbreve :=hex"15"; bbmacron :=hex"16"; bbcirc_accent:=hex"17";
+bbcedilla :=hex"18";
+bbcircumflex :=hex"5E"; bbdotaccent:=hex"5F";
+bblong_umlaut:=hex"7D"; bbtilde :=hex"7E"; bbumlaut :=hex"7F";
+% bbleft_slanted_cross:=hex"20";% polish
+% bbogonek:=hex"22";% Polish
+
+% greek accents
+
+% bbstraight_accent:=hex"C8";
+% bbrough:=hex"C9"; bbsmooth:=hex"CA";
+% bbgreek_tilde:=hex"CB";
+% bbrough_tilde:=hex"CC"; bbsmooth_tilde:=hex"CD";
+% bbsubscript_iota:=hex"CE";
+
+% punctuation
+
+bbnormal_space :=hex"20"; bbasterisk :=hex"2A";
+bbcomma :=hex"2C"; bbperiod :=hex"2E";
+bbcolon :=hex"3A"; bbsemicolon :=hex"3B";
+bbquestion_mark :=hex"3F"; bbexclamation_point :=hex"21";
+bbspanish_shriek:=hex"07"; bbspanish_query :=hex"08";
+bbslash :=hex"2F"; bbback_slash :=hex"5C";
+
+parenthesis_left:=hex"28"; parenthesis_right :=hex"29";
+bracket_left :=hex"5B"; bracket_right :=hex"5D";
+brace_left :=hex"DB"; vertical :=hex"DC" ; brace_right:=hex"DD";
+angle_left :=hex"DE"; angle_right :=hex"DF";
+
+bbfso_quotes :=hex"00"; bbfsc_quotes :=hex"01";
+bbfdo_quotes :=hex"02"; bbfdc_quotes :=hex"03";
+
+bbapostrophe :=hex"27"; bbreverse_apostrophe:=hex"60";
+bbopening_quotes:=hex"04"; bbclosing_quotes :=hex"05";
+% bbgerman_opening_comma:=hex"";
+bbgerman_opening_quotes:=hex"06";
+bbstraight_quotes:=hex"22"; % ASCII location
+bbdash:=hex"2D"; bben_dash:=hex"7B"; bbem_dash:=hex"7C";
+% bbvariant_dash:=hex"";% centered dash.
+% bbunderscore:=hex"";
+
+% blackboard symbols
+
+plus_sign :=hex"2B";
+equal_sign :=hex"3D";
+hash_sign :=hex"23";
+inferior_sign :=hex"3C";
+superior_sign :=hex"3E";
+% bbhash_mark :=hex"23";
+bbdollar :=hex"24";
+bbpercent :=hex"25";
+bbampersand :=hex"26";
+bbat_sign :=hex"40";
+bbpartial :=hex"A0";
+bbWeierstrass_p:=hex"80";
+% bbperthousand :=hex"E8";
+% bbpertenthousand:=hex"E9";
+bbeuro :=hex"FB";
+bbpound :=hex"FC";
+bbcent :=hex"FD";
+bbyen :=hex"FE";
+% bbshereq :=hex"FF";
+% bbestimated :=hex"EE";
+% bbbar_h :=hex"F7";
+% bbcross_h :=hex"FF";
+
+ligtable inferior_sign: inferior_sign=:bbfdo_quotes;
+ligtable superior_sign: superior_sign=:bbfdc_quotes;
+ligtable bbdash: bbdash=:bben_dash;
+ligtable bben_dash: bbdash=:bbem_dash;
+ligtable bbreverse_apostrophe: bbreverse_apostrophe=:bbopening_quotes;
+ligtable bbapostrophe: bbapostrophe=:bbclosing_quotes;
+ligtable bbcomma: bbcomma=:bbgerman_opening_quotes;
+ligtable bbexclamation_point: bbreverse_apostrophe=:bbspanish_shriek;
+ligtable bbquestion_mark: bbreverse_apostrophe=:bbspanish_query;
+
+% greek uppercase
+
+bbAlpha:=hex"81"; bbBeta :=hex"82"; bbGamma :=hex"83";
+bbDelta:=hex"84"; bbEpsilon:=hex"85"; bbZeta :=hex"86";
+bbEta :=hex"87"; bbTheta :=hex"88"; bbIota :=hex"89";
+bbKappa:=hex"8A"; bbLambda :=hex"8B"; bbMu :=hex"8C";
+bbNu :=hex"8D"; bbXi :=hex"8E"; bbOmicron:=hex"8F";
+bbPi :=hex"90"; bbRho :=hex"91"; bbSigma :=hex"92";
+bbTau :=hex"93"; bbUpsilon:=hex"94"; bbPhi :=hex"95";
+bbChi :=hex"96"; bbPsi :=hex"97"; bbOmega :=hex"98";
+% varUpsilon:=hex"";
+
+% greek like symbols
+
+bbnabla :=hex"9A"; bbcoprod :=hex"9B"; bbmho:=hex"9C";
+bbslash_Sigma:=hex"9D"; bbslash_nabla:=hex"9E";
+
+% ionian uppercase
+
+% bbDigamma:=hex"C0"; bbKoppa:=hex"C1"; bbSampi:=hex"C2";
+
+% greek lowercase
+
+bbalpha:=hex"A1"; bbbeta :=hex"A2"; bbgamma :=hex"A3";
+bbdelta:=hex"A4"; bbepsilon:=hex"A5"; bbzeta :=hex"A6";
+bbeta :=hex"A7"; bbtheta :=hex"A8"; bbiota :=hex"A9";
+bbkappa:=hex"AA"; bblambda :=hex"AB"; bbmu :=hex"AC";
+bbnu :=hex"AD"; bbxi :=hex"AE"; bbomicron:=hex"AF";
+bbpi :=hex"B0"; bbrho :=hex"B1"; bbsigma :=hex"B2";
+bbtau :=hex"B3"; bbupsilon:=hex"B4"; bbphi :=hex"B5";
+bbchi :=hex"B6"; bbpsi :=hex"B7"; bbomega :=hex"B8";
+% variants
+%bbvarbeta:=hex"9F";
+bbvarepsilon:=hex"B9"; bbvartheta:=hex"BA";
+bbvarkappa :=hex"BB"; bbvarpi :=hex"BC";
+bbvarrho :=hex"BD"; bbvarsigma:=hex"BE";
+bbvarphi :=hex"BF";
+
+% greek like letters
+
+bbslash_lambda:=hex"9F";
+
+% ionian lowercase
+
+% bbdigamma:=hex"C3"; bbkoppa:=hex"C4"; bbsampi:=hex"C5";
+bbvardigamma:=hex"99";
+% bbvarkoppa:=hex"C7";
+
+% Activate to allow characters with undefined code.
+% (for proof mode compilation)
+
+% let iff=always_iff;
+
+% let the show begin :
+
+input mbbromup;
+input mbbromlo;
+input mbbromlg;
+input mbbromxu;
+input mbbromxl;
+input mbbaccnt;
+input mbbdigit;
+input mbbsymbl;
+input mbbpunct;
+input mbbgrkup;
+input mbbgrklo;
+% input mbbextra;
+
+%% ligtable's funny examples:
+%% || is the left boundary character that precede every word.
+%% Defining is ligtable allows to produce automatic replacements
+%% such as for beta (or hebrew letters with final forms).
+%% {\it boundarychar\/} is an internal variable which has to be
+%% set to a value between 0 and 255. The corresponding character
+%% plays the symmetric role of ||.
+% boundarychar:=0;
+% ligtable ||:bbvarbeta=:bbbeta;
+% ligtable "u": boundarychar=:bbSigma;
+
+% parameters for TFM files.
+
+font_slant=slant;
+font_x_height=x_height#;
+font_normal_stretch=3u#;
+font_normal_shrink=2u#;
+font_quad=18u#+4letter_fit#;
+font_extra_space=2u#;
+font_normal_space=6u#+2letter_fit#;
+
+k#:=-.25u#; kk#:=-0.5u#; kkk#:=-0.75u#; kkkk#:=-u#;% 4 degrees of kerning
+
+ligtable "f" : "f" =: bblig_ff, "i" =: bblig_fi,
+"l"=:bblig_fl, "f" =: bblig_ff,
+bbapostrophe kern 1.25u#, bbquestion_mark kern 1.25u#,
+bbexclamation_point kern 1.25u#, parenthesis_right kern 1.25u#,
+bracket_right kern 1.25u#, brace_right kern 1.25u#,
+skipto 1;
+
+ligtable bblig_ff : "i" =: bblig_ffi, "l" =: bblig_ffl,
+bbapostrophe kern 1.25u#, bbquestion_mark kern 1.25u#,
+bbexclamation_point kern 1.25u#, parenthesis_right kern 1.25u#,
+bracket_right kern 1.25u#, brace_right kern 1.25u#,
+skipto 1;
+
+%ligtable "c" : "t"=: bblig_ct;
+%ligtable "s" : "t"=: bblig_st;
+
+ligtable "e" : "o" : "b" : "p" : bbae: bboe: bbslash_o:
+bbdelta: bbomicron: bbphi: bbvarphi: bbrho: bbvarrho: bbomega:
+"x" kern kkk#, "v" kern kk#, "w" kern k#, "z" kern kk#,
+bbgamma kern kk#, bblambda kern kk#, bbtau kern kk#,
+bbchi kern kkk#, bbvarkappa kern kkk#;
+
+ligtable 1:: "v" : "z" : bbgamma: bblambda: bbtau:
+"a" kern kk#, "e" kern kk#, "o" kern kk#, "c" kern kk#,
+"d" kern kk#, "g" kern kk#, "q" kern kk#, bbae kern kk#,
+bboe kern kk#, bbslash_o kern kk#,
+bbalpha kern kk#, bbepsilon kern kk#, bbdelta kern kk#,
+bbphi kern kk#, bbvarphi kern kk#, bbomega kern kk#;
+
+ligtable "r" : "w" :
+"a" kern k#, "e" kern k#, "o" kern k#, "c" kern k#,
+"d" kern k#, "g" kern k#, "q" kern k#, bbae kern k#,
+bboe kern k#, bbslash_o kern k#,
+bbalpha kern k#, bbepsilon kern k#, bbdelta kern k#,
+bbphi kern k#, bbvarphi kern k#, bbomega kern k#;
+
+ligtable "k" : "x" : bbxi: bbzeta: bbkappa: bbchi: bbvarkappa:
+"a" kern kkk#, "e" kern kkk#, "o" kern kkk#, "c" kern kkk#,
+"d" kern kkk#, "g" kern kkk#, "q" kern kkk#, bbae kern kkk#,
+bboe kern kkk#, bbslash_o kern kkk#,
+bbalpha kern kkk#, bbepsilon kern kkk#, bbdelta kern kkk#,
+bbphi kern kkk#, bbvarphi kern kkk#, bbomega kern kkk#;
+
+% hebrew encoding
+ numeric bbhebr[];%bbhebvow[],bbhebmas[];
+ for i=0 upto 26: bbhebr[i]=hex"C0"+i; endfor% can go up to 31
+% ligtable bbhebr[5]: bbhebr[5]=:bbhebr[27];
+% ligtable bbhebr[9]:bbhebr[5]=:bbhebr[28],bbhebr[9]=:bbhebr[29];
+% for i=0 upto 31: bbhebmas[i]=hex"A0"+i; endfor
+% for i=0 upto 20: bbhebvow[i]=hex"C0"+i; endfor
+ input mbbhebrw;
+ dagesh_accent:=hex"FF";
+ ligtable dagesh_accent:
+ bbhebr[0]=:bbhebr[0]+32,
+ bbhebr[1]=:bbhebr[1]+32,
+ bbhebr[2]=:bbhebr[2]+32,
+ bbhebr[3]=:bbhebr[3]+32,
+ bbhebr[4]=:bbhebr[4]+32,
+ bbhebr[5]=:bbhebr[5]+32,
+ bbhebr[6]=:bbhebr[6]+32,
+ bbhebr[7]=:bbhebr[7]+32,
+ bbhebr[8]=:bbhebr[8]+32,
+ bbhebr[9]=:bbhebr[9]+32,
+ bbhebr[10]=:bbhebr[10]+32,
+ bbhebr[11]=:bbhebr[11]+32,
+ bbhebr[12]=:bbhebr[12]+32,
+ bbhebr[13]=:bbhebr[13]+32,
+ bbhebr[14]=:bbhebr[14]+32,
+ bbhebr[15]=:bbhebr[15]+32,
+ bbhebr[16]=:bbhebr[16]+32,
+ bbhebr[17]=:bbhebr[17]+32,
+ bbhebr[18]=:bbhebr[18]+32,
+ bbhebr[19]=:bbhebr[19]+32,
+ bbhebr[20]=:bbhebr[20]+32,
+ bbhebr[21]=:bbhebr[21]+32,
+ bbhebr[22]=:bbhebr[22]+32,
+ bbhebr[23]=:bbhebr[23]+32,
+ bbhebr[24]=:bbhebr[24]+32,
+ bbhebr[25]=:bbhebr[25]+32,
+ bbhebr[26]=:bbhebr[26]+32;
+ dagesh_mark:=true;
+ for i=0 upto 26: bbhebr[i]:=hex"E0"+i; endfor
+ input mbbhebrw;
+% input mbbhebvw;
+% input mbbhebma;
+
+% ligtable "A": "L": bbDelta : bbLambda :
+% "T" kern -2u#, "V" kern -2u#, "W" kern -2u#, "Y" kern -2u#,
+% bbTau kern -2u#, bbUpsilon kern -2u#;
+
+% ligtable "T" : "V" : "W" : "Y" : bbTau : bbUpsilon :
+% "a" kern -2u#, "c" kern -2u#, "d" kern -2u#, "e" kern -2u#,
+% "g" kern -2u#, "m" kern -2u#, "n" kern -2u#, "o" kern -2u#,
+% "q" kern -2u#,"r" kern -2u#,"s" kern -2u#,"u" kern -2u#,
+% "v" kern -2u#,"w" kern -2u#,"x" kern -2u#,"y" kern -2u#,
+% "y" kern -2u#,
+% bbalpha kern -2u#, bbgamma kern -2u#, bbepsilon kern -2u#,
+% bbvarepsilon kern -2u#, bbeta kern -2u#, bbiota kern -2u#,
+% bbkappa kern -2u#, bbvarkappa kern -2u#, bbmu kern -2u#,
+% bbnu kern -2u#, bbomicron kern -2u#, bbpi kern -2u#,
+% bbvarpi kern -2u#, bbrho kern -2u#, bbvarrho kern -2u#,
+% bbsigma kern -2u#, bbvarsigma kern -2u#,
+% bbtau kern -2u#, bbupsilon kern -2u#, bbphi kern -2u#,
+% bbchi kern -2u#, bbpsi kern -2u#, bbomega kern -2u#,
+% "A" kern -2u#, bbDelta kern -2u#,bbLambda kern -2u#;
+end.
+
+
+
diff --git a/fonts/mbboard/source/mbbextra.mf b/fonts/mbboard/source/mbbextra.mf
new file mode 100644
index 0000000000..ce9b837562
--- /dev/null
+++ b/fonts/mbboard/source/mbbextra.mf
@@ -0,0 +1,7 @@
+% blackboard typefaces by Anthony Phan.
+% file: bbextra.mf (temporary designs)
+% last modification: 25.10.2001.
+
+def horizontal_rules_list=0.4h,0.5h,0.6h,
+ -body_depth,-desc_depth,x_height,cap_height,asc_height,body_height
+enddef;
diff --git a/fonts/mbboard/source/mbbgr10.mf b/fonts/mbboard/source/mbbgr10.mf
new file mode 100644
index 0000000000..d5b0ddb798
--- /dev/null
+++ b/fonts/mbboard/source/mbbgr10.mf
@@ -0,0 +1,20 @@
+% blackboard typefaces by Anthony Phan.
+% file: mbbgr10.mf (parameters' file for 10 points greek fonts)
+% last modification: 25.10.2001.
+
+if unknown mbbbase: input mbbbase fi
+
+font_identifier:="mbbgr"; font_size 10pt#;
+
+slant:=0;
+square_dots:=false;
+math_fitting:=false;
+variant_a:=true; variant_f:=false;
+variant_g:=false; variant_y:=false;
+old_digits:=false; square_hebrew:=true;
+ab_up_factor:=0.05; ab_down_factor:=0.15;
+hmn_factor:=0.15; uy_factor:=0.15;
+
+input mbblight;
+input mbbgrkdr;
+
diff --git a/fonts/mbboard/source/mbbgrkdr.mf b/fonts/mbboard/source/mbbgrkdr.mf
new file mode 100644
index 0000000000..7ba734490d
--- /dev/null
+++ b/fonts/mbboard/source/mbbgrkdr.mf
@@ -0,0 +1,124 @@
+% blackboard typefaces by Anthony Phan.
+% file: mbbgrkdr.mf (greek driver file)
+% last modification: 25.10.2001.
+
+mode_setup; font_setup;
+font_coding_scheme:="mbb greek font";
+% Inspired by Silvio Levi and Yannis Haralambous' work
+
+%
+%
+% Activate to allow characters with undefined code.
+% (for proof mode compilation)
+
+%def iff expr b=
+% if b: let next_=use_it else: let next_=use_it fi; next_
+%enddef;
+
+bbrough=hex"10"; bbsmooth=hex"11";
+bbgrave=hex"12"; bbacute=hex"13";
+bbcircumflex=hex"5E"; bbhacheck=hex"14"; bbtilde=hex"7E";
+bbbreve=hex"15"; bbmacron=hex"16";
+bbdotaccent=hex"5F"; bbumlaut=hex"7F";bbcirc_accent=hex"17";
+%bbcedilla=hex"18";
+bbsubscript_iota:=hex"18";
+bblong_umlaut:=hex"7D";
+% bbleft_slanted_cross=hex"20";
+% bbogonek=hex"22";% Polish
+% bbstraight_accent=hex"E0";% Greek
+
+bbnormal_space:=hex"20"; bbasterisk=hex"2A";
+bbcomma=hex"2C"; bbperiod=hex"2E";
+bbcolon=hex"3A"; bbsemicolon=hex"3B";
+bbquestion_mark=hex"3F"; bbexclamation_point=hex"21";
+bbspanish_shriek=hex"07"; bbspanish_query=hex"08";
+bbslash=hex"2F"; bbback_slash=hex"5C";
+
+parenthesis_left=hex"28"; parenthesis_right=hex"29";
+bracket_left=hex"5B"; bracket_right=hex"5D";
+%brace_left=hex"DB"; vertical=hex"DC"; brace_right=hex"DD";
+%angle_left=hex"DE"; angle_right=hex"DF";
+
+bbfso_quotes=hex"00"; bbfsc_quotes=hex"01";
+bbfdo_quotes=hex"02"; bbfdc_quotes=hex"03";
+
+bbapostrophe=hex"27"; bbreverse_apostrophe=hex"60";
+bbopening_quotes=hex"04"; bbclosing_quotes=hex"05";
+% bbgerman_opening_comma:=hex"";
+bbgerman_opening_quotes:=hex"06";
+bbstraight_quotes:=hex"22"; % ASCII location
+bbdash:=hex"2D"; bben_dash:=hex"7B"; bbem_dash:=hex"7C";
+% bbvariant_dash:=hex"";% centered dash.
+% bbunderscore:=hex"";
+
+% symbols encoding
+% partial=hex"A0";
+% bbpartial_derivative=hex"A0";
+plus_sign:=hex"2B";
+equal_sign:=hex"3D";
+inferior_sign:=hex"3C";
+superior_sign:=hex"3E";
+hash_sign:=hex"23";
+bbpercent=hex"25";
+bbampersand=hex"26";
+bbdollar=hex"24";
+% bbeuro=hex"E8"; bbpound=hex"E9"; bbcent=hex"EA";
+% bbhash_mark=hex"23";
+bbat_sign=hex"40"; Infinity=hex"80";
+
+ligtable inferior_sign: inferior_sign=:bbfdo_quotes;
+ligtable superior_sign: superior_sign=:bbfdc_quotes;
+ligtable bbdash: bbdash=:bben_dash;
+ligtable bben_dash: bbdash=:bbem_dash;
+ligtable bbreverse_apostrophe: bbreverse_apostrophe=:bbopening_quotes;
+ligtable bbapostrophe: bbapostrophe=:bbclosing_quotes;
+ligtable bbcomma: bbcomma=:bbgerman_opening_quotes;
+ligtable bbexclamation_point: bbreverse_apostrophe=:bbspanish_shriek;
+ligtable bbquestion_mark: bbreverse_apostrophe=:bbspanish_query;
+
+% greek encoding
+bbAlpha=hex"41"; bbBeta=hex"42"; bbGamma=hex"47"; bbDelta=hex"44";
+bbEpsilon=hex"45"; bbZeta=hex"5A"; bbEta=hex"48"; bbTheta=hex"4A";
+bbIota=hex"49"; bbKappa=hex"4B"; bbLambda=hex"4C"; bbMu=hex"4D";
+bbNu=hex"4E"; bbXi=hex"58"; bbOmicron=hex"4F"; bbPi=hex"50";
+bbRho=hex"52"; bbSigma=hex"53"; bbTau=hex"54"; bbUpsilon=hex"55";
+bbPhi=hex"46"; bbChi=hex"51"; bbPsi=hex"59"; bbOmega=hex"57";
+boolean variant_Upsilon; variant_Upsilon=false;
+% bbslash_Sigma=hex"9A"; bbnabla=hex"9B"; bbcoprod=hex"9C";
+% bbmho=hex"9D";
+% bbDigamma=hex"E1"; bbKoppa=hex"E2"; bbSampi=hex"E3";
+
+bbalpha=hex"61"; bbbeta=hex"62"; bbgamma=hex"67"; bbdelta=hex"64";
+bbvarepsilon=hex"65"; bbzeta=hex"7A"; bbeta=hex"68"; bbtheta=hex"6A";
+bbiota=hex"69"; bbkappa=hex"6B"; bblambda=hex"6C"; bbmu=hex"6D";
+bbnu=hex"6E"; bbxi=hex"78"; bbomicron=hex"6F"; bbpi=hex"70";
+bbrho=hex"72"; bbsigma=hex"73"; bbtau=hex"74"; bbupsilon=hex"75";
+if variant_f: bbvarphi else: bbphi fi=hex"66"; bbchi=hex"71";
+bbpsi=hex"79"; bbomega=hex"77";
+ %bbvarepsilon=hex"7F"; bbvartheta=hex"BA"; bbvarkappa=hex"BB";
+ %bbvarpi=hex"BC"; bbvarrho=hex"BD";
+bbvarsigma=hex"63";
+% bbvarphi=hex"BF";
+% bbvardigamma=hex"99";
+% bbdigamma=hex"E4"; bbkoppa=hex"E5"; bbsampi=hex"E6"; bbvarkoppa=hex"E7";
+
+% let the show begin :
+
+input mbbgrkup;
+input mbbgrklo;
+input mbbdigit;
+input mbbaccnt;
+input mbbpunct;
+input mbbsymbl;
+
+% parameters for TFM files.
+
+font_slant=slant;
+font_x_height=x_height#;
+font_normal_stretch=3u#;
+font_normal_shrink=2u#;
+font_quad=18u#+4letter_fit#;
+font_extra_space=2u#;
+font_normal_space=6u#+2letter_fit#;
+
+bye. \ No newline at end of file
diff --git a/fonts/mbboard/source/mbbgrklo.mf b/fonts/mbboard/source/mbbgrklo.mf
new file mode 100644
index 0000000000..78a6ddc1de
--- /dev/null
+++ b/fonts/mbboard/source/mbbgrklo.mf
@@ -0,0 +1,875 @@
+% blackboard typefaces by Anthony Phan.
+% file: mbbgrklo.mf (Greek lowercase)
+% last modification: 25.10.2001.
+
+% One can choose to generate some characters or their variants
+% or both when they exist. Characters with no variants will
+% be generated anyway
+% (except ``bbomicron'' which is the same as roman ``o'').
+
+def horizontal_rules_list=
+ -body_depth,-desc_depth,0.5x_height,x_height,cap_height,
+ asc_height,body_height
+enddef;
+
+use_rule1;
+
+iff variant_a:
+beginchar(bbalpha,10u#+2appr#,x_height#,0);
+ "Lowercase Greek alpha";
+ italcorr x_height#*slant-.5u#;
+ path tmppp_path; numeric t[];
+ pickup circle.nib;
+ lft x3=apprl-ho; rt x1=hround((8u#+2appr#)*hppp)-apprr;
+ x2=x4=0.5[x3,x1]; rt x6=w-apprr+hround 0.4u; rt x5=w-apprr;
+ top y2=h+uo; bot y4=-oo; top y5=h; bot y6=bot y7=0;
+ y3=0.5[y4,y2]; y1=0.45[y5,y6]; y8=0.45[y6,y5];
+ x1-x8=hthick; x11-x3=hThick;
+ x7=min(x6-u,x8+(x1-x2)*((y8-y7)/(y2-y1)));
+ tmp_path:=z1 up_to_left z2 left_to_down z3 down_to_right z4;
+ tmpp_path:=z6..z7 left_to_up z8;
+ tmppp_path=z4 right_to_up z5;
+ bbbowl(z2,z3,z4,hThick) tmp_path;
+ hbbowl(z2,z1,(x1,y8),x1-x8) tmp_path;
+ hbbowl(z7,z8,(x8,y1),x1-x8) tmpp_path;
+ t1=xpart(tmppp_path intersectiontimes tmpp_path);
+ t2=xpart(tmppp_path intersectiontimes bowl_path);
+ draw z1..z1 & tmp_path & subpath (0,t1) of tmppp_path;
+ draw subpath (t2,2) of tmppp_path; draw tmpp_path;
+ square_end5(up); square_end6(right);
+ labels(1,2,3,4,5,6,7,8);
+ math_fit(0,0);
+endchar;
+
+iff not variant_a:
+beginchar(bbalpha,10u#+2appr#,x_height#,0);
+ "Lowercase Greek alpha";
+ italcorr x_height#*slant-.5u#;
+ save tmp_path; path tmp_path[]; numeric t[];
+ pickup circle.nib;
+ % cross
+ y10=y9'l=0; y1'=y9r=h; x10=x9r=w-apprr; x1'=x9'l=x10-5u;
+ adjust_slanted_bar(1',10,10',1)(thick,1);
+ adjust_slanted_bar(9'l,9r,9'r,9l)(thin,-1);
+ z9'=0.5[z9'r,z9'l]; z9=0.5[z9r,z9l];
+ % curves
+ top y3=top y12=h+uo; bot y5=-oo; y4=0.5[y3,y5]; lft x4=apprl-ho;
+ slope:=(y1'-y1)/(x1'-x1);
+ hellipse_set(4,3,2,1); hellipse_set(4,12,11,10);
+ slope:=(y9-y9')/(x9-x9'); hellipse_set(4,5,6,9);
+ tmp_path1=z1---z2...z3{left};
+ tmp_path2=z10---z11...z12{left}..z3;
+ tmp_path3=z5{right}...z6---z9;
+ t1=xpart(tmp_path3 intersectiontimes tmp_path1);
+ t2=xpart(tmp_path3 intersectiontimes tmp_path2);
+ z7=point t1 of tmp_path3; z8=point t2 of tmp_path3;
+ tmp_path4=z2{z2-z1}...z3 left_to_down z4 down_to_right z5
+ & subpath (0,t1) of tmp_path3;
+ bbbowl(z3,z4,z5,hThick) tmp_path4;
+ ortho_penpos2(thin,z1'-z1); ortho_penpos11(thin,z10'-z10);
+ ortho_penpos8(thin,z9-z8);
+ penpos1(diag_width(thin,z1'-z1),0);
+ penpos10(diag_width(thin,z10'-z10),0);
+ y1a-y1=thin; z1a-z1=z10a-z10=whatever*(z1'-z1);
+ draw tmp_path4; draw subpath (1,3) of tmp_path2;
+ penstroke z1e..z2e; penstroke z10e..z11e; penstroke z8e..z9e;
+ fill z1a--z10a--z10--z1--cycle;
+ penlabels(1,2,8,9,9',10,11);
+ labels(1',1a,3,4,5,6,7,10',10a);
+ math_fit(0,0);
+endchar;
+
+beginchar(bbbeta,8u#+2appr#,asc_height#,desc_depth#);
+ "Lowercase Greek beta";
+ italcorr 0.8asc_height#*slant-.5u#;
+ pickup circle.nib;
+ lft x1=lft x2=apprl; x3=x5=0.5[x1,x4]; rt x4=w-apprr; rt x6=w-apprr+ho;
+ bot y1=-d; y2=0.5[y5,y4]; top y3=h+oo; y4=0.5[y5,y3]; top y5=x_height;
+ y6=0.5[y7,y5]; x8=x1+hthick;
+ if ab_down_factor>0: bot y7=-oo;
+ x7=ab_down_factor[(x1+x6)/2,(x1+x3+2x6)/4];
+ y8=ab_down_factor[top 0,y5];
+ else: bot y7=bot y8=0; x7=0.5[x1,x6]; fi
+ tmp_path:=z1..z2 up_to_right z3 right_to_down z4 down_to_left z5
+ & z5 right_to_down z6 down_to_left z7
+ if ab_down_factor>0: left_to_up z8 else: ..z8 fi;
+ draw tmp_path;
+ bbbowl(z5,z6,z7,hThick) tmp_path;
+ bbbowl(z3,z4,z5,max(0,x4-x.bowl.mid)) tmp_path;
+ hbbowl(z3,z2,z1,hthick) tmp_path;
+ pickup square.nib draw z1..z.bowl.bot;
+ square_end5(left);
+ labels(1,2,3,4,5,6,7,8);
+ math_fit(0,0);
+endchar;
+
+beginchar(bbgamma,8u#+2appr#,x_height#,desc_depth#);
+ "Lowercase Greek gamma";
+ italcorr x_height#*slant-0.5u#;
+ pickup circle.nib;
+ y1=y12r=h; y2'=y12'l=bot y7=-d-oo;
+ x1=x12'l=apprl; x2'=x12r=w-apprr;
+ adjust_slanted_bar(1,2',2,1')(thick,1);
+ adjust_slanted_bar(12'l,12r,12'r,12l)(thin,-1);
+ z12=0.5[z12r,z12l]; z12'=0.5[z12'r,z12'l];
+ a:=diag_width(thin,z1-z1');
+ penpos1(a,0); penpos2(a,0);
+ y1-y1a=thin; z1-z1a=z2-z2a=whatever*(z1-z1');
+ forsuffixes $=,r,l:
+ z11$=whatever[z2,z2']; z11$=whatever[z12$,z12'$];
+ endfor
+ z10=whatever[z1,z1']; z10=whatever[z12,z12'];
+ x7=0.5[apprl,w-apprr];
+ lft x8=apprl+hround 1.95u; x6-x5=0.5[thin,thick];
+ 0.5[x5,x6]-x7=x7-x8;
+ slope:=(y1'-y1)/(x1'-x1);
+ ellipse_set(7,5,3,1); ellipse_set(7,6,4,2);
+ slope:=(y12'r-y12r)/(x12'r-x12r); ellipse_set(7,8,9,12);
+ ortho_penpos3(thin,z1-z3); ortho_penpos4(thin,z2-z4);
+ draw z4{z4-z2}...z6 down_to_left z7 left_to_up z8...z9--z10;
+ draw z3{z3-z1}...z5 down_to_left z7;
+ penstroke z1e..z3e; penstroke z2e..z4e;
+ penstroke z11e..z12e; fill z1--z2--z2a--z1a--cycle;
+ penlabels(1,2,3,4,14,12,12'); labels(1',1a,2',2a,5,6,7,8,9,10);
+ math_fit(0,0);
+endchar;
+
+%beginchar(bbgamma,8u#+2appr#,x_height#,desc_depth#);
+% "Lowercase Greek gamma";
+% italcorr x_height#*slant-0.5u#;
+% pickup circle.nib;
+% y1=y14r=h; y4=y15l=-0.3d;
+% x1=apprl; x14r=w-apprr;
+% rt x4=rt x6=w-apprr+ho-hround u;
+% x15l=lft x10=apprl+hround u;
+% x8=0.5[x6,x10-hthick/2]; bot y8=-d-oo; x6-x17=hthick;
+% adjust_slanted_bar(1,4,2,3)(thick,1);
+% adjust_slanted_bar(14r,15l,14l,15r)(thin,-1);
+% z13r=whatever[z14r,z15r]; z13l=whatever[z14l,z15l];
+% z13r=whatever[z2,z4]; z13l=whatever[z2,z4];
+% z12=whatever[z1,z3]; z12=whatever[0.5[z14l,z14r],0.5[z15l,z15r]];
+% y1-y1a=thin; z1a=whatever[z1,z3]; z2-z2a=z1-z1a;
+% slope:=(y3-y1)/(x3-x1); ellipse_set(8,6,5,2); ellipse_set(8,17,16,1);
+% slope:=(y15r-y14r)/(x15r-x14r); ellipse_set(8,10,11,12);
+% penpos1(diag_width(thin,z1-z3),0);
+% penpos2(diag_width(thin,z1-z3),0);
+% ortho_penpos5(thin,z2-z5); ortho_penpos16(thin,z1-z16);
+% z7=z6 downleft z8; z9=z8 leftup z10; z18=z17 downleft z8;
+% penstroke z1e..z16e; penstroke z2e..z5e; penstroke z13e..z14e;
+% fill z1--z2--z2a--z1a--cycle;
+% draw z5{z5-z2}...z6{down}...z7{z8-z6}...z8{left}...z9{z10-z8}
+% ...z10{up}...z11---z12;
+% draw z16{z16-z1}...z17{down}...z18{z8-z17}...z8{left};
+% penlabels(1,2,5,,13,14,15,16);
+% labels(1a,2a,3,4,6,7,8,9,10,11,12,17,18);
+% math_fit(0,0);
+%endchar;
+
+beginchar(bbdelta,8u#+2appr#,asc_height#,0);
+ "Lowercase Greek delta";
+ italcorr asc_height#*slant-2u#;
+ pickup circle.nib;
+ top y1=h; y2=y0=y1; bot y10=-oo; y8=y12; y13=y7;
+ bot y6=x_height;
+ x6-x0=6u;
+ rt x1=w-apprr-hround 1.5u; lft x4=apprl+hround u; x2=0.3[x4,x1];
+ x6=x10=0.5[x12,x8]; rt x8=w-apprr+ho; lft x12=apprl-ho;
+ slope:=(y0-y6)/(x0-x6); ellipse_set(2,4,5,6); ellipse_set(10,8,7,6);
+ x15-x12=x8-x17=hThick; x7-x6=x6-x13;
+ tmp_path:=z1..z2 left_to_down z4...z5---z6---z7...z8
+ down_to_left z10 left_to_up z12...z13...z6;
+ z15=tmp_path intersectionpoint ((x15,y10)..(x15,y12));
+ z16=tmp_path intersectionpoint ((x15,y12)..(x15,y6));
+ z17=tmp_path intersectionpoint ((x17,y10)..(x17,y12));
+ z18=tmp_path intersectionpoint ((x17,y8)..(x17,y6));
+ draw tmp_path; draw z15..z16; draw z17..z18;
+ square_end1(right);
+ labels(0,0a,1,2,3,4,5,6,7,8,9,10,11,12,13,14);
+ math_fit(0,0);
+endchar;
+
+iff known bbepsilon:
+beginchar(bbepsilon,6u#+2appr#,x_height#,0);
+ "Lowercase Greek epsilon";
+ italcorr x_height#*slant-.5u#;
+ pickup circle.nib;
+ rt x1=rt x5=w-apprr; top y1=h; x2=0.75[lft x3,rt x1]; y2=y1;
+ lft x3=apprl-ho; bot y3=vround 0.5h; bot y4=bot y5=0; x4=x2;
+ tmp_path:=z1..z2 left_to_down z3 down_to_right z4..z5;
+ draw tmp_path; bbbowl(z2,z3,z4,hThick) tmp_path;
+ z6=bowl_path intersectionpoint (z3..(w,y3));
+ rt x7=hround(w-apprr-0.5u); y7=y3;
+ draw z6..z7;
+ square_end1(right);
+ square_end5(right);
+ square_end7(right);
+ labels(1,2,3,4,5,6,7,8,9);
+ math_fit(0,0);
+endchar;
+
+beginchar(bbzeta,8u#+2appr#,asc_height#,desc_depth#);
+ "Lowercase Greek zeta";
+ italcorr x_height#*slant-2u#;
+ pickup circle.nib;
+ top y1=h; top y2=top y3=top y4=vround(y1-0.25(h-x_height));
+ bot y6=bot y7=0; bot y9=-d;
+ y5=0.3[y6,y4]; y8=0.5[y9,y7];
+ lft x1=apprl+hround 2u; lft x5=apprl-ho;
+ rt x3=w-apprr-hround 1.5u; rt x8=w-apprr+ho;
+ x2=0.7[x1,x3];
+ x4=0.85[x5,x3];
+ x6-x5=x8-x7=0.44(x8-x5);
+ x9=good.x(0.5[x5,x8]);
+ tmp_path:=z1 down_to_right z2..z3 & z3..z4 left_to_down z5
+ down_to_right z6...z7right_to_down z8 down_to_left z9;
+ draw tmp_path;
+ bbbowl(z4,z5,z6,hThick) tmp_path;
+ bbbowl(z7,z8,z9,hThick) tmp_path;
+ square_end1(up);
+ square_end3(right);
+ square_end9(left);
+ labels(1,2,3,4,5,6,7,8,9);
+ math_fit(0,0);
+endchar;
+
+beginchar(bbeta,8u#+2appr#,x_height#,desc_depth#);
+ "Lowercase Greek eta";
+ italcorr 0.75x_height#*slant-.5u#;
+ complete_n;
+ math_fit(0,0);
+endchar;
+
+iff known bbtheta:
+beginchar(bbtheta,8u#+2appr#,asc_height#,0);
+ "Lowercase Greek theta";
+ italcorr 0.6asc_height#*slant+ho#-.5u#;
+ pickup circle.nib;
+ bbcircle1(apprl-ho,w-apprr+ho,h+oo,-oo); draw last_path;
+ bbbowl(z1b,z1a,z1d,hThick) last_path; x2=x.bowl.top;
+ bbbowl(z1b,z1c,z1d,hThick) last_path; x3=x.bowl.top;
+ y2=y3=good.y(0.5[y1b,y1d]); draw z2..z3; labels(2,3);
+ math_fit(0,0);
+endchar;
+
+beginchar(bbiota,6u#+2appr#,x_height#,0);
+ "Lower Greek iota";
+% no italic correction
+ pickup circle.nib;
+ rt x1=w-apprr; x2=0.5[x1,x4]; lft x3=lft x4=apprl;
+ bot y2=-oo; top y4=h; y1=y3=good.y(0.3[y2,y4]);
+ tmp_path:=z1 down_to_left z2 left_to_up z3..z4;
+ draw tmp_path;
+ hbbowl(z2,z3,z4,hthick) tmp_path;
+ pickup square.nib; draw z4..z.bowl.bot;
+ square_end1(up); labels(1,2,3,4,5,6);
+ math_fit(0,0);
+endchar;
+
+iff known bbkappa:
+beginchar(bbkappa,9u#+2appr#,x_height#,0); "Lower Greek kappa";
+ italcorr x_height#*slant-.5u#;
+ pickup circle.nib;
+ lft x1=lft x3=apprl; x2-x1=hthick; x4=x5=x2;
+ bot y1=0; y2=y1; top y3=h; y4=y3;
+ x6r=w-apprr; y6r=h; y5=0.4*h;
+ adjust_slanted_bar(5,6r,5a,6)(0.5thin,-1);
+ z6-z6l=z6r-z6; ortho_penpos5(thin,z6-z5);
+ z7=(w-apprr,0); top z8b=(0.25[x3,x4],h);
+ adjust_slanted_bar(8b,7,7b,8)(thick,1);
+ z9=whatever[z5,z6]; z9=whatever[z7,z7b];
+ z10=whatever[z5,z6]; z10=whatever[z8,z8b];
+ y7a-y7=y8a-y8=thin; z7a=whatever[z7,z7b]; z8a=whatever[z8,z8b];
+ penpos7(diag_width(thin,z7b-z7),0);
+ penpos8(diag_width(thin,z8b-z8),0);
+ ortho_penpos9(thin, z7b-z7); ortho_penpos10(thin, z8b-z8);
+ pickup square.nib; draw z1--z2--z4--z3--cycle;
+ penstroke z5e..z6e; penstroke z7e..z9e; penstroke z8e..z10e;
+ fill z7--z8--z8a--z7a--cycle;
+ labels(1,2,3,4,5a,7a,7b,8a,8b); penlabels(5,6,7,8,9,10);
+ math_fit(0,0);
+endchar;
+
+beginchar(bblambda,9u#+2appr#,asc_height#,0);
+ "Lowercase Greek lambda";
+% no italic correction
+ x1=apprl; x5=w-apprr;
+ y2=y3=max(x_height,0.6h)-0.5thin; y1=y4=y5=0; y6=y7=h;
+ numeric a,x,y; a=(abs(x5-x1)-2y2*slant)/(2y2); y=thick/(2y2);
+ x=thick*(-a*y+sqrt(1+(a**2)-(y**2)))/(1-(y**2));
+ x3-x2=x5-x4=x7-x6=x; x2-x1=x4-x2; z6=whatever[z4,z2];
+ a:=diag_width(thin,z2-z4);
+ penpos1(diag_width(thin,z2-z1),0);
+ penpos4(a,0); penpos5(a,0); penpos6(a,0); penpos7(a,0);
+ forsuffixes $=r,l:
+ z2$-z1$=whatever*(z2-z1); z2$=whatever[z2,z4];
+ endfor
+ y6-y6a=thin; z6-z6a=z7-z7a=z4a-z4=z5a-z5=whatever*(z6-z4);
+ penstroke z1e..z2e; penstroke z4e..z6e; penstroke z5e..z7e;
+ fill z4--z5--z5a--z4a--cycle; fill z6--z7--z7a--z6a--cycle;
+ penlabels(1,2,3,4,5,6,7); labels(4a,5a,6a,7a);
+ math_fit(0,0);
+endchar;
+
+beginchar(bbmu,8u#+2appr#,x_height#,desc_depth#); "Lowercase Greek mu";
+ italcorr x_height#*slant-.5u#;
+ pickup circle.nib;
+ bot y1=0; y2=y1; top y3=h; y4=y3=y7=y8; bot y5=bot y6=-d;
+ rt x1=w-apprr; x3=x1; lft x7=lft x5=apprl;
+ x1-x2=x3-x4=x8-x7=x6-x5=hthick;
+ if uy_factor>0: numeric t;
+ x9=x2; y9=uy_factor[y2,y4]; bot y10=-oo; x10=0.5[x7,0.5[x2,x1]];
+ x11=x7; y11=0.7[y7,y10];
+ tmp_path:=z9 down_to_left z10 left_to_up z11;
+ t=xpart(tmp_path intersectiontimes (z8..z6));
+ z14=point t of tmp_path;
+ draw subpath (0,t) of tmp_path;
+ labels(10,11);
+ else: z9=(x6,y1); draw z2..z9; fi
+ pickup square.nib; draw z1--z2--z4--z3--cycle;
+ draw z5--z6--z8--z7--cycle;
+ labels(0,1,2,3,4,5,6,7,8,9);
+ math_fit(0,0);
+endchar;
+
+beginchar(bbnu,8u#+2appr#,x_height#,0); "Lowercase Greek nu";
+ italcorr x_height#*slant+ho#-.5u#;
+ pickup circle.nib;
+ top y2=h; y2=y3=y6=y7; bot y4=bot y5=0;
+ lft x3=lft x4=apprl; rt x6=w-apprr+ho;
+ x2-x3=hthick; x6-x7=hThick; x5=rt x4;
+ tmp_path:=z5 right_to_up z6;
+ z8=tmp_path intersectionpoint (z7..(x7,y5));
+ z1=tmp_path intersectionpoint (z2..(x2,y5));
+ draw tmp_path; draw z1..z2; draw z7..z8;
+ pickup square.nib; draw z2--z3--z4; draw z6..z7;
+ labels(1,2,3,4,5,6,7,8);
+ math_fit(0,0);
+endchar;
+
+beginchar(bbxi,8u#+2appr#,asc_height#,desc_depth#);
+ "Lowercase Greek xi";
+ italcorr x_height#*slant-2.5u#;
+ pickup circle.nib;
+ top y1=h; top y2=top y3=top y4=vround(y1-0.25(h-x_height));
+ top y6=top y7=top y8=vround 0.5h; bot y10=bot y11=0; bot y13=-d;
+ y5=0.5[y6,y4]; y9=0.4[y10,y8]; y12=0.5[y13,y11];
+ lft x1=apprl+hround 2u; lft x5=apprl; lft x9=apprl-ho;
+ rt x3=rt x7=w-apprr-hround 2u; rt x12=w-apprr+ho;
+ x2=0.7[x1,x3];
+ x4=0.85[x5,x3];
+ x6=0.7[x5,x7];
+ x8=0.8[x9,x7];
+ x10-x9=x12-x11=0.44(x12-x9);
+ x13=good.x 0.5[x9,x12];
+ tmp_path:=z1 down_to_right z2..z3 & z3..z4 left_to_down z5
+ down_to_right z6..z7 & z7..z8 left_to_down z9 down_to_right z10
+ ...z11 right_to_down z12 down_to_left z13;
+ draw tmp_path;
+ bbbowl(z8,z9,z10,hThick) tmp_path;
+ bbbowl(z4,z5,z6,max(0,x.bowl.mid-x5)) tmp_path;
+ bbbowl(z11,z12,z13,hThick) tmp_path;
+ square_end1(up);
+ square_end3(right);
+ square_end7(right);
+ square_end13(left);
+ labels(1,2,3,4,5,6,7,8,9,10,11,12,13);
+ math_fit(0,0);
+endchar;
+
+iff known bbomicron:
+beginchar(bbomicron,8u#+2appr#,x_height#,0); "Lowercase Greek omicron";
+ italcorr 0.6x_height#*slant+ho#-.5u#;
+ pickup circle.nib;
+ bbcircle1(apprl-ho,w-apprr+ho,x_height+uo,-oo); draw last_path;
+ bbbowl(z1b,z1a,z1d,hThick) last_path;
+ bbbowl(z1b,z1c,z1d,hThick) last_path;
+ math_fit(0,0);
+endchar;
+
+iff known bbpi:
+beginchar(bbpi,9u#+2appr#,x_height#,0); "Lowercase Greek pi";
+ italcorr x_height#*slant;
+ pickup circle.nib; top y1=h; apprl-lft x1=rt x2-w+apprr=hround 0.5u;
+ y1=y2=y3=y6=y7=y10; bot y4=0; y4=y5=y8=y9;
+ lft x3-apprl=lft x4-apprl=w-apprr-rt x10=w-apprr-rt x9=hround 0.75u;
+ x10-x7=x9-x8=x6-x3=x5-x4=hthick; pickup square.nib;
+ draw z1..z2; draw z3--z4--z5--z6; draw z7--z8--z9--z10;
+ labels(1,2,3,4,5,6,7,8,9,10);
+ math_fit(0,0);
+endchar;
+
+iff known bbrho:
+beginchar(bbrho,8u#+2appr#,x_height#,desc_depth#);
+ "Lowercase Greek rho";
+ italcorr 0.6x_height#*slant+ho#-.5u#;
+ pickup circle.nib; numeric t;
+ bot y1=-d; top y3=h+uo; bot y5=-oo; y2=y4=0.5[y5,y3];
+ lft x2=lft x1=apprl; rt x4=w-apprr+ho; x3=x5=0.5[x2,x4];
+ tmp_path:=z1..z2 up_to_right z3 right_to_down
+ z4 down_to_left z5 left_to_up z2;
+ bbbowl(z3,z4,z5,hThick) tmp_path;
+ hbbowl(z3,z2,z1,hthick) tmp_path;
+ t=5+xpart(subpath (5,infinity) of tmp_path
+ intersectiontimes bowl_path);
+ draw subpath (0,t) of tmp_path;
+ pickup square.nib; draw z.bowl.bot..z1;
+ penlabels(1,2,3,4,5);
+ math_fit(0,0);
+endchar;
+
+iff known bbsigma:
+beginchar(bbsigma,8u#+2appr#,x_height#,0);
+ "Lowercase Greek sigma";
+ italcorr x_height#*slant+.5u#;
+ pickup circle.nib;
+ rt x1=hround(w-apprr+u); x2=x4=0.5[x3,x5];
+ lft x3=apprl-ho; rt x5=rt x6=w-apprr;
+ top y1=top y2=h; y3=y5=0.5[y4,y2];
+ bot y4=-oo; y6=y1;
+ tmp_path:=z1..z2 left_to_down z3 down_to_right
+ z4 right_to_up z5..z6;
+ draw tmp_path;
+ bbbowl(z2,z3,z4,hThick) tmp_path;
+ hbbowl(z4,z5,z6,hthick) tmp_path;
+ square_end1(right);
+ labels(1,2,3,4,5,6,7,8,9,10);
+ math_fit(0,0);
+endchar;
+
+beginchar(bbtau,7u#+2appr#,x_height#,0);
+ "Lowercase Greek tau";
+ italcorr x_height#*slant;
+ pickup circle.nib; center_bar(1,2); bot y1=bot y2=0;
+ apprl-lft x5=rt x6-w+apprr=hround 0.5u; top y5=top y6=h;
+ z3=(x1,y5); z4=(x2,y5); pickup square.nib; draw z5..z6;
+ draw z3--z1--z2--z4; labels(1,2,3,4,5,6);
+ math_fit(0,0);
+endchar;
+
+beginchar(bbupsilon,8u#+2appr#,x_height#,0);
+ "Lowercase Greek upsilon";
+ italcorr x_height#*slant-.5u#;
+ pickup circle.nib;
+ rt x1=rt x2=w-apprr; lft x4=lft x5=apprl; x3=0.5[x2,x4];
+ top y1=top y5=h; bot y3=-oo; y2=y4=1/3[y3,y1];
+ tmp_path:=z1..z2 down_to_left z3 left_to_up z4..z5;
+ draw tmp_path;
+ hbbowl(z3,z4,z5,hthick) tmp_path;
+ pickup square.nib; draw z5..z.bowl.bot;
+ square_end1(up); labels(1,2,3,4,5);
+ math_fit(0,0);
+endchar;
+
+iff known bbphi:
+beginchar(bbphi,10u#+2appr#,asc_height#,desc_depth#);
+ "Lowercase Greek phi";
+ italcorr 0.6x_height#*slant+ho#-.5u#;
+ center_stem(2,3); bot y2=-d; top y3=h;
+ bbcircle1(apprl-ho,w-apprr+ho,x_height+oo,-oo); draw last_path;
+ bbbowl(z1b,z1a,z1d,hThick) last_path;
+ bbbowl(z1b,z1c,z1d,hThick) last_path;
+ pickup square.nib; draw z2..z3;
+ labels(2,3);
+ math_fit(0,0);
+endchar;
+
+beginchar(bbchi,9u#+2appr#,x_height#,desc_depth#);
+ "Lowercase Greek khi";
+ italcorr x_height#*slant-0.5u#;
+ complete_X(0.35u);
+ math_fit(0,0);
+endchar;
+
+beginchar(bbpsi,10u#+2appr#,asc_height#,desc_depth#);
+ "Lowercase Greek psi";
+ italcorr x_height#*slant-.5u#;
+ center_stem(1,2,6);
+ bot y1=-d; top y2=h;
+ top y4=top y8=x_height; y5=y7=0.5[y4,y6]; bot y6=-oo;
+ lft x4=lft x5=apprl; rt x7=rt x8=w-apprr;
+ tmp_path:=z4..z5 down_to_right z6 right_to_up z7..z8;
+ draw tmp_path;
+ hbbowl(z6,z5,z4,hthick) tmp_path; z3=z.bowl.bot;
+ hbbowl(z6,z7,z8,hthick) tmp_path; z9=z.bowl.bot;
+ pickup square.nib; draw z1..z2; draw z3..z4; draw z8..z9;
+ labels(1,2,3,4,5,6,7,8,9);
+ math_fit(0,0);
+endchar;
+
+beginchar(bbomega,12u#+2appr#,x_height#,0);
+ "Lowercase Greek omega";
+ italcorr 0.6x_height#*slant+ho#-.5u#;
+ center_stem(4,5); top y1=top y8=h; y2=y7=0.42[y3,y1];
+ bot y3=bot y6=-oo; y4=0.35h; top y5=vround(2h/3);
+ lft x2=apprl-ho; rt x7=w-apprr+ho;
+ rt x1=hround max(0.3[lft x2,rt x7],x2+hThick+1.5thin);
+ x1-x2=x7-x8; x3=0.25[x2,x7]; x7-x6=x3-x2; x9-x2=x7-x11=hThick;
+ z1'-z1=(z2-z1) yscaled 1/4; z8'-z8=(z7-z8) yscaled 1/4;
+ tmp_path:=z1{z1'-z1}...z2 down_to_right
+ z3 right_to_up z4 & z4down_to_right z6 right_to_up z7
+ ...z8{z8-z8'};
+ z9=tmp_path intersectionpoint ((x9,y1)..(x9,y2));
+ z10=tmp_path intersectionpoint ((x9,y2)..(x9,y3));
+ z11=tmp_path intersectionpoint ((x11,y1)..(x11,y2));
+ z12=tmp_path intersectionpoint ((x11,y2)..(x11,y3));
+ draw tmp_path; draw z4..z5; draw z9..z10; draw z11..z12;
+ square_end5(up);
+ square_end1(z1-z1');
+ square_end8(z8-z8');
+ labels(range 1 thru 12);
+ math_fit(0,0);
+endchar;
+
+% Variants
+
+iff known bbvarbeta:
+beginchar(bbvarbeta,8u#+2appr#,asc_height#,0);
+ "Lowercase Greek variant beta";
+ italcorr 0.8asc_height#*slant-.5u#;
+ pickup circle.nib;
+ numeric t[];
+ lft x5=lft x9=apprl-ho; rt x7=w-apprr+ho;
+ lft x1=min(apprl+hround(4u/3)-eps,lft x5+hThick);
+ rt x3=w-apprr-hround(u/3)+eps; x2=x4=0.5[x1,x3];
+ x6=x8=0.5[x5,x7];
+ top y4=h+oo; bot y6=-oo; top y8=x_height+oo;
+ y2=good.y 1/3[y8,y4]; y5=0.5[y6,y4];
+ y1=y3=0.5[y2,y4]; y7=y9=0.5[y6,y8];
+ tmp_path:= z1 down_to_right z2 right_to_up z3
+ up_to_left z4 left_to_down z5 down_to_right
+ z6 right_to_up z7 up_to_left z8 left_to_down z9;
+ bbbowl(z4,z5,z6,hThick) subpath (6,infinity) of tmp_path;
+ t1=xpart(subpath (0,4) of tmp_path intersectiontimes bowl_path);
+ t2=12+xpart(subpath (12,16) of tmp_path intersectiontimes bowl_path);
+ draw subpath (t1,t2) of tmp_path;
+ bbbowl(z8,z7,z6,hThick) tmp_path;
+ labels(range 1 thru 15);
+ math_fit(0,0);
+endchar;
+
+iff known bbvarepsilon:
+beginchar(bbvarepsilon,6u#+2appr#,x_height#,0);
+ "Lowercase Greek variant epsilon";
+ italcorr x_height#*slant-.5u#;
+ pickup circle.nib;
+ top y2=h+uo; bot y8=-oo; bot y4=vround 0.5h; y4=y5=y6;
+ y1=0.76[y4,y2]; y9=0.76[y5,y8];
+ y3=0.5[y4,y2]; y7=0.5[y6,y8];
+ rt x1=rt x9=w-apprr; rt x5=w-apprr-hround 1.5u;
+ lft x3=lft x7=apprl-ho; x4=x2; x6=x8; x10-x3=hThick;
+ tmp_path:=reverse elliptic_arc(3,2,1) & z3 down_to_right z4..z5;
+ tmpp_path:=reverse elliptic_arc(7,8,9) & z7 up_to_right z6..z5;
+ bbbowl(z6,z7,z8,hThick) tmpp_path;
+ bbbowl(z2,z3,z4,max(0,x.bowl.mid-x3)) tmp_path;
+ draw tmp_path; draw tmpp_path;
+ square_end1(z1-z1');
+ square_end5(right);
+ square_end9(z9-z9');
+ labels(1,1',2,3,4,5,6,7,8,9,9');
+ math_fit(0,0);
+endchar;
+
+iff known bbvartheta:
+beginchar(bbvartheta,8u#+2appr#,asc_height#,0);
+ "Lowercase Greek variant theta";
+ italcorr 0.7asc_height#*slant+ho#-.5u#;
+ pickup circle.nib; numeric t;
+ top y6=h+oo; bot y4=-oo; rt x5=w-apprr+ho; lft x3=apprl-ho;
+ y3=y2=y5=y9=good.y 0.5[y4,y6]; x4=x6=0.5[x3,x5];
+ x2-x3=hThick; x7=good.x 0[x2,x3]; y7=0.35[y6,y9];
+ rt x9=w-apprr+hround u; z8=z5;
+ tmp_path:=z3 down_to_right z4 right_to_up z5
+ up_to_left z6 left_to_down z7 down_to_right z8;
+ hbbowl(z4,z3,z3,x2-x3) tmp_path;
+ bbbowl(z6,z5,z4,hThick) tmp_path;
+ t=8+xpart(subpath (8,10) of tmp_path intersectiontimes bowl_path);
+ draw subpath (0,t) of tmp_path;
+ y2r=y3r=top y2; y3l=y2l=bot y2; y3a=y2a=y2;
+ x3r=x3a=lft x3; x2r=x2a=rt x2; x2l=x2; x3l=x3;
+ draw z5..z9;
+ fill z3l--z2l--z2a--z2r--z3r--z3a--cycle;
+ square_end9(right);
+ labels(2,3,4,5,6,7,8,9,2a,2l,2r,3a,3l,3r);
+ math_fit(0,0);
+endchar;
+
+iff known bbvarkappa:
+beginchar(bbvarkappa,9u#+2appr#,x_height#,0);
+ "Lowercase Greek variant kappa";
+ italcorr x_height#*slant-0.2u#;
+ pickup circle.nib;
+ x1r=w-apprr+0.3u; x4l=apprl-0.3u; y1r=h; y4l=-d;
+ adjust_slanted_bar(1r,4l,2l,3r)(thick+thin,-1);
+ a:=diag_width(thin,z1r-z3r);
+ penpos1(a,0); penpos2(a,0); penpos3(a,0); penpos4(a,0);
+ y1-y1a=thin; z1a=whatever[z1,z3];
+ z1-z1a=z2-z2a=z3a-z3=z4a-z4;
+ top y5=top y12=h; bot y8=bot y9=0; lft x5=apprl; rt x9=w-apprr;
+ z8=whatever[z2,z4]; z12=whatever[z1,z3];
+ rt x6-apprl=w-apprr-lft x10=hround 3u; slope:=(y1-y3)/(x1-x3);
+ ellipse_set(5,6,7,8); ellipse_set(9,10,11,12);
+ penstroke z1e..z3e; penstroke z2e..z4e;
+ fill z1--z1a--z2a--z2--cycle; fill z3--z3a--z4a--z4--cycle;
+ draw z5 right_to_down z6...z7---z8;
+ draw z9 left_to_up z10...z11---z12;
+ square_end5(left); square_end9(right);
+ penlabels(1,2,3,4); labels(1a,2a,3a,4a,5,6,7,8,9,10,11,12);
+ math_fit(0,0);
+endchar;
+
+iff known bbvarpi:
+beginchar(bbvarpi,12u#+2appr#,x_height#,0);
+ "Lowercase Greek variant pi";
+ italcorr x_height#*slant-.5u#;
+ pickup circle.nib;
+ center_stem(1,4);
+ top y1=h; y1=y7=y8; bot y3=bot y5=-oo;
+ top y4=vround 0.6h; y2=y6=0.4[y3,y1];
+ lft x2+ho=lft x7=apprl; rt x6-ho=rt x8=w-apprr;
+ x3=0.45[x2,x4]; x5=0.45[x6,x4];
+ tmp_path:=z1 left_to_down z2 down_to_right z3 right_to_up z4
+ & z4 down_to_right z5 right_to_up z6 up_to_left z1;
+ draw tmp_path;
+ bbbowl(z1,z2,z3,hThick) tmp_path;
+ bbbowl(z1,z6,z5,hThick) tmp_path;
+ pickup square.nib; draw z7..z8; square_end4(up);
+ labels(1,2,3,4,5,6,7,8,9,10,11,12);
+ math_fit(0,0);
+endchar;
+
+iff known bbvarrho:
+beginchar(bbvarrho,8u#+2appr#,x_height#,desc_depth#);
+ "Lowercase Greek variant rho";
+ italcorr 0.6x_height#*slant+ho#-.5u#;
+ pickup circle.nib; numeric t;
+ rt x1=w-apprr; lft x3=lft x4=apprl; rt x6=w-apprr+ho;
+ x2=x5=x7=0.5[x4,x6];
+ bot y1=bot y2=-d; y3=0; top y5=h+uo; bot y7=-oo;
+ y4=y6=0.5[y7,y5];
+ tmp_path:=z1..z2 left_to_up z3..z4 up_to_right z5
+ right_to_down z6 down_to_left z7 left_to_up z4;
+ hbbowl(z5,z4,z4,hthick) tmp_path;
+ hbbowl(z2,z3,z4,hthick) subpath (0,5) of tmp_path;
+ t=8+xpart(subpath (8,12) of tmp_path intersectiontimes bowl_path);
+ draw subpath (0,t) of tmp_path;
+ bbbowl(z5,z6,z7,hThick) tmp_path;
+ square_end1(right);
+ labels(1,2,3,4,5,6,7);
+ math_fit(0,0);
+endchar;
+
+iff known bbvarsigma:
+beginchar(bbvarsigma,7u#+2appr#,x_height#,desc_depth#);
+ "Lowercase Greek variant sigma";
+ italcorr x_height#*slant-.5u#;
+ pickup circle.nib;
+ top y1=h; y2=0.4[y3,y1]; bot y3=0; y4=0.5[y3,y5]; bot y5=-d;
+ rt x1=w-apprr; lft x2=apprl-ho; rt x4=w-apprr+ho;
+ x3=0.5[x2,x4]; x5=good.x(x3-0.5u);
+ tmp_path:=z1left_to_down z2 down_to_right
+ z3 right_to_down z4 down_to_left z5;
+ draw tmp_path;
+ bbbowl(z1,z2,z3,hThick) tmp_path;
+ bbbowl(z3,z4,z5,hThick) tmp_path;
+ square_end1(right); square_end5(left);
+ labels(1,2,3,4,5,6,7,8,9);
+ math_fit(0,0);
+endchar;
+
+%beginchar(bbvarsigma,7u#+2appr#,x_height#,comma_size#-dot_size#);
+% "Lowercase Greek variant sigma";
+% italcorr x_height#*slant-.5u#;
+% pickup circle.nib;
+% slope:=-x_height/30u;
+% top y1'=top y2=h+oo; bot y8=bot y9'=-d;
+% y5=good.y max(0.5thin,1/3[y8,y2]);
+% rt x1=w-apprr; lft x3=apprl-ho; rt x7=w-apprr+ho;
+% x2=x5=0.5[x3,x7]; x9=good.x(0.5[x3,x7]-0.5u);
+% x8=0.4[x7,x9]; x1'=0.5[x1,x2]; x9'=0.5[x9,x8];
+% x10=x3+hThick; x12=x7-hThick;
+% y1=good.y(y1'+slope*(x1-x1'));
+% y9=good.y(y9'+slope*(x9-x9'));
+% ellipse_set(2,3,4,5); ellipse_set(8,7,6,5);
+% tmp_path:=z1{z1'-z1}...z2 left_to_down
+% z3...z4---z6...z7 down_to_left z8...z9{z9-z9'};
+% z10=tmp_path intersectionpoint ((x10,y3)..(x10,y5));
+% z11=tmp_path intersectionpoint ((x10,y3)..(x10,y2));
+% z12=tmp_path intersectionpoint ((x12,y7)..(x12,y5));
+% z13=tmp_path intersectionpoint ((x12,y7)..(x12,y8));
+% draw tmp_path; draw z10..z11; draw z12..z13;
+% square_end1(z1-z1'); square_end9(z9-z9');
+% labels(1,1',2,3,4,5,6,7,8,9,9',10,11,12,13);
+% math_fit(0,0);
+%endchar;
+
+iff known bbvarphi:
+beginchar(bbvarphi,10u#+2appr#,x_height#,desc_depth#);
+ "Lowercase Greek variant phi";
+ italcorr 0.6x_height#*slant+ho#-.5u#;
+ center_stem(1,2,5); bot y1=-d; y2=0.7[y5,y3];
+ top y3=top y7=h+oo; y4=y6=0.5[y5,y3]; bot y5=-oo;
+ x3=0.3[x2,x4]; rt x4=w-apprr+ho; lft x6=apprl-ho;
+ rt x7=lft x1-hround 0.25u;
+ tmp_path:=z1..z2 up_to_right z3 right_to_down z4
+ down_to_left z5 left_to_up z6 up_to_right z7;
+ draw tmp_path;
+ bbbowl(z7,z6,z5,hThick) tmp_path;
+ bbbowl(z3,z4,z5,hThick) tmp_path;
+ square_end1(down);
+ square_end7(right);
+ labels(1,2,3,4,5,6,7);
+ math_fit(0,0);
+endchar;
+
+% Ionian extension
+% (Carl B. Boyer, ``A History of Mathematics'';
+% Yannis Haralambous and Claus Thull,
+% ``Typesetting Modern Greek with 128 Character Codes''.)
+% One should also cite Sylvio Levy for his talentuous work
+% on Greek letters.
+
+iff known bbdigamma:
+beginchar(bbdigamma,10u#+2appr#,x_height#,desc_depth#);
+ "Lowercase Ionian digamma";
+ italcorr x_height#*slant+.5u#;
+ pickup circle.nib;
+ top y1=vround 0.9h; top y3=h+oo; bot y9=-oo;
+ y5=good.y 0.3[y9,y3]; y7=good.y 0.7[y9,y3];
+ y4=0.42[y5,y3]; y8=.384[y7,y9]; y10=0.3[y9,y5];
+ rt x1=w-apprr+hround u; lft x4=apprl-ho;
+ rt x8=w-apprr-hround u+ho; lft x10=x5;
+ x3=0.5[x4,x8]; z2=0.5[z1,z3]; x5=0.25[x4,x8];
+ x7=0.75[x4,x8]; z6=0.5[z5,z7];
+ tmp_path:=z1{left}...z2{(z3-z1) xscaled 0.5}...z3
+ left_to_down z4 down_to_right z5...z6{(z6-z5) xscaled 1/3}
+ ...z7 right_to_down z8 & elliptic_arc(8,9,10);
+ x16=good.x x9; y16=-d;
+ penpos15(thin*(1++slant),0); penpos16(thin*(1++slant),0);
+ z15=tmp_path intersectionpoint (z16..(x16,y10));
+ draw tmp_path;
+ bbbowl(z3,z4,z5,hThick) tmp_path;
+ bbbowl(z7,z8,z9,hThick) tmp_path;
+ penstroke z15e..z16e;
+ square_end1(right); square_end10(z10-z10');
+ labels(1,2,3,4,5,6,7,8,9,10,10'); penlabels(15,16);
+ math_fit(0,0);
+endchar;
+
+iff known bbkoppa:
+beginchar(bbkoppa,8u#+2appr#,x_height#,desc_depth#);
+ "Lowercase Ionian koppa";
+ italcorr 0.6x_height#*slant+ho#-.5u#;
+ center_stem(2,3); penpos2(thin*(1++slant),0);
+ penpos3(thin*(1++slant),0); y3=-d; y2=y1d;
+ bbcircle1(apprl-ho,w-apprr+ho,x_height+uo,-oo); draw last_path;
+ bbbowl(z1b,z1a,z1d,hThick) last_path;
+ bbbowl(z1b,z1c,z1d,hThick) last_path;
+ penstroke z2e..z3e;
+ penlabels(2,3);
+ math_fit(0,0);
+endchar;
+
+% I won't use it, but I think it would have been nice
+% that `koppa' looked as a reverse `rho'.
+%beginchar(bbkoppa,8u#+2appr#,x_height#,desc_depth#);
+% "Lowercase Ionian koppa";
+% italcorr 0.6x_height#*slant+ho#-.5u#;
+% pickup circle.nib; numeric t;
+% bot y2=bot y3=-d; top y5=h+uo; bot y7=-oo; y4=y6=0.5[y7,y5];
+% rt x4=rt x3=w-apprr; lft x6=apprl-ho; x5=x7=0.5[x4,x6];
+% x3-x2=hthick; x9-x6=hThick;
+% tmp_path:=z3..z4 up_to_left z5 left_to_down
+% z6 down_to_right z7 right_to_up z4;
+% t=xpart(tmp_path intersectiontimes (z2..(x2,y4)));
+% z8=point t of tmp_path;
+% z1=tmp_path intersectionpoint ((x2,y4)..(x2,y5));
+% z9=tmp_path intersectionpoint ((x9,y7)..(x9,y6));
+% z10=tmp_path intersectionpoint ((x9,y6)..(x9,y5));
+% draw subpath (0,t) of tmp_path; draw z1..z2; draw z9..z10;
+% pickup square.nib; draw z2..z3;
+% penlabels(1,2,3,4,5,6,7,8,9,10);
+% math_fit(0,0);
+%endchar;
+
+iff known bbsampi:
+beginchar(bbsampi,10u#+2appr#,asc_height#,0);
+ "Lowercase Ionian sampi";
+ % no italic correction
+ x1=apprl; x5=w-apprr;
+ y2=y3=max(x_height,2h/3)-thin; y1=y4=y5=0; y6=y7=h;
+ numeric a,x,y; a=(abs(x5-x1)-2y2*slant)/(2y2); y=thick/(2y2);
+ x=thick*(-a*y+sqrt(1+(a**2)-(y**2)))/(1-(y**2));
+ x3-x2=x5-x4=x7-x6=x; x2-x1=x4-x2; z6=whatever[z4,z2];
+ a:=diag_width(thin,z2-z4);
+ penpos1(diag_width(thin,z2-z1),0);
+ penpos4(a,0); penpos5(a,0); penpos6(a,0); penpos7(a,0);
+ y6-y6a=thin; z6-z6a=z7-z7a=z4a-z4=z5a-z5=whatever*(z6-z4);
+ z8=0.5[z1,z4]; z9=0.5[z2,z4]; penpos8(diag_width(thin,z9-z8),0);
+ forsuffixes $=l,r:
+ z2$-z1$=whatever*(z2-z1); z2$=whatever[z2,z4];
+ z9$=whatever[z4,z6]; z9$-z8$=whatever*(z9-z8);
+ endfor
+ penstroke z1e..z2e; penstroke z4e..z6e; penstroke z5e..z7e;
+ penstroke z8e..z9e;
+ fill z4--z5--z5a--z4a--cycle; fill z6--z7--z7a--z6a--cycle;
+ penlabels(1,2,3,4,5,6,7,8,9); labels(4a,5a,6a,7a);
+ math_fit(0,0);
+endchar;
+
+iff known bbvardigamma:
+beginchar(bbvardigamma,7.5u#+2appr#,x_height#,desc_depth#);
+ "Lowercase Ionian variant digamma";
+ italcorr x_height#*slant-.5u#;
+ pickup circle.nib; rt x1=w-apprr; lft x2=lft x3=apprl;
+ x4=x5=x3+hthick; lft x6=x4; rt x7=w-apprr-hround u;
+ top y1=top y2=top y5=h; bot y3=bot y4=-d;
+ bot y6=bot y7=vround 0.5(h-d); pickup square.nib;
+ draw z1--z2--z3--z4--z5; draw z6..z7;
+ labels(1,2,3,4,5,6,7);
+ math_fit(0,0);
+endchar;
+
+iff known bbvarkoppa:
+beginchar(bbvarkoppa,8u#+2appr#,asc_height#,desc_depth#);
+ "Lowercase Ionian variant koppa";
+ italcorr 0.4[asc_height#,-desc_depth#]*slant-.5u#;
+ pickup circle.nib;
+ y4r=vround 0.4[-d,h]; y5l+d=h-y4r;
+ bot y1=bot y4=y4r; top y2=top y3=h;
+ top y5=top y6=y5l; bot y7=bot y8=-d;
+ lft x1=lft x2=apprl; rt x6=rt x7=w-apprr;
+ x4-x1=x3-x2=x6-x5=x7-x8=hthick; x4r=rt x4; x5l=lft x5;
+ adjust_slanted_bar(4r,5l,4l,5r)(thin,1);
+ penstroke z4e..z5e; pickup square.nib;
+ draw z1--z2--z3--z4--cycle; draw z5--z6--z7--z8--cycle;
+ labels(1,2,3,6,7,8); penlabels(4,5);
+ math_fit(0,0);
+endchar;
+
+iff known bbslash_lambda:
+beginchar(bbslash_lambda,9u#+2appr#,asc_height#,0);
+ "Slashed lowercase Greek lambda";
+ italcorr x_height#*slant-.5u#;
+ x1=x8=apprl; x5=x11=w-apprr;
+ y2+0.5thin=y3+0.5thin=y8r=y11r=max(x_height,0.6h);
+ y1=y4=y5=0; y6=y7=h;
+ numeric a,x,y; a=(abs(x5-x1)-2y2*slant)/(2y2); y=thick/(2y2);
+ x=thick*(-a*y+sqrt(1+(a**2)-(y**2)))/(1-(y**2));
+ x3-x2=x5-x4=x7-x6=x; x2-x1=x4-x2; z6=whatever[z4,z2];
+ a:=diag_width(thin,z2-z4);
+ penpos1(diag_width(thin,z2-z1),0);
+ penpos4(a,0); penpos5(a,0); penpos6(a,0); penpos7(a,0);
+ forsuffixes $=r,l:
+ z2$-z1$=whatever*(z2-z1); z2$=whatever[z2,z4];
+ endfor
+ y6-y6a=thin; z6-z6a=z7-z7a=z4a-z4=z5a-z5=whatever*(z6-z4);
+ penpos8(thin,90); penpos11(thin,90);
+ forsuffixes $=,r,l:
+ y8$=y9$=y10$; z9$=whatever[z4,z6]; z10$=whatever[z5,z7];
+ endfor
+ penstroke z1e..z2e; penstroke z4e..z6e; penstroke z5e..z7e;
+ penstroke z8e..z9e; penstroke z10e..z11e;
+ fill z4--z5--z5a--z4a--cycle; fill z6--z7--z7a--z6a--cycle;
+ penlabels(1,2,3,4,5,6,7,8,9,10,11); labels(4a,5a,6a,7a);
+ math_fit(0,0);
+endchar; \ No newline at end of file
diff --git a/fonts/mbboard/source/mbbgrkup.mf b/fonts/mbboard/source/mbbgrkup.mf
new file mode 100644
index 0000000000..c1c9ceb4f1
--- /dev/null
+++ b/fonts/mbboard/source/mbbgrkup.mf
@@ -0,0 +1,599 @@
+% blackboard typefaces by Anthony Phan.
+% file: mbbgrkup.mf (Greek uppercase)
+% last modification: 25.10.2001.
+
+% One can choose to generate only Greek uppercase letters
+% which are different from latin (don't define the others' codes).
+% Some Greek-like symbols, defined at the end, obey the same rule.
+
+def horizontal_rules_list=0.4h,0.5h,0.6h,
+ -body_depth,-desc_depth,cap_height,asc_height,body_height
+enddef;
+
+use_rule2;
+
+iff known bbAlpha:
+beginchar(bbAlpha,11.5u#+2appr#,cap_height#,0);
+ "Uppercase Greek Alpha";
+ % no italic correction
+ complete_AV(1,apprl-0.5u,w-apprr+0.5u);
+ pickup circle.nib;
+ z11=whatever[z1,z2];
+ z12=whatever[z5,z6];
+ bot y11=bot y12=vround 0.25h;
+ draw z11..z12;
+ labels(11,12);
+ math_fit(0,0);
+endchar;
+
+iff known bbBeta:
+beginchar(bbBeta,10.15u#+Appr#+appr#,cap_height#,0);
+ "Uppercase Greek Beta";
+ italcorr 0.8cap_height#*slant-0.85u#;
+ pickup circle.nib; bot y4=vround 0.5h;
+ lft x1=lft x9=Apprl; x2=x4=0.56[x1,x3];
+ rt x3=w-apprr-hround 0.35u;
+ x6=x8=0.56[x1,x7]; rt x7=w-apprr; x5=x10=x11=x1+hthick;
+ top y1=top y2=top y11=h; y4=y5=y6; y3=0.5[y2,y4];
+ y7=0.5[y6,y8]; bot y8=bot y9=bot y10=0;
+ x12=max(x7-hThick,x6); x14=min(x12,x3);
+ tmp_path:=z1..z2 right_to_down z3 down_to_left z4..z5
+ &z5..z6 right_to_down z7 down_to_left z8..z9;
+ draw tmp_path; draw z10..z11;
+ bbbowl(z6,z7,z8,hThick) tmp_path;
+ bbbowl(z2,z3,z4,max(0,x3-x.bowl.mid)) tmp_path;
+ pickup square.nib; draw z1..z9;
+ labels(1,2,3,4,5,6,7,8,9,10,11);
+ math_fit(0,0.3cap_height#*slant);
+endchar;
+
+beginchar(bbGamma,7.5u#+Appr#+appr#,cap_height#,0);
+ "Uppercase Greek Gamma";
+ italcorr cap_height#*slant-0.5u#;
+ pickup circle.nib; rt x1=w-apprr; lft x2=lft x3=Apprl;
+ x4=x5=x3+hthick; top y1=top y2=top y5=h; bot y3=bot y4=0;
+ pickup square.nib; draw z1--z2--z3--z4--z5;
+ labels(1,2,3,4,5);
+ math_fit(0,max(0.5cap_height#*slant-0.7u#,0));
+endchar;
+
+beginchar(bbDelta,13u#+2appr#,cap_height#,0);
+ "Uppercase Greek Delta";
+ % no italic correction
+ complete_AV(1,apprl-0.5u,w-apprr+0.5u);
+ y1a-y1=thin; z1a=whatever[z1,z2];
+ fill z1--z5--z5a--z1a--cycle; labels(1a);
+ math_fit(0,0);
+endchar;
+
+iff known bbEpsilon:
+beginchar(bbEpsilon,7.5u#+Appr#+appr#,cap_height#,0);
+ "Uppercase Greek Epsilon";
+ italcorr cap_height#*slant-0.5u#;
+ pickup circle.nib; rt x1=rt x4=w-apprr; lft x2=lft x3=Apprl;
+ x5=x6=lft x7=x3+hthick; rt x8=w-apprr-hround 0.7u;
+ top y1=top y2=top y6=h; bot y3=bot y4=bot y5=0;
+ bot y7=bot y8=floor 0.5h; pickup square.nib;
+ draw z1--z2--z3--z4; draw z5..z6; draw z7..z8;
+ labels(1,2,3,4,5,6,7,8);
+ math_fit(0,max(0.5cap_height#*slant-0.7u#,0));
+endchar;
+
+iff known bbZeta:
+beginchar(bbZeta,10.15u#+2appr#,cap_height#,0);
+ "Uppercase Greek Zeta";
+ italcorr cap_height#*slant-0.5u#;
+ pickup circle.nib;
+ z1l=(apprl-hround 0.2u,0);
+ z2l=(w-apprr+hround 0.2u,0);
+ z3r=(apprl+hround 0.2u,h);
+ z4r=(w-apprr,h);
+ penpos1(thin,90); penpos2(thin,90);
+ penpos3(thin,90); penpos4(thin,90);
+ z5l=z1r; z8r=z4l;
+ adjust_slanted_bar(5l,8r,6r,7l)(thick+thin,-1);
+ a:=diag_width(thin,z8r-z6r);
+ penpos5(a,0); penpos6(a,0); penpos7(a,0); penpos8(a,0);
+ penstroke z1e..z2e; penstroke z3e..z4e;
+ penstroke z5e..z7e; penstroke z6e..z8e;
+ penlabels(1,2,3,4,5,6,7,8);
+ math_fit(0,0.5cap_height#*slant);
+endchar;
+
+iff known bbEta:
+beginchar(bbEta,11u#+2Appr#,cap_height#,0);
+ "Uppercase Greek Eta";
+ italcorr cap_height#*slant-u#;
+ pickup circle.nib;
+ lft x1=lft x3=Apprl; rt x5=rt x7=w-Apprr;
+ x7-x8=x5-x6=x4-x3=x2-x1=hthick;
+ bot y1=0; top y3=h; y1=y2=y5=y6; y3=y4=y7=y8;
+ bot y9=bot y10=floor 0.5h; lft x9=x2; rt x10=x6;
+ draw z9..z10; pickup square.nib; draw z1--z2--z4--z3--cycle;
+ draw z5--z6--z8--z7--cycle; labels(1,2,3,4,5,6,7,8,9,10);
+ math_fit(0,0.5ic#);
+endchar;
+
+beginchar(bbTheta,13u#+2appr#,cap_height#,0);
+ "Uppercase Greek Theta";
+ italcorr 0.6cap_height#*slant-0.5u#;
+ pickup circle.nib;
+ bbcircle1(apprl,w-apprr,h+o,-o);
+ draw last_path;
+ bbbowl(z1b,z1a,z1d,hThick) last_path;
+ lft x.bowl.top-rt x2=hround u;
+ bbbowl(z1b,z1c,z1d,hThick) last_path;
+ lft x3-rt x.bowl.top=hround u;
+ y2=y3=good.y 0.5h;
+ pickup square.nib; draw z2..z3;
+ penlabels(2,3);
+ math_fit(-0.4cap_height#*slant,ic#);
+endchar;
+
+iff known bbIota:
+beginchar(bbIota,hthick#+thin#+2Appr#,cap_height#,0);
+ "Uppercase Greek Iota";
+ italcorr cap_height#*slant-u#;
+ center_bar(1,2) x1=x3; x2=x4;
+ bot y1=bot y2=0; top y3=top y4=h; pickup square.nib;
+ draw z1--z2--z4--z3--cycle; labels(1,2,3,4);
+ math_fit(0,0.5ic#);
+endchar;
+
+iff known bbKappa:
+beginchar(bbKappa,11.5u#+Appr#+appr#,cap_height#,0);
+ "Uppercase Greek Kappa";
+ italcorr cap_height#*slant-0.5u#;
+ pickup circle.nib;
+ lft x1=lft x3=Apprl; x2-x1=hthick; x4=x5=x2;
+ bot y1=0; y2=y1; top y3=h; y4=y3;
+ x6r=w-apprr; y6r=h; y5=0.4h;
+ adjust_slanted_bar(5,6r,5a,6)(0.5thin,-1);
+ z6-z6l=z6r-z6; ortho_penpos5(thin,z6-z5);
+ z7=(w-apprr,0); top z8b=(0.78[x3,x4],h);
+ adjust_slanted_bar(8b,7,7b,8)(thick,1);
+ z9=whatever[z5,z6]; z9=whatever[z7,z7b];
+ z10=whatever[z5,z6]; z10=whatever[z8,z8b];
+ y7a-y7=y8a-y8=thin; z7a=whatever[z7,z7b]; z8a=whatever[z8,z8b];
+ penpos7(diag_width(thin,z7b-z7),0);
+ penpos8(diag_width(thin,z8b-z8),0);
+ ortho_penpos9(thin, z7b-z7); ortho_penpos10(thin, z8b-z8);
+ pickup square.nib; draw z1--z2--z4--z3--cycle;
+ penstroke z5e..z6e; penstroke z7e..z9e; penstroke z8e..z10e;
+ fill z7--z8--z8a--z7a--cycle;
+ labels(1,2,3,4,5a,7a,7b,8a,8b); penlabels(5,6,7,8,9,10);
+ math_fit(0,0);
+endchar;
+
+beginchar(bbLambda,11.5u#+2appr#,cap_height#,0);
+ "Uppercase Greek Lambda";
+ % no italic correction
+ complete_AV(1,apprl-0.5u,w-apprr+0.5u);
+ math_fit(0,0);
+endchar;
+
+iff known bbMu:
+beginchar(bbMu,14u#+2Appr#,cap_height#,0);
+ "Uppercase Greek Mu";
+ italcorr cap_height#*slant-u#;
+ pickup circle.nib;
+ bot y1=0; y1=y6=y7=y11=y12; top y2=h; y2=y3=y9=y10;
+ lft x1=lft x2=Apprl; rt x10=rt x11=w-Apprr;
+ x10-x9=x11-x12=x7-x6=x3-x2=hthick; x6-x1=x12-x7;
+ y6r=y7r=0; y2l=y3l=y8l=h;
+ y2l-y2r=y3l-y3r=y6l-y6r=y7l-y7r=thin;
+ x2l=x2r=x2; x8l=lft x9;
+ adjust_slanted_bar(6,3,4',5')(thick,-1);
+ adjust_slanted_bar(7,8l,7',8')(0.5thin,1);
+ if x4'>x7:
+ z4=whatever[z3,z4']; z4=whatever[z7,z8'];
+ z5=whatever[z1,z2]; z5=whatever[z6,z5'];
+ else: z4=z4'; z5=z5'; fi
+ ortho_penpos4(thin,z4'-z3);
+ ortho_penpos5(thin,z6-z5');
+ ortho_penpos8(thin,z8'-z7);
+ forsuffixes $=r,l:
+ z3$-z4$=whatever*(z3-z4);
+ z7$-z8$=whatever*(z7-z8);
+ z6$-z5$=whatever*(z6-z5);
+ endfor;
+ penstroke z2e--z3e--z4e; penstroke z5e--z6e--z7e--z8e;
+ pickup square.nib; draw z1..z2; draw z9--z10--z11--z12--cycle;
+ penlabels(2,3,4,5,6,7,8); labels(1,4',5',7'8',9,10,11,12);
+ math_fit(0,0.5ic#);
+endchar;
+
+iff known bbNu:
+beginchar(bbNu,10.7u#+2Appr#,cap_height#,0);
+ "Uppercase Greek Nu";
+ italcorr cap_height#*slant-u#;
+ pickup circle.nib;
+ bot y1=0; y1=y6=y7; top y2=h; y2=y3=y5;
+ lft x1=lft x2=Apprl; rt x5=rt x6=w-Apprr;
+ x3-x2=x6-x7=hthick; penpos2(thin,-90); penpos6(thin,90);
+ y3l=h; y7l=0; y3l-y3r=y7r-y7l=thin;
+ adjust_slanted_bar(3,7,8a,4a)(thick,-1);
+ if x8a>x2: z8=z8a; else: x8=x2; z8=whatever[z7,z8a]; fi
+ if x4a<x6: z4=z4a; else: x4=x6; z4=whatever[z3,z4a]; fi
+ ortho_penpos4(thin,z4-z3); ortho_penpos8(thin,z8-z7);
+ z8r-z7r=whatever*(z8-z7); z8l-z7l=whatever*(z8-z7);
+ z4r-z3r=whatever*(z4-z3); z4l-z3l=whatever*(z4-z3);
+ penstroke z2e--z3e--z4e; penstroke z6e--z7e--z8e;
+ pickup square.nib; draw z1..z2; draw z5..z6;
+ labels(1,5,4a,8a); penlabels(2,3,4,6,7,8);
+ math_fit(0,0.5ic#);
+endchar;
+
+iff known bbOmicron:
+beginchar(bbOmicron,13u#+2appr#,cap_height#,0);
+ "Uppercase Greek Omicron";
+ italcorr 0.6cap_height#*slant-0.5u#;
+ pickup circle.nib;
+ bbcircle1(apprl,w-apprr,h+o,-o);
+ draw last_path;
+ bbbowl(z1b,z1a,z1d,hThick) last_path;
+ bbbowl(z1b,z1c,z1d,hThick) last_path;
+ math_fit(-0.4cap_height#*slant,ic#);
+endchar;
+
+beginchar(bbPi,11u#+2Appr#,cap_height#,0);
+ "Uppercase Greek Pi";
+ italcorr cap_height#*slant-u#;
+ pickup circle.nib;
+ lft x3=Apprl; bot y3=-d; top y4=h; x4=x3; x1=x2=x3+hthick;
+ y2=y7=y6=y3; y1=y8=y5=y4; rt x6=w-Apprr; x5=x6; x7=x8=x6-hthick;
+ pickup square.nib; draw z1--z2--z3--z4--z5--z6--z7--z8;
+ labels(1,2,3,4,5,6,7,8);
+ math_fit(0,0.5ic#);
+endchar;
+
+iff known bbRho:
+beginchar(bbRho,10.15u#+Appr#+appr#,cap_height#,0);
+ "Uppercase Greek Rho";
+ italcorr 0.8cap_height#*slant-0.5u#;
+ pickup circle.nib;
+ lft x1=lft x3=Apprl; rt x6=w-apprr; x2-x1=x4-x3=hthick;
+ x5=0.50[x1,x6]; x7=0.50[x1,x6]; x8=x2;
+ bot y1=bot y2=0; top y3=top y4=top y5=h;
+ bot y7=bot y8=vround 0.4h; y6=0.5[y5,y7];
+ tmp_path:=z3..z5 right_to_down z6 down_to_left z7..z8;
+ draw tmp_path;
+ bbbowl(z5,z6,z7,hThick) tmp_path;
+ pickup square.nib; draw z4--z2--z1--z3;
+ labels(1,2,3,4,5,6,7,8);
+ math_fit(0,0.4cap_height#*slant-u#);
+endchar;
+
+beginchar(bbXi,11u#+2appr#,cap_height#,0);
+ "Uppercase Greek Xi";
+ italcorr cap_height#*slant-0.5u#;
+ pickup circle.nib;
+ lft x1=apprl; top y1=h; rt x2=w-apprr; y2=y1; bot y3=0; x3=x1;
+ x4=x2; y4=y3; bot y5=bot y6=floor 0.5h;
+ lft x5-apprl=w-apprr-rt x6=hround u;
+ pickup square.nib; draw z1..z2; draw z3..z4; draw z5..z6;
+ labels(1,2,3,4,5,6);
+ math_fit(0,0);
+endchar;
+
+beginchar(bbSigma,11.5u#+2appr#,cap_height#,0);
+ "Uppercase Greek Sigma";
+ italcorr cap_height#*slant-0.5u#;
+ pickup circle.nib;
+ x1=x3=w-apprr; top y1=h; y2=y1; x2=x4=apprl; bot y3=0; y4=y3;
+ penpos1(thin,90); penpos2(thin,90);
+ penpos3(thin,90); penpos4(thin,90);
+ z0=(floor(2/3[x2,x1])+0.5,floor(h/2)+0.5);
+ z5l=z4r; z6r=z0; adjust_slanted_bar(5l,6r,5r,7)(thin,-1);
+ z8l=z2l; z11r=z0; adjust_slanted_bar(8l,11r,9r,12)(thin+thick,1);
+ z6l=whatever[z5l,z7]; z6l=whatever[z9r,z11r];
+ a:=diag_width(thin,z9r-z11r);
+ penpos8(a,0); penpos9(a,0);
+ z10l=whatever[z8l,z12]; z10l=whatever[0.5[z5l,z5r],0.5[z6l,z6r]];
+ z10r=z8r+whatever*(z8l-z12); z10r=whatever[0.5[z5l,z5r],0.5[z6l,z6r]];
+ z11l=z9l+whatever*(z8l-z12); z11l=whatever[z5r,z6r];
+ penstroke z1e..z2e; penstroke z3e..z4e; penstroke z5e..z6e;
+ penstroke z8e..z10e; penstroke z9e..z11e;
+ penlabels(0,1,2,3,4,5,6,7,8,9,10,11,12);
+ math_fit(0,0);
+endchar;
+
+iff known bbTau:
+beginchar(bbTau,10.2u#+2appr#,cap_height#,0);
+ "Uppercase Greek Tau";
+ italcorr cap_height#*slant;
+ center_bar(1,2); bot y1=bot y2=0; top y5=top y6=h;
+ lft x5=apprl-hround 0.5u; rt x6=w-apprr+hround 0.5u;
+ z3=(x1,y5); z4=(x2,y5); pickup square.nib;
+ draw z5..z6; draw z3--z1--z2--z4; labels(1,2,3,4,5,6);
+ math_fit(-0.5cap_height#*slant,
+ cap_height#*slant-2.5u#);
+endchar;
+
+iff known bbUpsilon:
+beginchar(bbUpsilon,11u#+2appr#,cap_height#,0);
+ "Uppercase Greek Upsilon";
+ italcorr cap_height#*slant;
+ center_bar(6,3); x3=x4; x5=x6;
+ lft x1=apprl-hround 0.5u; rt x9=w-apprr+hround 0.5u;
+ x7=0.15[x1,x6]; x8=0.15[x9,x3]; x3-x2=x5-x7;
+ bot y4=bot y5=0; y3=y6=0.6h; top y1=h;
+ y1=y2=y7=y8=y9;
+ draw z1..z2 right_to_down z3..z4;
+ draw z1..z7 right_to_down z6..z5;
+ draw z9..z8 left_to_down z3;
+ pickup square.nib; draw z4..z5;
+ square_end1(left);
+ square_end9(right);
+ labels(1,2,3,4,5,6,7,8,9);
+ math_fit(-0.5cap_height#*slant+0.5u#,cap_height#*slant-2.5u#);
+endchar;
+
+% a modifier
+iff known bbvarUpsilon:
+beginchar(bbvarUpsilon,10.2u#+2appr#,cap_height#,0);
+ "Uppercase Greek variant Upsilon";
+ italcorr cap_height#*slant-0.5u#;
+ center_bar(3,4); bot y3=bot y4=-d;
+ x3l=apprl+hround(0.5(w-apprr-apprl-hthick-thin*(1++slant)));
+ x4l-x3l=hround(hthick+thin*(1++slant));
+ x3r-x3l=x4l-x4r=thin*(1++slant);
+ y4l=y3l=-d; y3r-y3l=y4r-y4l=thin;
+ y1=y6=y7r=h; x1=apprl; x7r=w-apprr;
+ x2=x3; y2=y5a=0.5h; x6-x1=x5a-x2=diag_width(thick,z1-z2);
+ a:=diag_width(thin,z1-z2);
+ penpos1(a,0); penpos6(a,180); z8=z5;
+ forsuffixes $=,r,l: x5$=x4$; z5$-z6$=whatever*(z2-z1); endfor
+ forsuffixes $=r,l: x2$=x3$; z2$-z1$=whatever*(z2-z1); endfor
+ y1-y1a=y6-y6a=thin; z1a=whatever[z1,z2]; z6a=whatever[z6,z5a];
+ adjust_slanted_bar(7r,8,7,8a)(0.5thin,-1); z7-z7l=z7r-z7;
+ ortho_penpos8(thin,z7-z8);
+ penstroke z1e--z2e--z3e--z4e--z5e--z6e;
+ fill z1--z6--z6a--z1a--cycle; penstroke z7e..z8e;
+ penlabels(1,2,3,4,5,6,7,8,9,10); labels(1a,5a,6a,8a);
+ math_fit(0,0);
+endchar;
+
+beginchar(bbPhi,13u#+2appr#,cap_height#,0);
+ "Uppercase Greek Phi";
+ italcorr 0.6cap_height#*slant-0.5u#;
+ center_bar(1,2); x1=x3; x2=x4;
+ lft x6=apprl; rt x9=w-apprr; x5=x7=x1; x8=x10=x2;
+ bot y1=bot y2=0; top y3=top y4=h; y6=y9=0.5[y5,y7];
+ top y7=top y10=vround(0.85h); bot y5=bot y8=vround(0.15h);
+ tmp_path:=z5 left_to_up z6 up_to_right z7;
+ tmpp_path:=z8 right_to_up z9 up_to_left z10;
+ draw tmp_path; draw tmpp_path;
+ bbbowl(z7,z6,z5,hThick) tmp_path;
+ bbbowl(z10,z9,z8,hThick) tmpp_path;
+ pickup square.nib; draw z1--z2--z4--z3--cycle;
+ labels(1,2,3,4,5,6,7,8,9,10);
+ math_fit(0,0);
+endchar;
+
+iff known bbChi:
+beginchar(bbChi,12u#+2appr#,cap_height#,0);
+ "Uppercase Greek Chi";
+ italcorr cap_height#*slant-0.5u#;
+ complete_X(0.375u);
+ math_fit(0,0);
+endchar;
+
+beginchar(bbPsi,12u#+2appr#,cap_height#,0);
+ "Uppercase Greek Psi";
+ italcorr cap_height#*slant-0.5u#;
+ pickup circle.nib;
+ center_bar(1,2); x5=x3=x1; x9=x4=x2;
+ lft x6=lft x7=apprl; rt x10=rt x11=w-apprr;
+ bot y1=bot y2=0; top y3=h; y3=y4=y7=y11;
+ bot y5=bot y9=vround 0.3h; y6=y10=0.5[y5,y7];
+ tmp_path:=z5 left_to_up z6..z7;
+ tmpp_path:=z9 right_to_up z10..z11;
+ draw tmp_path; draw tmpp_path;
+ hbbowl(z5,z6,z7,hthick) tmp_path; z8=z.bowl.bot;
+ hbbowl(z9,z10,z11,hthick) tmpp_path; z12=z.bowl.bot;
+ pickup square.nib; draw z1--z2--z4--z3--cycle;
+ draw z7..z8; draw z11..z12;
+ labels(1,2,3,4,5,6,7,8,9,10,11,12);
+ math_fit(0,0);
+endchar;
+
+beginchar(bbOmega,13u#+2appr#,cap_height#,0);
+ "Uppercase Greek Omega";
+ italcorr 0.6cap_height#*slant-0.5u#;
+ pickup circle.nib;
+ z0=(-20u,h);
+ y1l=y2l=y11l=y10l=0;
+ x1l-apprl=w-apprr-x11l=hround 0.8u;
+ x2l-x1l=x11l-x10l=ceiling 4.1u;
+ penpos1(thin,90); penpos2(thin,90);
+ penpos10(thin,90); penpos11(thin,90);
+ z3r=z2r; z9l=z10r;
+ lft x5=apprl; rt x7=w-apprr; x6=0.5[x5,x7];
+ top y6=h+o;
+ ortho_penpos3(thin,z0); ortho_penpos9(thin,(-x0,y0));
+ ortho_penpos4(thin,z0); ortho_penpos8(thin,(-x0,y0));
+ slope:=y0/x0; ellipse_set(6,5,4,3);
+ slope:=-y0/x0; ellipse_set(6,7,8,9);
+ tmp_path:= z4{z0}...z5 up_to_right z6
+ right_to_down z7...{x0,-y0}z8;
+ x12-x5=x7-x14=hThick;
+ if x12>x4: z12=whatever[z3,z4];
+ else: z12=tmp_path intersectionpoint ((x12,y1)..(x12,y5)); fi
+ if x14<x8: z14=whatever[z8,z9];
+ else: z14=tmp_path intersectionpoint ((x14,y11)..(x14,y7)); fi
+ z13=tmp_path intersectionpoint ((x12,y5)..(x12,y6));
+ z15=tmp_path intersectionpoint ((x14,y7)..(x14,y6));
+ draw tmp_path; draw z12..z13; draw z14..z15;
+ penstroke z1e..z2e; penstroke z3e..z4e;
+ penstroke z8e..z9e; penstroke z10e..z11e;
+ penlabels(1,2,3,4,8,9,10,11); labels(5,6,,7,12,13,14,15);
+ math_fit(0,0);
+endchar;
+
+% Ionian extension
+% (Carl B. Boyer, ``A History of Mathematics'';
+% Yannis Haralambous and Claus Thull,
+% ``Typesetting Modern Greek with 128 Character Codes''.)
+
+iff known bbDigamma:
+beginchar(bbDigamma,7.5u#+Appr#+appr#,cap_height#,0);
+ "Uppercase Ionian Digamma";
+ italcorr cap_height#*slant-0.5u#;
+ pickup circle.nib; rt x1=w-apprr; lft x2=lft x3=Apprl;
+ x4=x5=x3+hthick; lft x6=x4; rt x7=w-apprr-hround 0.7u;
+ top y1=top y2=top y5=h; bot y3=bot y4=0;
+ y6=y7=good.y 0.5h; pickup square.nib;
+ draw z1--z2--z3--z4--z5; draw z6..z7;
+ labels(1,2,3,4,5,6,7);
+ math_fit(0,max(0.5cap_height#*slant-0.7u#,0));
+endchar;
+
+iff known bbKoppa:
+beginchar(bbKoppa,10.15u#+Appr#+appr#,cap_height#,0);
+ "Uppercase Ionian Koppa";
+ italcorr cap_height#*slant-u#;
+ pickup circle.nib;
+ rt x1=rt x3=w-Apprr; lft x6=apprl; x2-x1=x4-x3=-hthick;
+ x5=0.5[x1,x6]; x7=0.5[x1,x6]; x8=x2;
+ bot y1=bot y2=0; top y3=top y4=top y5=h;
+ bot y7=bot y8=vround 0.4h; y6=0.5[y5,y7];
+ tmp_path:=z3..z5 right_to_down z6 down_to_left z7..z8;
+ draw tmp_path;
+ bbbowl(z5,z6,z7,hThick) tmp_path;
+ pickup square.nib;
+ draw z4--z2--z1--z3; labels(1,2,3,4,5,6,7,8);
+ math_fit(-0.5cap_height#*slant,0.5ic#);
+endchar;
+
+iff known bbSampi:
+beginchar(bbSampi,13u#+2appr#,cap_height#,0);
+ "Uppercase Ionian Sampi";
+ % no italic correction
+ complete_AV(1,apprl-0.5u,w-apprr+0.5u);
+ z7=0.5[z5,z2]; z8=0.5[z5,z1];
+ penpos8(diag_width(thin,z7-z8),0);
+ z7l=whatever[z2,z5]; z7r=whatever[z2,z5];
+ z7l-z8l=whatever*(z7-z8); z7r-z8r=whatever*(z7-z8);
+ penstroke z7e..z8e; penlabels(7,8);
+ math_fit(0,0);
+endchar;
+
+% Esoteric characters based on Greek designs.
+
+% I've meet the following character in:
+% Rogers (L. C. G.), Williams (D.),
+% "Diffusions, Markov Processes and Martingales",
+% Vol. 1, 2nd Edition, Wiley (1994), p. 74--77
+% (very good book),
+% where it appears in Times roman or Times greek.
+% I suppose it's the Greek version of the dollar sign.
+
+iff known bbslash_Sigma:
+beginchar(bbslash_Sigma,11.5u#+2appr#,
+ cap_height#+0.5desc_depth#,0.5desc_depth#);
+ "The slashed letter Sigma";
+ italcorr cap_height#*slant-0.5u#;
+ pickup circle.nib;
+ x1=x3=w-apprr; top y1=cap_height; y2=y1;
+ x2=x4=apprl; bot y3=0; y4=y3;
+ penpos1(thin,90); penpos2(thin,90);
+ penpos3(thin,90); penpos4(thin,90);
+ z0=(floor(2/3[x2,x1])+0.5,floor(0.5cap_height)+0.5);
+ z5l=z4r; z6r=z0; adjust_slanted_bar(5l,6r,5r,7)(thin,-1);
+ z8l=z2l; z11r=z0; adjust_slanted_bar(8l,11r,9r,12)(thin+thick,1);
+ z6l=whatever[z5l,z7]; z6l=whatever[z9r,z11r];
+ z5=0.5[z5l,z5r];
+ a:=diag_width(thin,z9r-z11r);
+ penpos8(a,0); penpos9(a,0);
+ z10l=whatever[z8l,z12]; z10l=whatever[0.5[z5l,z5r],0.5[z6l,z6r]];
+ z10r=z8r+whatever*(z8l-z12); z10r=whatever[0.5[z5l,z5r],0.5[z6l,z6r]];
+ z11l=z9l+whatever*(z8l-z12); z11l=whatever[z5r,z6r];
+ penstroke z1e..z2e; penstroke z3e..z4e; penstroke z5e..z6e;
+ penstroke z8e..z10e; penstroke z9e..z11e;
+ x13=x14=x15=x16=good.x 0.5[x1,x2];
+ top y13=h; bot y16=-d; z15=whatever[z5,0.5[z0,z6l]];
+ if x9>x14: y14=y1; else: z14=whatever[z9,0.5[z0,z11l]]; fi
+ draw z13..z14; draw z15..z16;
+ square_end13(up); square_end16(down);
+ penlabels(0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16);
+ math_fit(0,0);
+endchar;
+
+iff known bbnabla:
+beginchar(bbnabla,13u#+2appr#,cap_height#,0);
+ "Uppercase Greek nabla";
+ italcorr cap_height#*slant;
+ complete_AV(-1,apprl-0.5u,w-apprr+0.5u);
+ y1-y1a=thin; z1a=whatever[z1,z2];
+ fill z1--z5--z5a--z1a--cycle; labels(1a);
+ math_fit(-0.5cap_height#*slant,cap_height#*slant-2.25u#);
+endchar;
+
+iff known bbslash_nabla:
+beginchar(bbslash_nabla,13u#+2appr#,
+ cap_height#+0.5desc_depth#,0.5desc_depth#);
+ "Uppercase Greek slash nabla";
+ italcorr cap_height#*slant;
+ begingroup save h,d; h=cap_height; d=0;
+ complete_AV(-1,apprl-0.5u,w-apprr+0.5u);
+ endgroup;
+ y1-y1a=thin; z1a=whatever[z1,z2];
+ fill z1--z5--z5a--z1a--cycle;
+ z7'=1/3[z1r,z5l]; y7=-d; y10=h; z7'-z7=whatever*(z1-z2);
+ z10-z7=whatever*(z1-z2);
+ forsuffixes $=r,l:
+ z7$-z7=z10$-z10=z1$-z1;
+ z8$=whatever[z7$,z10$]; z8$=whatever[z3,z4];
+ z9$=whatever[z7$,z10$]; z9$=whatever[z2,z5];
+ endfor
+ penstroke z7e..z8e; penstroke z9e..z10e;
+ penlabels(7,8,9,10); labels(1a,7');
+ math_fit(-0.5cap_height#*slant,cap_height#*slant-2.25u#);
+endchar;
+
+iff known bbcoprod:
+beginchar(bbcoprod,11u#+2Appr#,cap_height#,0);
+ "Coproduct symbol";
+ italcorr cap_height#*slant-u#;
+ pickup circle.nib;
+ lft x3=Apprl; bot y3=-d; top y4=h; x4=x3; x1=x2=x3+hthick;
+ y2=y7=y6=y3; y1=y8=y5=y4; rt x6=w-Apprr; x5=x6; x7=x8=x6-hthick;
+ pickup square.nib; draw z2--z1--z4--z3--z6--z5--z8--z7;
+ labels(1,2,3,4,5,6,7,8);
+ math_fit(0,0.5ic#);
+endchar;
+
+iff known bbmho:
+beginchar(bbmho,13u#+2appr#,cap_height#,0);
+ "Uppercase Greek mho";
+ italcorr cap_height#*slant-1.3u#;
+ pickup circle.nib;
+ z0=(20u,h);
+ y1l=y2l=y11l=y10l=h;
+ x1l-apprl=w-apprr-x11l=hround 0.8u;
+ x2l-x1l=x11l-x10l=ceiling 4.1u;
+ penpos1(thin,-90); penpos2(thin,-90);
+ penpos10(thin,-90); penpos11(thin,-90);
+ z3r=z2r; z9l=z10r;
+ lft x5=apprl; rt x7=w-apprr; x6=0.5[x5,x7];
+ bot y6=-o;
+ ortho_penpos3(thin,z0); ortho_penpos9(thin,(-x0,y0));
+ ortho_penpos4(thin,z0); ortho_penpos8(thin,(-x0,y0));
+ slope:=y0/x0; ellipse_set(6,5,4,3);
+ slope:=-y0/x0; ellipse_set(6,7,8,9);
+ tmp_path:= z4{-z0}...z5 down_to_right z6
+ right_to_up z7...{-x0,y0}z8;
+ x12-x5=x7-x14=hThick;
+ if x12>x4: z12=whatever[z3,z4];
+ else: z12=tmp_path intersectionpoint ((x12,y1)..(x12,y5)); fi
+ if x14<x8: z14=whatever[z8,z9];
+ else: z14=tmp_path intersectionpoint ((x14,y11)..(x14,y7)); fi
+ z13=tmp_path intersectionpoint ((x12,y5)..(x12,y6));
+ z15=tmp_path intersectionpoint ((x14,y7)..(x14,y6));
+ draw tmp_path; draw z12..z13; draw z14..z15;
+ penstroke z1e..z2e; penstroke z3e..z4e;
+ penstroke z8e..z9e; penstroke z10e..z11e;
+ penlabels(1,2,3,4,8,9,10,11); labels(5,6,,7,12,13,14,15);
+ math_fit(-0.4cap_height#*slant,ic#);
+endchar;
diff --git a/fonts/mbboard/source/mbbheb10.mf b/fonts/mbboard/source/mbbheb10.mf
new file mode 100644
index 0000000000..192eaca1e6
--- /dev/null
+++ b/fonts/mbboard/source/mbbheb10.mf
@@ -0,0 +1,27 @@
+% blackboard typefaces by Anthony Phan.
+% file: mbbheb10.mf (parameters' file for 10 points Hebrew fonts)
+% last modification: 25.10.2001.
+
+if unknown mbbbase: input mbbbase fi
+
+font_identifier:="mbbheb"; font_size 10pt#;
+
+slant:=0;
+square_dots:=false;
+math_fitting:=false;
+variant_a:=false; variant_f:=false;
+variant_g:=false; variant_y:=false;
+old_digits:=true; square_hebrew:=false;
+ab_up_factor:=0; ab_down_factor:=0;
+hmn_factor:=0; uy_factor:=0;
+
+input mbblight;
+input mbbhebdr;
+
+
+
+
+
+
+
+
diff --git a/fonts/mbboard/source/mbbhebdr.mf b/fonts/mbboard/source/mbbhebdr.mf
new file mode 100644
index 0000000000..d182e26324
--- /dev/null
+++ b/fonts/mbboard/source/mbbhebdr.mf
@@ -0,0 +1,79 @@
+% blackboard typefaces by Anthony Phan.
+% file: mbbhebdr.mf (Hebrew driver file)
+% last modification: 25.10.2001.
+
+mode_setup; font_setup;
+font_coding_scheme:="mbb Hebrew font";
+% well... or not well at all
+
+% Activate to allow characters with undefined code.
+% (for proof mode compilation)
+
+%let iff=always_iff;
+
+% hebrew encoding
+
+numeric bbhebr[],bbhebvow[],bbhebmas[];
+for i=0 upto 26: bbhebr[i]=hex"50"+i; endfor
+for i=27 upto 31: bbhebr[i]=hex"70"+i-27; endfor
+% go up to 29 to add ligatures
+% ligtable bbhebr[5]: bbhebr[5]=:bbhebr[27];
+% ligtable bbhebr[9]:bbhebr[5]=:bbhebr[28],bbhebr[9]=:bbhebr[29];
+for i=0 upto 31: bbhebmas[i]=hex"10"+i; endfor
+for i=0 upto 20: bbhebvow[i]=hex"30"+i; endfor
+% symbols encoding
+
+bbshereq:=hex"6F";
+
+% let the show begin :
+
+dagesh_accent:=hex"10";
+ligtable dagesh_accent:
+bbhebr[0]=:bbhebr[0]+48,
+bbhebr[1]=:bbhebr[1]+48,
+bbhebr[2]=:bbhebr[2]+48,
+bbhebr[3]=:bbhebr[3]+48,
+bbhebr[4]=:bbhebr[4]+48,
+bbhebr[5]=:bbhebr[5]+48,
+bbhebr[6]=:bbhebr[6]+48,
+bbhebr[7]=:bbhebr[7]+48,
+bbhebr[8]=:bbhebr[8]+48,
+bbhebr[9]=:bbhebr[9]+48,
+bbhebr[10]=:bbhebr[10]+48,
+bbhebr[11]=:bbhebr[11]+48,
+bbhebr[12]=:bbhebr[12]+48,
+bbhebr[13]=:bbhebr[13]+48,
+bbhebr[14]=:bbhebr[14]+48,
+bbhebr[15]=:bbhebr[15]+48,
+bbhebr[16]=:bbhebr[16]+48,
+bbhebr[17]=:bbhebr[17]+48,
+bbhebr[18]=:bbhebr[18]+48,
+bbhebr[19]=:bbhebr[19]+48,
+bbhebr[20]=:bbhebr[20]+48,
+bbhebr[21]=:bbhebr[21]+48,
+bbhebr[22]=:bbhebr[22]+48,
+bbhebr[23]=:bbhebr[23]+48,
+bbhebr[24]=:bbhebr[24]+48,
+bbhebr[25]=:bbhebr[25]+48,
+bbhebr[26]=:bbhebr[26]+48;
+
+input mbbsymbl;
+input mbbhebrw;
+dagesh_mark:=true;
+for i=0 upto 26: bbhebr[i]:=hex"80"+i; endfor
+input mbbhebrw;
+input mbbhebvw;
+input mbbhebma;
+%input mbbextra;
+
+% parameters for TFM files.
+
+font_slant=slant;
+font_x_height=x_height#;
+font_normal_stretch=3u#;
+font_normal_shrink=2u#;
+font_quad=18u#+4letter_fit#;
+font_extra_space=2u#;
+font_normal_space=6u#+2letter_fit#;
+
+end.
diff --git a/fonts/mbboard/source/mbbhebma.mf b/fonts/mbboard/source/mbbhebma.mf
new file mode 100644
index 0000000000..8da46c5770
--- /dev/null
+++ b/fonts/mbboard/source/mbbhebma.mf
@@ -0,0 +1,349 @@
+% blackboard typefaces by Anthony Phan.
+% file: mbbhebma.mf (Hebrew masoteric accents)
+% last modification: 25.10.2001.
+
+diacritics_proofing;% changes extra_endchar for proof mode.
+
+def horizontal_rules_list=
+ -body_depth,-paren_depth,-desc_depth,
+ x_height,cap_height,asc_height,body_height
+enddef;
+
+use_rule1;
+
+beginchar(bbhebmas[1],8u#+2appr#,0,bot_skip#+
+ if square_dots: heb_size1# else: heb_size2# fi);
+ "Hebrew accent etnahta";
+ if square_dots:
+ if not(odd(w-apprl-apprr)): change_width; fi
+ x2r=0.5[apprl,w-apprr]; x3r-x1r=hround 6u; 0.5[x3r,x1r]=x2r;
+ y2r=-bot_skip+0.5; y1r=y3r=-d;
+ z1l-z1r=(diag_width(thin,z2r-z1r),0);
+ z3l-z3r=(-diag_width(thin,z2r-z3r),0);
+ z2l-z1l=whatever*(z2r-z1r); z2l-z3l=whatever*(z2r-z3r);
+ penstroke z1e--z2e--z3e; penlabels(1,2,3);
+ else: center_stem(2,4); top y4=-bot_skip; bot y1=bot y3=-d;
+ y2=good.y 0.5[y4,y1]; x2-x1=x3-x2=hround 3u;
+ draw z1 up_to_right z2 right_to_down z3; draw z2..z4;
+ square_end1(down); square_end3(down);
+ square_end4(up); labels(1,2,3,4);
+ fi
+endchar;
+
+beginchar(bbhebmas[2],8u#+2appr#,x_height#+top_skip#+heb_size2#,0);
+ "Hebrew accent segol";
+ center_bar(3,3');
+ lft x1-apprl=w-apprr-rt x2'=hround 0.5u; x1'-x1=x2'-x2=hthick;
+ bot y1=top y3'-heb_size2=x_height+top_skip; y2=y1;
+ top y1'-bot y1=top y2'-bot y2=top y3'-bot y3=dot_size;
+ dot(1,1'); dot(2,2'); dot(3,3');
+endchar;
+
+beginchar(bbhebmas[3],8u#+2appr#,x_height#+top_skip#+heb_size2#,0);
+ "Hebrew accent shalshelet";
+ numeric a,b; a=vround 0.2(heb_size2-2thin);
+ b=hround max(3thin,4u);
+ x1l=x1r=x3l=x5l=hround(0.5[apprl,w-apprr]-0.5b);
+ x2r=x4r=x6r=x6l=x1l+b; x7l=x7r=x6r+hround 0.5u;
+ y2r-y1l=y3l-y2r=y4r-y3l=y5l-y4r=y6r-y5l=a;
+ y1l=x_height+top_skip+thin+0.5;
+ adjust_slanted_bar(1l,2r,1a,2b)(thin,-1);
+ adjust_slanted_bar(2r,3l,2a,3b)(thin,1);
+ adjust_slanted_bar(3l,4r,3a,4b)(thin,-1);
+ adjust_slanted_bar(4r,5l,4a,5b)(thin,1);
+ adjust_slanted_bar(5l,6r,5a,6b)(thin,-1);
+ z1r=whatever[z1a,z2r];
+ z2l=whatever[z1l,z2b]; z2l=whatever[z3l,z2a];
+ z3r=whatever[z2r,z3b]; z3r=whatever[z4r,z3a];
+ z4l=whatever[z3l,z4b]; z4l=whatever[z5l,z4a];
+ z5r=whatever[z4r,z5b]; z5r=whatever[z6r,z5a];
+ z6l=whatever[z5l,z6b];
+ z7r=whatever[z5r,z6r]; z7l=whatever[z5l,z6l];
+ penstroke z1e--z2e--z3e--z4e--z5e--z7e;
+ penlabels(1,2,3,4,5,6,7);
+ labels(1a,2a,2b,3a,3b,4a,4b,5a,5b,6b);
+endchar;
+
+beginchar(bbhebmas[4],8u#+2appr#,x_height#+top_skip#+heb_size2#,0);
+ "Hebrew accent zaqef qatan";
+ center_bar(1,1'); x2=x1; x2'=x1';
+ bot y1=top y2'-heb_size2=x_height+top_skip;
+ top y1'-bot y1=top y2'-bot y2=dot_size;
+ dot(1,1'); dot(2,2');
+endchar;
+
+beginchar(bbhebmas[5],8u#+2appr#,x_height#+top_skip#+heb_size2#,0);
+ "Hebrew accent zaqef gadol";
+ pickup circle.nib; a:=max(u,1.5thin,0.5(hthick+thin));
+ lft x1=lft x2=vround(0.5[apprl,w-apprr]+a-0.5(hthick+thin));
+ x3=x4=good.x(0.5[apprl,w-apprr]-a); x1'-x1=x2'-x2=hthick;
+ bot y1=top y4-heb_size2=x_height+top_skip; y1=y3; y2'=y4;
+ top y1'-bot y1=top y2'-bot y2=dot_size; dot(1,1'); dot(2,2');
+ pickup square.nib; draw z3..z4; labels(3,4);
+endchar;
+
+beginchar(bbhebmas[6],8u#+2appr#,0,top_skip#+heb_size1#);
+ "Hebrew accent tipeha";
+ complete_hebrew_club(0.5[apprl,w-apprr],-bot_skip,-d,1);
+endchar;
+
+% okay sauf la hauteur.
+beginchar(bbhebmas[7],8u#+2appr#,x_height#+top_skip#+dot_size#,0);
+ "Hebrew accent revia";
+ if not(odd(w-apprl-apprr)): change_width; fi
+ x0=0.5[apprl,w-apprr];
+ y0=x_height+top_skip+vround 0.5dot_size+0.5;
+ x3r-x1r=sqrt 2*(thick+thin)*(1++slant);
+ y2r-y4r=sqrt2*dot_size;
+ x0=x2r=x4r=0.5[x3r,x1r]; y0=y1r=y3r=0.5[y2r,y4r];
+ z1a-z1r=(diag_width(thin,z2r-z1r),0);
+ z1b-z1r=(diag_width(thin,z4r-z1r),0);
+ z3a-z3r=(-diag_width(thin,z2r-z3r),0);
+ z3b-z3r=(-diag_width(thin,z4r-z3r),0);
+ z2l-z1a=whatever*(z2r-z1r); z2l-z3a=whatever*(z2r-z3r);
+ z4l-z1b=whatever*(z4r-z1r); z4l-z3b=whatever*(z4r-z3r);
+ z2l-z1l=whatever*(z2r-z1r); z4l-z1l=whatever*(z4r-z1r);
+ z2l-z3l=whatever*(z2r-z3r); z4l-z3l=whatever*(z4r-z3r);
+ penstroke z1e--z2e--z3e--z4e--cycle;
+ penlabels(1,2,3,4,1',2',3',4'); labels(1a,1b,2a,2b);
+endchar;
+
+beginchar(bbhebmas[8],8u#+2appr#,x_height#+top_skip#+heb_size1#,0);
+ "Hebrew accent zarqa";
+ pickup circle.nib;
+ a:=max(6u,5thin);
+ bot y1=x_height+top_skip; y1=y6; top y8=h; y8=y3;
+ y0=y2=y7=0.5[y1,y8]; rt x7=hround(0.5[apprl,w-apprr]-0.5a);
+ rt x7-lft x2=hround a; x0=0.5[x2,x7]; slope:=-heb_size1/2u;
+ hellipse_set(2,3,4,0); hellipse_set(7,6,5,0);
+ x1=good.x x3; x8=good.x x6;
+ draw z1 left_to_up z2 up_to_right z3...z4---z5
+ ...z6 right_to_up z7 up_to_left z8;
+ square_end1(right); square_end8(left);
+ labels(0,1,2,3,4,5,6,7,8);
+endchar;
+
+beginchar(bbhebmas[9],8u#+2appr#,x_height#+top_skip#+heb_size1#,0);
+ "Hebrew accent pashta";
+ complete_hebrew_club(apprl,x_height+top_skip,h,-1);
+endchar;
+
+% almost okay
+beginchar(bbhebmas[10],8u#+2appr#,0,bot_skip#+heb_size1#);
+ "Hebrew accent yetiv";
+ y2r=0.5[y1,y3]=-vround(0.5[bot_skip,d])-0.5; y1-y3=heb_size1;
+ x1=w-apprr+hround u; x1-x2r=hround 6u; x1=x1r=x3=x3r;
+ adjust_slanted_bar(2r,1,2a,1a)(0.5(thin),-1);
+ adjust_slanted_bar(2r,3,2b,3b)(0.5(thin),1);
+ z1r=whatever[z2r,z1a]; z3r=whatever[z2r,z3b];
+ z1r-z1=z1-z1l; z3r-z3=z3-z3l;
+ z2l-z1l=whatever*(z2r-z1r); z2l-z3l=whatever*(z2r-z3r);
+ penstroke z1e--z2e--z3e;
+ penlabels(1,2,3); labels(1a,2a,2b,3b);
+endchar;
+
+beginchar(bbhebmas[11],8u#+2appr#,0,bot_skip#+heb_size1#);
+ "Hebrew accent tevir";
+ pickup circle.nib;
+ complete_hebrew_club(0.5[apprl,w-apprr],
+ -bot_skip,-bot_skip-heb_size1,-1);
+ top y4'=-bot_skip; top y4'-bot y4=dot_size;
+ lft x4=x1l; x4'-x4=hthick; dot(4,4');
+endchar;
+
+beginchar(bbhebmas[12],8u#+2appr#,x_height#+top_skip#+heb_size1#,0);
+ "Hebrew accent geresh";
+ complete_hebrew_club(0.5[apprl,w-apprr],x_height+top_skip,h,1);
+endchar;
+
+beginchar(bbhebmas[13],8u#+2appr#,x_height#+top_skip#+heb_size1#,0);
+ "Hebrew accent geresh muqdam";
+ complete_hebrew_club(w-apprr,x_height+top_skip,h,1);
+endchar;
+
+beginchar(bbhebmas[14],8u#+2appr#,x_height#+top_skip#+heb_size1#,0);
+ "Hebrew accent gershayim";
+ a:=0.5max(5u,1.5hthick+thin,3thin)+1.5u;
+ complete_hebrew_club(0.5[apprl,w-apprr]-0.5a,x_height+top_skip,h,1);
+ complete_hebrew_club'(0.5[apprl,w-apprr]+0.5a,x_height+top_skip,h,1);
+endchar;
+
+beginchar(bbhebmas[15],8u#+2appr#,x_height#+top_skip#+heb_size1#,0);
+ "Hebrew accent qarney para";
+ pickup circle.nib;
+ a:=hround max(5u,hthick*sqrt 2+thin+dot_skip);
+ x2=hround(0.5[apprl,w-apprr]+0.5a); x2-x8=a;
+ 0.5[x1,x3]=x2=x4; 0.5[x7,x9]=x8=x10;
+ x1-x3=x7-x9=2hround(hthick/sqrt 2)+2eps;
+ top y2=h+o; 0.5[y2,y4]=y1=y3=y7=y9; y8=y2; y10=y4;
+ top y2-bot y4=2vround(dot_size/sqrt 2)+2eps;
+ tmp_path:=superellipse(z1,z2,z3,z4,superness);
+ tmpp_path:=superellipse(z7,z8,z9,z10,superness);
+ y6=x_height+top_skip; x6=0.5[x2,x8];
+ z5=tmp_path intersectionpoint ((x2,y1)..z6);
+ z11=tmpp_path intersectionpoint ((x8,y7)..z6);
+ ortho_penpos5(thin,z6-z5); ortho_penpos11(thin,z11-z6);
+ z6r-z5r=whatever*(z6-z5); z6r-z11r=whatever*(z6-z11);
+ z6l-z5l=whatever*(z6-z5); z6l-z11l=whatever*(z6-z11);
+ draw tmp_path; draw tmpp_path; penstroke z5e--z6e--z11e;
+ labels(1,2,3,4,7,8,9,10); penlabels(5,6,11);
+endchar;
+
+beginchar(bbhebmas[16],8u#+2appr#,x_height#+top_skip#+heb_size1#,0);
+ "Hebrew accent telisha gedola";
+ pickup circle.nib;
+ 0.5[x1,x3]=x2=x4=w-apprr; x1-x3=2hround(hthick/sqrt 2)+2eps;
+ top y2=h+o; 0.5[y2,y4]=y1=y3;
+ top y2-bot y4=2vround(dot_size/sqrt 2)+2eps;
+ tmp_path:=superellipse(z1,z2,z3,z4,superness);
+ y6=x_height+top_skip; rt x1-x6=5u;
+ z5=tmp_path intersectionpoint ((x2,y1)..z6);
+ ortho_penpos5(thin,z6-z5);
+ z6r-z6=z6-z6l=whatever*((z6-z5)rotated 90);
+ z6r-z5r=whatever*(z6-z5);
+ draw tmp_path; penstroke z5e..z6e;
+ labels(1,2,3,4); penlabels(5,6);
+endchar;
+
+beginchar(bbhebmas[17],8u#+2appr#,x_height#+top_skip#+heb_size1#,0);
+ "Hebrew accent pazer";
+ a:=hround max(3thin,4u);
+ lft x2=hround(0.5[apprl,w-apprr]-0.5a); x2=x3=x4; rt x1-lft x2=a;
+ bot y3=x_height+top_skip; y4-y1=y1-y3;
+ y1=y2=good.y(x_height+top_skip+0.5heb_size1);
+ pickup square.nib; draw z1..z2; draw z3..z4; labels(1,2,3,4);
+endchar;
+
+beginchar(bbhebmas[19],8u#+2appr#,0,bot_skip#+heb_size1#);
+ "Hebrew accent munah";
+ pickup circle.nib;
+ a:=hround max(3thin,4u);
+ rt x2=rt x3=hround(0.5[apprl,w-apprr]+0.5a); rt x2-lft x1=a;
+ top y3=-bot_skip; bot y1=bot y2=-d;
+ pickup square.nib; draw z1--z2--z3; labels(1,2,3);
+endchar;
+
+beginchar(bbhebmas[20],8u#+2appr#,0,bot_skip#+heb_size1#);
+ "Hebrew accent mahapakh";
+ y2r=0.5[y1,y3]=-vround(0.5[bot_skip,d])-0.5; y1-y3=heb_size1;
+ x1=hround(0.5[apprl,w-apprr]+3u); x1-x2r=hround 6u; x1=x1r=x3=x3r;
+ adjust_slanted_bar(2r,1,2a,1a)(0.5(thin),-1);
+ adjust_slanted_bar(2r,3,2b,3b)(0.5(thin),1);
+ z1r=whatever[z2r,z1a]; z3r=whatever[z2r,z3b];
+ z1r-z1=z1-z1l; z3r-z3=z3-z3l;
+ z2l-z1l=whatever*(z2r-z1r); z2l-z3l=whatever*(z2r-z3r);
+ penstroke z1e--z2e--z3e;
+ penlabels(1,2,3); labels(1a,2a,2b,3b);
+endchar;
+
+beginchar(bbhebmas[21],8u#+2appr#,0,bot_skip#+heb_size1#);
+ "Hebrew accent merkha";
+ complete_hebrew_club(0.5[apprl,w-apprr],-bot_skip,-d,-1);
+endchar;
+
+beginchar(bbhebmas[22],8u#+2appr#,0,bot_skip#+heb_size1#);
+ "Hebrew accent kefula";
+ a:=0.5max(5u,1.5hthick+thin,3thin)+1.5u;
+ complete_hebrew_club(0.5[apprl,w-apprr]-0.5a,-bot_skip,-d,-1);
+ complete_hebrew_club'(0.5[apprl,w-apprr]+0.5a,-bot_skip,-d,-1);
+endchar;
+
+beginchar(bbhebmas[23],8u#+2appr#,0,bot_skip#+heb_size2#);
+ "Hebrew accent darga";
+ a:=hround max(6u,1.5hthick+1.5thin);
+ x2l=x4r=hround(0.5[apprl,w-apprr]-0.5a); x1l=x3r=x2l+a;
+ y1l=y2l=-d; y3r=y4r=-bot_skip;
+ penpos1(thin,90); penpos2(thin,90);
+ penpos3(thin,90); penpos4(thin,90);
+ z5l=z1r; z8r=z4l;
+ adjust_slanted_bar(5l,8r,6r,7l)(thick+thin,+1);
+ a:=-diag_width(thin,z8r-z6r);
+ penpos5(a,0); penpos6(a,0); penpos7(a,0); penpos8(a,0);
+ penstroke z1e..z2e; penstroke z3e..z4e;
+ penstroke z5e..z7e; penstroke z6e..z8e;
+ penlabels(1,2,3,4,5,6,7,8);
+endchar;
+
+beginchar(bbhebmas[24],8u#+2appr#,x_height#+top_skip#+heb_size1#,0);
+ "Hebrew accent qadma";
+ complete_hebrew_club(0.5[apprl,w-apprr],x_height+top_skip,h,-1);
+endchar;
+
+beginchar(bbhebmas[25],8u#+2appr#,x_height#+top_skip#+heb_size1#,0);
+ "Hebrew accent telisha qetana";
+ complete_hebrew_club(apprl,h,x_height+top_skip,1);
+endchar;
+
+beginchar(bbhebmas[26],8u#+2appr#,0,bot_skip#+
+ if square_dots: heb_size1# else: heb_size2# fi);
+ "Hebrew accent yera ben yomo";
+ if square_dots:
+ if not(odd(w-apprl-apprr)): change_width; fi
+ x2r=0.5[apprl,w-apprr]; x3r-x1r=hround 6u; 0.5[x3r,x1r]=x2r;
+ y2r=-d-0.5; y1r=y3r=-bot_skip;
+ z1l-z1r=(diag_width(thin,z2r-z1r),0);
+ z3l-z3r=(-diag_width(thin,z2r-z3r),0);
+ z2l-z1l=whatever*(z2r-z1r); z2l-z3l=whatever*(z2r-z3r);
+ penstroke z1e--z2e--z3e; penlabels(1,2,3);
+ else: center_stem(2,4); top y1=top y3=-bot_skip; bot y4=-d;
+ y2=good.y 0.5[y4,y1]; x2-x1=x3-x2=hround 3u;
+ draw z1 down_to_right z2 right_to_up z3; draw z2..z4;
+ square_end1(up); square_end3(up);
+ square_end4(down); labels(1,2,3,4);
+ fi
+endchar;
+
+beginchar(bbhebmas[27],8u#+2appr#,x_height#+top_skip#+heb_size1#,0);
+ "Hebrew accent ole";
+ y2r=0.5[y1,y3]=vround(0.5[x_height+top_skip,h])+0.5; y1-y3=heb_size1;
+ x1=hround(0.5[apprl,w-apprr]+3u); x1-x2r=hround 6u; x1=x1r=x3=x3r;
+ adjust_slanted_bar(2r,1,2a,1a)(0.5(thin),-1);
+ adjust_slanted_bar(2r,3,2b,3b)(0.5(thin),1);
+ z1r=whatever[z2r,z1a]; z3r=whatever[z2r,z3b];
+ z1r-z1=z1-z1l; z3r-z3=z3-z3l;
+ z2l-z1l=whatever*(z2r-z1r); z2l-z3l=whatever*(z2r-z3r);
+ penstroke z1e--z2e--z3e;
+ penlabels(1,2,3); labels(1a,2a,2b,3b);
+endchar;
+
+beginchar(bbhebmas[28],8u#+2appr#,x_height#+top_skip#+heb_size1#,0);
+ "Hebrew accent iluy";
+ pickup circle.nib;
+ a:=hround max(3thin,4u);
+ rt x2=rt x3=hround(0.5[apprl,w-apprr]+0.5a); rt x2-lft x1=a;
+ top y3=h; bot y1=bot y2=x_height+top_skip;
+ pickup square.nib; draw z1--z2--z3; labels(1,2,3);
+endchar;
+
+beginchar(bbhebmas[29],8u#+2appr#,0,bot_skip#+heb_size1#);
+ "Hebrew accent dehi";
+ complete_hebrew_club(w-apprr,-bot_skip,-d,1);
+endchar;
+
+beginchar(bbhebmas[30],8u#+2appr#,x_height#+top_skip#+heb_size1#,0);
+ "Hebrew accent zinor";
+ pickup circle.nib;
+ a:=max(6u,5thin);
+ bot y1=x_height+top_skip; y1=y6; top y8=h; y8=y3;
+ y0=y2=y7=0.5[y1,y8]; lft x2=hround(0.5[apprl,w-apprr]-0.5a);
+ rt x7-lft x2=hround a; x0=0.5[x2,x7]; slope:=-heb_size1/2u;
+ hellipse_set(2,3,4,0); hellipse_set(7,6,5,0);
+ x1=good.x x3; x8=good.x x6;
+ draw z1 left_to_up z2 up_to_right z3...z4---z5
+ ...z6 right_to_up z7 up_to_left z8;
+ square_end1(right); square_end8(left);
+ labels(0,1,2,3,4,5,6,7,8);
+endchar;
+
+beginchar(bbhebmas[31],8u#+2appr#,x_height#+top_skip#+heb_size1#,0);
+ "Hebrew mark masora circle";
+ pickup circle.nib;
+ if odd(w-apprl-apprr): change_width; fi
+ 0.5[x1,x3]=x2=x4=0.5[apprl,w-apprr];
+ x1-x3=2hround(hthick/sqrt 2)+2eps;
+ 0.5[y2,y4]=y1=y3=x_height+top_skip+vround 0.5dot_size;
+ top y2-bot y4=2vround(dot_size/sqrt 2)+2eps;
+ draw superellipse(z1,z2,z3,z4,superness); labels(1,2,3,4);
+endchar;
+
+standard_proofing;% restore extra_endchar. \ No newline at end of file
diff --git a/fonts/mbboard/source/mbbhebrw.mf b/fonts/mbboard/source/mbbhebrw.mf
new file mode 100644
index 0000000000..30ce8fc3e9
--- /dev/null
+++ b/fonts/mbboard/source/mbbhebrw.mf
@@ -0,0 +1,795 @@
+% blackboard typefaces by Anthony Phan.
+% file: mbbhebrw.mf (Hebrew letters)
+% last modification: 25.10.2001.
+
+% Originally, this file was intented to generate only
+% usual Hebrew letters together with their final forms.
+% Designs with dagesh diacritic mark appeared to be
+% necessary for three reasons (the two firsts are not
+% good reasons but the last one is truly a good one):
+% Yannis Haralambous in his quadratic Hebrew font
+% did so. In the book of Fraenkel on set theory, such
+% symbols are used. And last, no correct placement of
+% the dagesh can be done by TeX mechanism. So it deserves
+% a particular treatment.
+% Furthermore, nobody can imagine placing an accent in the middle
+% of a lead plate...
+% A last remark: dagesh can overlap the underlying glyph,
+% especially when dots are squares. But I don't care too much
+% of that.
+
+def horizontal_rules_list=0.4h,0.5h,0.6h,
+ -body_depth,-desc_depth,cap_height,asc_height,body_height
+enddef;
+
+use_rule2;
+
+% special parameters
+
+hebrew_flare#:=1/3cap_height#;
+hebrew_jut#:=2u#; yod_jut#:=0.75u#;
+define_whole_vertical_pixels(hebrew_flare);
+define_whole_pixels(hebrew_jut,yod_jut);
+
+top_skip#:=bot_skip#:=0.1cap_height#;
+define_whole_vertical_pixels(top_skip,bot_skip);
+heb_size1#:=max(asc_height#-top_skip#-x_height#,dot_size#+dot_skip#+thin#);
+heb_size2#:=max(body_height#-top_skip#-x_height#,2dot_size#+dot_skip#);
+heb_size1:=max(asc_height-top_skip-x_height,dot_size+dot_skip+thin);
+heb_size2:=max(body_height-top_skip-x_height,2dot_size+dot_skip);
+
+% special macros
+
+vardef complete_hebrew_curve@#(expr lshift,rshift,$,squared_end)=
+ pickup circle.nib;
+ top y1@#=top y2@#=h; lft x1@#=apprl+hround lshift;
+ rt x3@#=rt x4@#=w-apprr-hround rshift;
+ x2@#=max(0.25[x1@#,x3@#],rt x3@#-6u);
+ y3@#=$[max(0,-d),h]; bot y4@#=-d;
+ tmp_path:=z1@#..z2@# right_to_down z3@#..z4@#;
+ draw tmp_path; hbbowl(z2@#,z3@#,z4@#,hthick) tmp_path;
+ pickup square.nib; draw z4@#--z.bowl.bot;
+ if squared_end: square_end1@#(left); fi
+ labels(1@#,2@#,3@#,4@#);
+enddef;
+
+vardef complete_dagesh@#(expr x_mid,y_mid)=
+ if dagesh_mark:
+ pickup circle.nib; x@#=good.x(x_mid-0.5hthick);
+ x@#'-x@#=hthick; bot y@#=vround(y_mid-0.5dot_size);
+ top y@#'-bot y@#=dot_size; dot(@#,@#');
+ fi
+enddef;
+
+if dagesh_mark: tmp_string:=" with dagesh";
+else: tmp_string:=""; fi
+
+vardef complete_hebrew_club@#(expr x_mid,y_top,y_bot,$)=
+ save a; a=hround max(5u,1.5hthick+thin,3thin);
+ y1@#l=y2@#l=y_bot; y2@#r=y1@#r; y3@#l=y_top;
+ penpos1@#(thin,if y_top<y_bot: - fi 90);
+ x1@#l-x3@#l=if $<0: - fi a;
+ x1@#l=hround(x_mid if $<0: - else: + fi 0.5a);
+ x2@#r=0.5[x1@#r,x3@#l];
+ adjust_slanted_bar(3@#l,2@#r,3@#r,2@#a)
+ (thin,if y_top<y_bot: - fi $);
+ z2@#l=whatever[z3@#l,z2@#a]; penstroke z1@#e--z2@#e--z3@#e;
+ penlabels(1@#,2@#,3@#);
+enddef;
+
+% Hebrew letters
+
+iff known dagesh_accent:
+beginchar(dagesh_accent,appr#+hthick#+thin#+dot_skip#-appr#,cap_height#,0);
+ "Hebrew dagesh accent";
+ italcorr 0.5(cap_height#+dot_size#)*slant-dot_skip#+0.5u#;
+ complete_dagesh1(apprl+0.5(hthick+thin),0.5h);
+endchar;
+
+beginchar(bbhebr0,12u#+2appr#,cap_height#,0);
+ "Hebrew letter alef (0)"& tmp_string;
+ italcorr cap_height#*slant-0.5u#;
+ pickup circle.nib;
+ x1l=apprl-0.4u; x4r=w-apprr+0.4u; y1l=h; y4r=-d;
+ adjust_slanted_bar(1l,4r,2r,3l)(thick+thin,1);
+ numeric a,t; a=diag_width(thin,z1l-z3l);
+ penpos1(a,0); penpos2(a,0); penpos3(a,0); penpos4(a,0);
+ y1-y1a=thin; z1-z1a=z2-z2a=z3a-z3=z4a-z4=whatever*(z1-z3);
+ penstroke z1e..z3e; penstroke z2e..z4e;
+ fill z1--z2--z2a--z1a--cycle; fill z3--z4--z4a--z3a--cycle;
+ lft x5=apprl; rt x10=w-apprr; x8-x5=x10-x13=hThick;
+ bot y5=bot y8=0; top y10=top y13=h;
+ x6=0.5[x3,x3a]; x11=0.5[x2,x2a];
+ h-top y6=bot y11=hebrew_flare;
+ z6=z5 upright z6; z12=z10 downleft z11;
+ tmp_path:=z5 up_to_right z6;
+ tmpp_path:=z10 down_to_left z11;
+ t=xpart(tmp_path intersectiontimes (z1..z3));
+ z7=point t of tmp_path;
+ z12=point t of tmpp_path;
+ if x7>x8: z9=tmp_path intersectionpoint (z8..(x8,y6));
+ else: x9=x8; z9=whatever[z1,z3]; fi
+ x14=w+apprl-apprr-x9; y14=h-y9;
+ draw subpath (0,t) of tmp_path; draw z8..z9;
+ draw subpath (0,t) of tmpp_path; draw z13..z14;
+ z5a=lft z5; z8a=rt z8; z10a=rt z10; z13a=lft z13;
+ z5r=top z5; z8r=top z8; z10r=bot z10; z13r=bot z13;
+ y5l=y8l=0; y10l=y13l=h; x5l=x5a; x8l=x8a; x10l=x10a; x13l=x13a;
+ fill z5l--z8l--z8a--z8r--z5r--z5a--cycle;
+ fill z10l--z13l--z13a--z13r--z10r--z10a--cycle;
+ labels(1a,2a,3a,4a,5a,6,6,7,8a,10a,11,12,13a,14);
+ penlabels(1,2,3,4,5,8,10,13);
+ complete_dagesh15(0.5[x8,x3+0.5dot_size*(x1-x3)/h],0.5dot_size);
+ math_fit(0,0);
+endchar;
+
+beginchar(bbhebr1,10u#+hebrew_jut#+2appr#,cap_height#,0);
+ "Hebrew letter bet (1)"& tmp_string;
+ italcorr 0.6cap_height#*slant-hebrew_jut#;
+ complete_hebrew_curve(0,hebrew_jut-0.5u,0.5,true);
+ pickup circle.nib;
+ apprl-lft x7=rt x8-(w-apprr)=hround 0.5u;
+ bot y7=bot y8=0;
+ pickup square.nib; draw z7..z8; labels(7,8);
+ complete_dagesh9(0.5[x1,x.bowl.mid],0.5h);
+ math_fit(0,0);
+endchar;
+
+beginchar(bbhebr2,8u#+2appr#,cap_height#,0);
+ "Hebrew letter gimel (2)& tmp_string";
+ italcorr 0.6cap_height#*slant-0.5u#;
+ complete_hebrew_curve(0.5u,0,0.5,true);
+ numeric t; pickup circle.nib;
+ x7=x4; lft x8=apprl; x9-x8=hThick;
+ y7=0.4[y4,y1]; y8=y9=y4; tmp_path:=z7 left_to_down z8;
+ t=xpart(tmp_path intersectiontimes bowl_path);
+ z10=tmp_path intersectionpoint (z9..(x9,y7));
+ z8a=lft z8; z9a=rt z9;
+ z8r=top z8; z9r=top z9;
+ y8l=y9l=0; x8l=x8a; x9l=x9a;
+ fill z8l--z9l--z9a--z9r--z8r--z8a--cycle;
+ draw subpath (t,2) of tmp_path; draw z9..z10;
+ labels(7,8,8a,8r,8l,9,9a,9r,9l,10);
+ complete_dagesh13(min(x1+0.5hthick,0.5[x1,x.bowl.mid]),0.5h);
+ math_fit(0,0);
+endchar;
+
+beginchar(bbhebr3,9u#+hebrew_jut#+2appr#,cap_height#,0);
+ "Hebrew letter dalet (3)"& tmp_string;
+ italcorr cap_height#*slant;
+ pickup circle.nib;
+ top y1=top y2=h; apprl-lft x1=rt x2-(w-apprr)=hround 0.5u;
+ y3=y6=y1; x2-x3=x2-x4=hebrew_jut;
+ x3-x6=x4-x5=hthick; bot y4=bot y5=0;
+ pickup square.nib; draw z1..z2;
+ draw z3--z4--z5--z6; labels(1,2,3,4,5,6);
+ complete_dagesh7(0.5[x1,x5],0.5h);
+ math_fit(0,0);
+endchar;
+
+beginchar(bbhebr4,12u#+Appr#+appr#,cap_height#,0);
+ "Hebrew letter he (4)"& tmp_string;
+ italcorr 0.6cap_height#*slant-0.5u#;
+ complete_hebrew_curve(Apprl-apprl,0,0.5,true);
+ y7=y8=y4; x7=x9=x1; x8-x7=x10-x9=hthick;
+ top y9=top y10=h-hebrew_flare;
+ draw z7--z8--z10--z9--cycle;
+ labels(7,8,9,10);
+ complete_dagesh11(0.5[x.bowl.mid,x8],0.5h);
+ math_fit(0,0);
+endchar;
+
+iff square_hebrew and not dagesh_mark:
+beginchar(bbhebr5,hthick#+thin#+2Appr#,cap_height#,0);
+ "Hebrew letter vav (5)";
+ italcorr cap_height#*slant-u#;
+ center_bar(1,2); x3=x1; x4=x2; bot y1=bot y2=-d; top y3=top y4=h;
+ pickup square.nib; draw z1--z2--z4--z3--cycle;
+ labels(1,2,3,4);
+ math_fit(0,0);
+endchar;
+
+iff square_hebrew and dagesh_mark:
+beginchar(bbhebr5,2hthick#+2thin#+dot_skip#+appr#+Appr#,cap_height#,0);
+ "Hebrew letter vav (5) with dagesh";
+ italcorr cap_height#*slant-u#;
+ pickup circle.nib; rt x2=rt x4=w-Apprr; x2-x1=x5'-x5=hthick;
+ x3=x1; x1-x5'=thin+dot_skip; bot y5=vround(0.5h-0.5dot_size);
+ top y5'-bot y5=dot_size; bot y1=bot y2=-d; top y3=top y4=h;
+ pickup square.nib; draw z1--z2--z4--z3--cycle; dot(5,5');
+ labels(1,2,3,4);
+ math_fit(0,0);
+endchar;
+
+iff not square_hebrew and not dagesh_mark:
+beginchar(bbhebr5,hthick#+thin#+yod_jut#+2appr#,cap_height#,0);
+ "Hebrew letter vav (5)";
+ italcorr 0.8cap_height#*slant-0.5u#;
+ complete_hebrew_curve(-0.5u,0,0.75,true);
+ math_fit(0,0);
+endchar;
+
+iff not square_hebrew and dagesh_mark:
+beginchar(bbhebr5,hthick#+thin#
+ +max(hthick#+thin#+dot_skip#,yod_jut#)+2appr#,cap_height#,0);
+ "Hebrew letter vav (5) with dagesh";
+ italcorr 0.8cap_height#*slant-0.5u#;
+ complete_hebrew_curve(w-apprr-hthick-thin-yod_jut-apprl-0.5u,0,0.75,true);
+ pickup circle.nib; lft x7=min(apprl,lft x.bowl.mid-hthick-thin-dot_skip);
+ x7'-x7=hthick; bot y7=vround(0.5h-0.5dot_size);
+ top y7'-bot y7=dot_size; dot(7,7');
+ math_fit(0,0);
+endchar;
+
+iff not dagesh_mark:
+beginchar(bbhebr6,hthick#+thin#+2hebrew_jut#-u#+2appr#,cap_height#,0);
+ "Hebrew letter zayin (6)";
+ italcorr cap_height#*slant;
+ center_bar(5,6); x4=x5;
+ apprl-lft x1=rt x2-(w-apprr)=hround 0.5u;
+ top y1=top y2=top y3=h; bot y5=bot y6=0;
+ if not square_hebrew: x3=0.25[x2,x6]; y4=0.6[y5,y1];
+ tmp_path:=z3 left_to_down z4..z5;
+ draw tmp_path; hbbowl(z3,z4,z5,x6-x5) tmp_path;
+ pickup square.nib;
+ draw z1--z2; draw z5..z6; labels(1,2,3,4,5,6);
+ else: y4=y3; x3=x6; pickup square.nib; draw z1--z2;
+ draw z3--z6--z5--z4; labels(1,2,3,4,5,6);
+ fi
+ math_fit(0,0);
+endchar;
+
+iff dagesh_mark:
+beginchar(bbhebr6,hthick#+thin#+hebrew_jut#-0.5u#
+ +max(hthick#+thin#+dot_skip#,hebrew_jut#)+2appr#,cap_height#,0);
+ "Hebrew letter zayin (6) with dagesh";
+ italcorr cap_height#*slant;
+ pickup circle.nib; rt x2=w-apprr+hround 0.5u;
+ x2-x6=x5-x1=hebrew_jut; x6-x5=x7'-x7=hthick; x4=x5;
+ lft x7=min(apprl,lft x5-hthick-thin-dot_skip);
+ top y1=top y2=top y3=h; bot y5=bot y6=0;
+ bot y7=vround(0.5h-0.5dot_size); top y7'-bot y7=dot_size;
+ if not square_hebrew: x3=0.25[x2,x6]; y4=0.6[y5,y1];
+ tmp_path:=z3 left_to_down z4..z5;
+ draw tmp_path; hbbowl(z3,z4,z5,x6-x5) tmp_path;
+ pickup square.nib;
+ draw z1--z2; draw z5..z6; labels(1,2,3,4,5,6);
+ else: y4=y3; x3=x6; pickup square.nib; draw z1--z2;
+ draw z3--z6--z5--z4; labels(1,2,3,4,5,6);
+ fi
+ dot(7,7');
+ math_fit(0,0);
+endchar;
+
+beginchar(bbhebr7,12u#+Appr#+appr#,cap_height#,0);
+ "Hebrew letter het (7)"& tmp_string;
+ italcorr 0.6cap_height#*slant-0.5u#;
+ complete_hebrew_curve(Apprl-apprr,0,0.5,false);
+ x7=x1; x8=x9=x7+hthick; y7=y8=y4; y9=y1;
+ draw z1--z7--z8--z9; labels(7,8,9);
+ complete_dagesh10(0.5[x.bowl.mid,x8],0.5h);
+ math_fit(0,0);
+endchar;
+
+beginchar(bbhebr8,12.25u#+2appr#,cap_height#,0);
+ "Hebrew letter tet (8)"& tmp_string;
+ italcorr 0.6cap_height#*slant-0.5u#;
+ pickup circle.nib;
+ lft x2=lft x3=apprl; x4=x6=0.5[x2,x5]; rt x5=w-apprr;
+ x1=x2+hthick; lft x7=hround max(0.3[apprl,w-apprr],rt x1+u);
+ top y2=h; y1=y2=y6=y7; y3=y5=0.5[y2,y4]; bot y4=0;
+ tmp_path:=z2..z3 down_to_right z4 right_to_up z5 up_to_left z6..z7;
+ draw tmp_path; hbbowl(z4,z3,z2,x1-x2) tmp_path;
+ bbbowl(z6,z5,z4,hThick) tmp_path;
+ pickup square.nib; draw z1..z2; square_end7(left);
+ labels(1,2,3,4,5,6,7);
+ complete_dagesh11(0.5[x1,x.bowl.mid],0.5h);
+ math_fit(0,0);
+endchar;
+
+iff square_hebrew and not dagesh_mark:
+beginchar(bbhebr9,hthick#+thin#+2Appr#,cap_height#,0);
+ "Hebrew letter yod (9)";
+ italcorr cap_height#*slant-u#;
+ center_bar(1,2); x1=x3; x2=x4;
+ bot y1=bot y2=vround 0.5h; top y3=top y4=h; pickup square.nib;
+ draw z1--z2--z4--z3--cycle; labels(1,2,3,4);
+ math_fit(0,0);
+endchar;
+
+iff square_hebrew and dagesh_mark:
+beginchar(bbhebr9,2hthick#+2thin#+dot_skip#+appr#+Appr#,cap_height#,0);
+ "Hebrew letter yod (9) with dagesh";
+ italcorr cap_height#*slant-u#;
+ pickup circle.nib; rt x2=rt x4=w-Apprr; x2-x1=x5'-x5=hthick;
+ x3=x1; x1-x5'=thin+dot_skip; bot y5=vround(0.5h-0.5dot_size);
+ top y5'-bot y5=dot_size; bot y1=bot y2=vround 0.5h; top y3=top y4=h;
+ pickup square.nib; draw z1--z2--z4--z3--cycle; dot(5,5');
+ labels(1,2,3,4);
+ math_fit(0,0);
+endchar;
+
+iff not square_hebrew and not dagesh_mark:
+beginchar(bbhebr9,hthick#+thin#+yod_jut#+2appr#,cap_height#,0);
+ "Hebrew letter yod (9)";
+ italcorr 0.8cap_height#*slant-0.5u#;
+ begingroup save d; d=-vround 0.5h;
+ complete_hebrew_curve(-0.5u,0,0.5,true);
+ endgroup;
+ math_fit(0,0);
+endchar;
+
+iff not square_hebrew and dagesh_mark:
+beginchar(bbhebr9,hthick#+thin#+
+ +max(hthick#+thin#+dot_skip#,yod_jut#)+2appr#,cap_height#,0);
+ "Hebrew letter yod (9) with dagesh";
+ italcorr 0.8cap_height#*slant-0.5u#;
+ begingroup save d; d=-vround 0.5h;
+ complete_hebrew_curve(w-apprr-hthick-thin-yod_jut-apprl-0.5u,0,0.5,true);
+ endgroup;
+ pickup circle.nib;
+ lft x7=min(apprl,lft x.bowl.mid-hthick-thin-dot_skip);
+ x7'-x7=hthick; bot y7=vround(0.5h-0.5dot_size);
+ top y7'-bot y7=dot_size; dot(7,7');
+ math_fit(0,0);
+endchar;
+
+beginchar(bbhebr10,10u#+2appr#,cap_height#,desc_depth#);
+ "Hebrew letter final kaf (10)"& tmp_string;
+ italcorr 0.6cap_height#*slant-0.5u#;
+ complete_hebrew_curve(0,0,0.5,true);
+ complete_dagesh7(0.5[x1,x.bowl.mid],0.5h);
+ math_fit(0,0);
+endchar;
+
+beginchar(bbhebr11,12u#+2appr#,cap_height#,0);
+ "Hebrew letter kaf (11)"& tmp_string;
+ italcorr 0.6cap_height#*slant-0.5u#;
+ complete_hebrew_curve(0,0,0.5,true);
+ z7=(x1,y4); draw z7..z4; labels(7);
+ complete_dagesh8(0.5[x1,x.bowl.mid],0.5h);
+ math_fit(0,0);
+endchar;
+
+beginchar(bbhebr12,12u#+2appr#,cap_height#,0);
+ "Hebrew letter lamed (12)"& tmp_string;
+ italcorr cap_height#*slant-0.5u#;
+ pickup circle.nib;
+ rt x2=rt x3=w-apprr; bot y1=0; top y3=top y4=h; y2=h/2;
+ top y5-bot y4=hebrew_flare; y5=y6; lft x4=lft x5=apprl; y7=y4;
+ x7=x6=x5+hthick; lft x1=hround(0.4[apprl,w-apprr]);
+ tmp_path:=z1 right_to_up z2..z3;
+ draw tmp_path; hbbowl(z1,z2,z3,hthick) tmp_path;
+ pickup square.nib; draw z3--z4--z5--z6--z7;
+ square_end1(left); labels(1,2,3,4,5,6,7);
+ complete_dagesh10(0.5[x4,x.bowl.mid],0.5h);
+ math_fit(0,0);
+endchar;
+
+beginchar(bbhebr13,12u#+Appr#+appr#,cap_height#,0);
+ "Hebrew letter final mem (13)"& tmp_string;
+ italcorr 0.6cap_height#*slant-0.5u#;
+ complete_hebrew_curve(Apprl-apprl,0,0.5,false);
+ y9=y1; y7=y8=y4; x7=x1; x8=x9=x7+hthick;
+ draw z1--z7--z4; draw z8..z9;
+ labels(7,8,9);
+ complete_dagesh10(0.5[x8,x.bowl.mid],0.5h);
+ math_fit(0,0);
+endchar;
+
+beginchar(bbhebr14,12u#+Appr#+appr#,cap_height#,0);
+ "Hebrew letter mem (14)"& tmp_string;
+ italcorr 0.6cap_height#*slant-0.5u#;
+ pickup circle.nib; numeric t;
+ lft x1=lft x3=lft x6=Apprl; x2=x4=x1+hthick; rt x8=rt x9=w-apprr;
+ x7=0.5[x6,x8];
+ lft x10=hround max(0.4[apprl,w-apprr],rt x2+u);
+ top y3=top y4=h; top y7=h; bot y1=0; y1=y2=y9=y10;
+ y6=y8=0.5[y1,y7];
+ tmp_path:=z6 up_to_right z7 right_to_down z8..z9;
+ t=xpart(tmp_path intersectiontimes(z2..(x2,y7)));
+ z5=point t of tmp_path;
+ draw z4..z5&subpath(t,5) of tmp_path; hbbowl(z7,z8,z9,hthick) tmp_path;
+ pickup square.nib; draw z9..z10; draw z1--z2--z4--z3--cycle;
+ labels(1,2,3,4,5,6,7,8,9,10);
+ complete_dagesh15(0.5[x2,x.bowl.mid],0.5h);
+ math_fit(0,0);
+endchar;
+
+iff square_hebrew and not dagesh_mark:
+beginchar(bbhebr15,hthick#+thin#+2Appr#,cap_height#,desc_depth#);
+ "Hebrew letter final nun (15)";
+ italcorr cap_height#*slant-u#;
+ center_bar(1,2); x3=x1; x4=x2; bot y1=bot y2=-d; top y3=top y4=h;
+ pickup square.nib; draw z1--z2--z4--z3--cycle;
+ labels(1,2,3,4);
+ math_fit(0,0);
+endchar;
+
+iff square_hebrew and dagesh_mark:
+beginchar(bbhebr15,2hthick#+2thin#+dot_skip#+appr#+Appr#,
+ cap_height#,desc_depth#);
+ "Hebrew letter final nun (15) with dagesh";
+ italcorr cap_height#*slant-u#;
+ pickup circle.nib; rt x2=rt x4=w-Apprr; x2-x1=x5'-x5=hthick;
+ x3=x1; x1-x5'=thin+dot_skip; bot y5=vround(0.5h-0.5dot_size);
+ top y5'-bot y5=dot_size; bot y1=bot y2=-d; top y3=top y4=h;
+ pickup square.nib; draw z1--z2--z4--z3--cycle; dot(5,5');
+ labels(1,2,3,4);
+ math_fit(0,0);
+endchar;
+
+iff not square_hebrew and not dagesh_mark:
+beginchar(bbhebr15,hthick#+thin#+yod_jut#+2appr#,
+ cap_height#,desc_depth#);
+ "Hebrew letter final nun (15)";
+ italcorr 0.8cap_height#*slant-0.5u#;
+ complete_hebrew_curve(-0.5u,0,0.75,true);
+ math_fit(0,0);
+endchar;
+
+iff not square_hebrew and dagesh_mark:
+beginchar(bbhebr15,hthick#+thin#+
+ +max(hthick#+thin#+dot_skip#,yod_jut#)
+ +2appr#,cap_height#,desc_depth#);
+ "Hebrew letter final nun (15) with dagesh";
+ italcorr 0.8cap_height#*slant-0.5u#;
+ complete_hebrew_curve(w-apprr-hthick-thin-yod_jut-apprl-0.5u,0,0.75,true);
+ pickup circle.nib; lft x7=min(apprl,lft x.bowl.mid-hthick-thin-dot_skip);
+ x7'-x7=hthick; bot y7=vround(0.5h-0.5dot_size);
+ top y7'-bot y7=dot_size; dot(7,7');
+ math_fit(0,0);
+endchar;
+
+%beginchar(bbhebr15,hthick#+thin#+2appr#,cap_height#,desc_depth#);
+% "Hebrew letter final nun (15)";
+% italcorr cap_height#*slant-0.5u#;
+% center_bar(1,2); x3=x1; x4=x2; bot y1=bot y2=-d; top y3=top y4=h;
+% pickup square.nib; draw z1--z2--z4--z3--cycle;
+% labels(1,2,3,4);
+% math_fit(0,0);
+%endchar;
+
+beginchar(bbhebr16,7.5u#+2appr#,cap_height#,0);
+ "Hebrew letter nun (16)"& tmp_string;
+ italcorr cap_height#*slant-0.5u#;
+ pickup circle.nib;
+ rt x3=rt x4=w-apprr; lft x1=apprl-hround 0.5u;
+ x2=max(0.25[x1,x3],rt x3-6u);
+ bot y1=bot y2=0; top y4=h; y3=0.5[y1,y4];
+ tmp_path:=z1..z2 right_to_up z3..z4;
+ draw tmp_path; hbbowl(z2,z3,z4,hthick) tmp_path;
+ pickup square.nib; draw z4..z.bowl.bot;
+ square_end1(left); labels(1,2,3,4);
+ complete_dagesh7(0.5[x1,x.bowl.mid],0.5h);
+ math_fit(0,0);
+endchar;
+
+beginchar(bbhebr17,12.25u#+2appr#,cap_height#,0);
+ "Hebrew letter samekh (17)"& tmp_string;
+ italcorr cap_height#*slant-0.5u#;
+ pickup circle.nib;
+ lft x1=apprl; rt x5=w-apprr; x2=x1; x4=x5; x3=0.5[x1,x5];
+ top y1=h; y5=y1; bot y3=0; y2=y4=0.5[y1,y3];
+ tmp_path:=z1..z2 down_to_right z3 right_to_up z4..z5;
+ draw tmp_path; hbbowl(z3,z2,z1,hthick) tmp_path;
+ hbbowl(z3,z4,z5,hthick) tmp_path;
+ pickup square.nib; draw z1..z5;
+ labels(1,2,3,4,5);
+ complete_dagesh10(0.5[x1,x5],0.5h);
+ math_fit(0,0);
+endchar;
+
+beginchar(bbhebr18,11.5u#+hebrew_jut#+2appr#,cap_height#,0);
+ "Hebrew letter ayin (18)"& tmp_string;
+ italcorr cap_height#*slant-0.5u#;
+ pickup circle.nib;
+ rt x3=rt x4=w-apprr; lft x1=apprl-hround 0.5u; x2=w-apprr-6u;
+ x5=x6=good.x(x1+hebrew_jut+u); x7=x8=x5+hthick;
+ bot y1=0; y2=y5=y8=y1; top y4=h; y4=y6=y7; y3=h/2;
+ tmp_path:=z1..z2 right_to_up z3..z4;
+ draw tmp_path; hbbowl(z2,z3,z4,hthick) tmp_path;
+ pickup square.nib; draw z4..z.bowl.bot; draw z5--z6--z7--z8;
+ square_end1(left); labels(1,2,3,4,5,6,7,8);
+ complete_dagesh11(0.5[x7,x.bowl.mid],0.5h);
+ math_fit(0,0);
+endchar;
+
+beginchar(bbhebr19,12u#+2appr#,cap_height#,desc_depth#);
+ "Hebrew letter final pe (19)"& tmp_string;
+ italcorr 0.6cap_height#*slant-0.5u#;
+ complete_hebrew_curve(0,0,0.5,false);
+ bot y7=bot y8=h-hebrew_flare; x7=x1;
+ y9=y1; x9-x1=x8-x7=hthick;
+ draw z1--z7--z8--z9; labels(7,8,9);
+ complete_dagesh10(0.5[0.5[x7,x8],x.bowl.mid],0.5h);
+ math_fit(0,0);
+endchar;
+
+beginchar(bbhebr20,12u#+2appr#,cap_height#,0);
+ "Hebrew letter pe (20)"& tmp_string;
+ italcorr 0.6cap_height#*slant-0.5u#;
+ complete_hebrew_curve(0,0,0.5,false);
+ bot y7=bot y8=h-hebrew_flare; x7=x10=x1; y9=y1; y10=y4;
+ x9-x1=x8-x7=hthick; draw z1--z7--z8--z9; draw z10..z4;
+ labels(7,8,9,10);
+ complete_dagesh11(0.5[0.5[x7,x8],x.bowl.mid],0.5h);
+ math_fit(0,0);
+endchar;
+
+beginchar(bbhebr21,12u#+Appr#+appr#,cap_height#,desc_depth#);
+ "Hebrew letter final tzadi (21)"& tmp_string;
+ italcorr cap_height#*slant-0.5u#;
+ numeric t; pickup circle.nib;
+ bot y1=bot y2=-d; top y3=h; y3=y4=y6=y8=y9;
+ bot y7=hebrew_flare;
+ lft x1=lft x4=lft x6=Apprl; rt x8=w-apprr;
+ x2=x3=x1+hthick; x7=0.5[x1,x8];
+ tmp_path:=z6 down_to_right z7 right_to_up z8;
+ t=xpart(tmp_path intersectiontimes (z2..z3));
+ hbbowl(z7,z8,z8,hThick) tmp_path; z9=z.bowl.bot;
+ z5=point t of tmp_path;
+ z9a=lft z9; z8a=rt z8; z9l=bot z9; z8l=bot z8;
+ z9r=(x9a,h); z8r=(x8a,h);
+ fill z8a--z8r--z9r--z9a--z9l--z8l--cycle;
+ draw subpath (t,4) of tmp_path;
+ pickup square.nib;
+ draw z1--z2--z3--z4--cycle;
+ labels(1,2,3,4,5,6,7,8,9,8a,9a,10,12); penlabels(8,9);
+ complete_dagesh13(0.5[x2,x9],0.5[y3,y7]);
+ math_fit(0,0);
+endchar;
+
+beginchar(bbhebr22,12u#+2appr#,cap_height#,0#);
+ "Hebrew letter tzadi (22)"& tmp_string;
+ italcorr cap_height#*slant-0.5u#;
+ pickup circle.nib;
+ numeric t;
+ x1l+0.4u=x5l=apprl; x6l=w-apprr; y1l=h; y5l=y6l=-d;
+ penpos5(thin,90); penpos6(thin,90); z4r=z6r;
+ adjust_slanted_bar(1l,4r,2r,3l)(thick+thin,1);
+ a:=diag_width(thin,z1l-z3l);
+ penpos1(a,0); penpos2(a,0); penpos3(a,0); penpos4(a,0);
+ y1-y1a=thin; z1-z1a=z2-z2a=whatever*(z1-z3);
+ penstroke z1e..z3e; penstroke z2e..z4e; penstroke z5e..z6e;
+ fill z1--z2--z2a--z1a--cycle;
+ rt x7=w-apprr; x7-x10=hThick; top y7=top y10=h;
+ x8=0.5[x2,x2a]; bot y8=hebrew_flare;
+ tmp_path:=z7 down_to_left z8;
+ t=xpart(tmp_path intersectiontimes (z2..z4));
+ z9=point t of tmp_path;
+ if x9<x10: z11=tmp_path intersectionpoint (z10..(x10,y8));
+ else: x11=x10; z11=whatever[z2,z4]; fi
+ draw subpath (0,t) of tmp_path; draw z10..z11;
+ z7a=rt z7; z10a=lft z10;
+ z7r=bot z7; z10r=bot z10;
+ y7l=y10l=h; x7l=x7a; x10l=x10a;
+ fill z7l--z10l--z10a--z10r--z7r--z7a--cycle;
+ labels(1a,2a,4a,7a,8,9,10a,11);
+ penlabels(1,2,3,4,5,6,7,10);
+ complete_dagesh12(
+ max(
+ min(
+ 0.25[x1,x3],
+ 0.5[x1,x3]+0.5dot_size*(x1-x3)/(y1-y3)-0.5(hthick+thin)-dot_skip
+ ),
+ apprl+0.5(hthick+thin)
+ ),0.5h);
+ math_fit(0,0);
+endchar;
+
+% Comments about the placement of the dagesh mark:
+% the right x position is `0.25[x1,x3]',
+% but upper right corner of the square dot should not
+% lie beyond the line `z1..z3', so this
+% position may be the minimum of the previous coordinate and
+% `0.5[x1,x3]+0.5dot_size*(x1-x3)/(y1-y3)-0.5(hthick+thin)-dot_skip';
+% at last the dot mustn't go beyond the left limit,
+% so we finally take the maximum of the previous quantity
+% and `apprl+0.5(hthick+thin)' to be the right x coordinate.
+
+beginchar(bbhebr23,12u#+Appr#+appr#,cap_height#,desc_depth#);
+ "Hebrew letter qof (23)"& tmp_string;
+ italcorr cap_height#*slant-0.5u#;
+ pickup circle.nib;
+ rt x2=rt x3=w-apprr; bot y1=0; top y3=top y4=h; y2=h/2;
+ top y5=top y6=h-hebrew_flare;
+ lft x4=lft x5=lft x8=Apprl; x6=x7=x5+hthick; bot y8=bot y7=-d;
+ lft x1=hround max(0.4[apprl,w-apprr],rt x6+u);
+ tmp_path:=z1 right_to_up z2..z3;
+ draw tmp_path; hbbowl(z1,z2,z3,hthick) tmp_path;
+ pickup square.nib; draw z3--z4; draw z5--z6--z7--z8--cycle;
+ square_end1(left); labels(1,2,3,4,5,6,7,8);
+ complete_dagesh11(0.5[x.bowl.mid,x6],0.5h);
+ math_fit(0,0);
+endchar;
+
+beginchar(bbhebr24,10.5u#+2appr#,cap_height#,0);
+ "Hebrew letter resh (24)"& tmp_string;
+ italcorr 0.6cap_height#*slant-0.5u#;
+ complete_hebrew_curve(-0.5u,0,0.5,true);
+ complete_dagesh7(0.5[x1,x.bowl.mid],0.5h);
+ math_fit(0,0);
+endchar;
+
+beginchar(bbhebr25,14u#+2appr#,cap_height#,0);
+ "Hebrew letter shin (25)"& tmp_string;
+ italcorr cap_height#*slant-0.5u#;
+ numeric t;
+ center_bar(10',11');
+ lft x3=apprl; rt x7=w-apprr; x7-x8=x2-x3=hthick;
+ if not dagesh_mark: x10=x10'; x11=x11';
+ else: x11-x10=x14'-x14=hthick;
+ x8-x14'=x14-x11=max(dot_skip+thin,hround 0.5(x8-x11'-hthick));
+ top y14'-bot y14=dot_size; bot y14=vround 0.5(h-dot_size);
+ dot(14,14'); pickup circle.nib;
+ fi
+ x12=x11; x4=x3; x6=x7; top y3=h; y7=y8=y2=y3=y10=y11;
+ y4=y6=0.5[y5,y3]; x5=0.5[x3,x7]; bot y5=0;
+ tmp_path:=z3..z4 down_to_right z5 right_to_up z6..z7;
+ t=xpart(tmp_path intersectiontimes (z2..(x2,y5)));
+ z1=point t of tmp_path;
+ draw tmp_path;
+ hbbowl(z5,z6,z7,hthick) tmp_path;
+ if not square_hebrew:
+ y12=y4; y9=y1; x9=x10;
+ z13-z12=(point 0.5(1+t) of tmp_path-z4) xscaled -1;
+ tmpp_path:=z11---z12...z13{(direction 0.5(1+t) of tmp_path) xscaled -1}
+ ...z9{(direction t of tmp_path) xscaled -1}
+ ...z1{-direction t of tmp_path};
+ draw tmpp_path; draw z1..z2;
+ hbbowl(point 3.5 of tmpp_path,z12,z11,hthick) tmpp_path;
+ pickup square.nib; draw z10..z11; labels(13);
+ else: hbbowl(z5,z4,z3,hthick) tmp_path;
+ x9=x10; bot y9=bot y12=vround 0.25h;
+ pickup square.nib; draw z9--z10--z11--z12--cycle;
+ fi
+ draw z2..z3; draw z7..z8;
+ labels(1,2,3,4,5,6,7,8,9,10,11,12);
+ math_fit(0,0);
+endchar;
+
+beginchar(bbhebr26,11.5u#+hebrew_jut#+2appr#,cap_height#,0);
+ "Hebrew letter tav (26)"& tmp_string;
+ italcorr 0.6cap_height#*slant-0.5u#;
+ complete_hebrew_curve(hebrew_jut-0.5u,0,0.5,false);
+ pickup circle.nib; y7=y8=y9=y4; lft x8=apprl-hround 0.5u;
+ x7=x1; x9-x7=hthick; x10=x9; y10=y1;
+ pickup square.nib; draw z1..z7; draw z8--z9--z10;
+ labels(7,8,9,10);
+ complete_dagesh11(0.5[x.bowl.mid,x9],0.5h);
+ math_fit(0,0);
+endchar;
+
+% ligatures.
+
+iff known bbhebr27 and square_hebrew:
+beginchar(bbhebr27,2hthick#+2thin#+2Appr#+2appr#,cap_height#,0);
+ "Hebrew ligature vav-vav (27)";
+ italcorr cap_height#*slant-u#;
+ pickup circle.nib;
+ bot y1=0; y1=y2=y5=y6; top y3=h; y3=y4=y7=y8;
+ lft x1=lft x4=Apprl; rt x6=rt x7=w-Apprr;
+ x2-x1=x3-x4=x6-x5=x7-x8=hthick;
+ pickup square.nib; draw z1--z2--z3--z4--cycle;
+ draw z5--z6--z7--z8--cycle;
+ labels(1,2,3,4,5,6,7,8);
+ math_fit(0,0);
+endchar;
+
+iff known bbhebr27 and not square_hebrew:
+beginchar(bbhebr27,2hthick#+2thin#+yod_jut#+4appr#,cap_height#,0);
+ "Hebrew ligature vav-vav (27)";
+ italcorr 0.8cap_height#*slant-0.5u#;
+ a:=w-apprl-apprr-(thin+hthick+yod_jut);
+ complete_hebrew_curve(0-0.5u,a,0.75,true);
+ complete_hebrew_curve'(a-0.5u,0,0.75,true);
+ math_fit(0,0);
+endchar;
+
+iff known bbhebr28 and square_hebrew:
+beginchar(bbhebr28,2hthick#+2thin#+2Appr#+2appr#,cap_height#,0);
+ "Hebrew ligature yod-vav (28)";
+ italcorr cap_height#*slant-u#;
+ pickup circle.nib;
+ bot y1=bot y2=vround 0.5h;
+ bot y5=bot y6=0; top y3=h; y3=y4=y7=y8;
+ lft x1=lft x4=Apprl; rt x6=rt x7=w-Apprr;
+ x2-x1=x3-x4=x6-x5=x7-x8=hthick;
+ pickup square.nib; draw z1--z2--z3--z4--cycle;
+ draw z5--z6--z7--z8--cycle;
+ labels(1,2,3,4,5,6,7,8);
+ math_fit(0,0);
+endchar;
+
+iff known bbhebr28 and not square_hebrew:
+beginchar(bbhebr28,2hthick#+2thin#+yod_jut#+4appr#,cap_height#,0);
+ "Hebrew ligature yod-vav (28)";
+ italcorr 0.8cap_height#*slant-0.5u#;
+ a:=w-apprl-apprr-(thin+hthick+yod_jut);
+ begingroup save d; d=-vround 0.5h;
+ complete_hebrew_curve(-0.5u,a,0.5,true);
+ endgroup;
+ complete_hebrew_curve'(a-0.5u,0,0.75,true);
+ math_fit(0,0);
+endchar;
+
+iff known bbhebr29 and square_hebrew:
+beginchar(bbhebr29,2hthick#+2thin#+2Appr#+2appr#,cap_height#,0);
+ "Hebrew ligature yod-yod (29)";
+ italcorr cap_height#*slant-u#;
+ pickup circle.nib;
+ bot y1=vround 0.5h; y1=y2=y5=y6; top y3=h; y3=y4=y7=y8;
+ lft x1=lft x4=Apprl; rt x6=rt x7=w-Apprr;
+ x2-x1=x3-x4=x6-x5=x7-x8=hthick;
+ pickup square.nib; draw z1--z2--z3--z4--cycle;
+ draw z5--z6--z7--z8--cycle; labels(1,2,3,4,5,6,7,8);
+ math_fit(0,0);
+endchar;
+
+iff known bbhebr29 and not square_hebrew:
+beginchar(bbhebr29,2hthick#+2thin#+yod_jut#+4appr#,cap_height#,0);
+ "Hebrew ligature vav-vav (29)";
+ italcorr 0.8cap_height#*slant-0.5u#;
+ a:=w-apprl-apprr-(thin+hthick+yod_jut);
+ begingroup save d; d=-vround 0.5h;
+ complete_hebrew_curve(-0.5u,a,0.5,true);
+ complete_hebrew_curve'(a-0.5u,0,0.5,true);
+ endgroup;
+ math_fit(0,0);
+endchar;
+
+iff known bbhebr30:
+beginchar(bbhebr30,5u#+2appr#,body_height#,0);
+ "Hebrew punctuation geresh (apostrophe)";
+ if square_hebrew:
+ italcorr body_height#*slant;
+ x1l=apprl-0.5u; x4r=w-apprr+0.5u;
+ y4r=h; y1l=vround 0.7h;
+ adjust_slanted_bar(1l,4r,2r,3l)(thick+thin,-1);
+ numeric a,b; b=x4r-x1l;% it will be usefull for the next character.
+ a=diag_width(thin,z3l-z1l);
+ penpos1(a,0); penpos2(a,0); penpos3(a,0); penpos4(a,0);
+ y1a-y1=thin; z1a=whatever[z1,z3]; z1a-z1=z2a-z2=z3-z3a=z4-z4a;
+ penstroke z1e..z3e; penstroke z2e..z4e;
+ fill z1a--z2a--z2--z1--cycle; fill z3--z4--z4a--z3a--cycle;
+ labels(1a,2a,3a,4a); penlabels(1,2,3,4);
+ else:
+ italcorr (body_height#-0.4dot_size#)*slant-0.5u#;
+ numeric b; b=x2-x1; pickup circle.nib;
+ x2=w-apprr-dot_size/2-hround 0.5u;
+ x1=apprl+dot_size/4+hround 0.5u;
+ y1=vround 0.7h+dot_size/4;
+ y2=h-dot_size/2; long_dot(1,2);
+ fi
+ math_fit(0,0);
+endchar;
+
+iff known bbhebr31:
+beginchar(bbhebr31,10u#+2appr#,body_height#,0);
+ "Hebrew punctuation gershayim (double apostrophe)";
+ if square_hebrew:
+ italcorr body_height#*slant;
+ x1l=apprl-0.5u; x4r-x1l=b; y4r=h; y1l=vround 0.7h;
+ adjust_slanted_bar(1l,4r,2r,3l)(thick+thin,-1);
+ a:=diag_width(thin,z3l-z1l);
+ penpos1(a,0); penpos2(a,0); penpos3(a,0); penpos4(a,0);
+ y1a-y1=thin; z1a=whatever[z1,z3]; z1a-z1=z2a-z2=z3-z3a=z4-z4a;
+ for i=1 upto 4: forsuffixes $=,r,l,a:
+ z[i+4]$-z[i]$=(w-apprr-x4,0); endfor endfor
+ penstroke z1e..z3e; penstroke z2e..z4e;
+ penstroke z5e..z7e; penstroke z6e..z8e;
+ fill z1a--z2a--z2--z1--cycle; fill z3--z4--z4a--z3a--cycle;
+ fill z5a--z6a--z6--z5--cycle; fill z7--z8--z8a--z7a--cycle;
+ labels(1a,2a,3a,4a,5a,6a,7a,8a); penlabels(1,2,3,4,5,6,7,8);
+ else:
+ italcorr (body_height#-0.4dot_size#)*slant-0.5u#;
+ pickup circle.nib;
+ x4=w-apprr-dot_size/2-hround 0.5u;
+ x1=apprl+dot_size/4+hround 0.5u;
+ y1=y3=vround 0.7h+dot_size/4;
+ y2=y4=h-dot_size/2; x2-x1=x4-x3=b;
+ long_dot(1,2); long_dot(3,4);
+ fi
+ math_fit(0,0);
+endchar;
diff --git a/fonts/mbboard/source/mbbhebvw.mf b/fonts/mbboard/source/mbbhebvw.mf
new file mode 100644
index 0000000000..baf4c034cc
--- /dev/null
+++ b/fonts/mbboard/source/mbbhebvw.mf
@@ -0,0 +1,210 @@
+% blackboard typefaces by Anthony Phan.
+% file: mbbhebvw.mf (Hebrew points and punctuation)
+% last modification: 25.10.2001.
+
+diacritics_proofing;% changes extra_endchar for proof mode.
+
+def horizontal_rules_list=
+ -body_depth,-paren_depth,-desc_depth,
+ x_height,cap_height,asc_height,body_height
+enddef;
+
+use_rule1;
+
+beginchar(bbhebvow[0],8u#+2appr#,0,bot_skip#+heb_size2#);
+ "Hebrew point sheva";
+ center_bar(1,1'); x2=x1; x2'=x1';
+ top y1'=bot y2+heb_size2=-bot_skip;
+ top y1'-bot y1=top y2'-bot y2=dot_size;
+ dot(1,1'); dot(2,2');
+endchar;
+
+beginchar(bbhebvow[1],8u#+2appr#,0,bot_skip#+heb_size2#);
+ "Hebrew point hataf-segol";
+ center_bar(2,2');
+ lft x1-apprl=w-apprr-rt x3'=w-apprr-rt x5'
+ =hround min(0,(w-apprl-apprr)/3-hthick-thin-2dot_skip/3);
+ x1'-x1=x3'-x3=x4'-x4=x5'-x5=hthick; x4=good.x 0.5[x1,x2];
+ top y1'=bot y4+heb_size2=-bot_skip;
+ top y1'-bot y1=top y4'-bot y4=dot_size;
+ y1=y2=y3; y1'=y2'=y3'; y4=y5; y4'=y5';
+ dot(1,1'); dot(2,2'); dot(3,3'); dot(4,4'); dot(5,5');
+endchar;
+
+beginchar(bbhebvow[2],8u#+2appr#,0,bot_skip#+dot_size#);
+ "Hebrew point hataf-patah";
+ pickup circle.nib;
+ rt x1'=w-apprr; x1'-x1=hthick; top y1'=-bot_skip;
+ lft x2=apprl; x3-x2=2hround u+hthick;
+ top y1'-bot y1=dot_size; y1'=y2=y3;
+ dot(1,1'); pickup square.nib; draw z2..z3;
+ labels(2,3);
+endchar;
+
+% humm
+beginchar(bbhebvow[3],8u#+2appr#,0,bot_skip#+heb_size2#);
+ "Hebrew point hataf-qamats";
+ pickup circle.nib;
+ rt x2=rt x10=w-apprr; x2-x1=x8-x5=x7-x6=x10-x9=hthick;
+ lft x3=apprl; x4-x3=2hround u+hthick;
+ x5=x6=x3+hround u;
+ top y2=bot y9+heb_size2=-bot_skip; top y2-bot y1=top y10-bot y9=dot_size;
+ bot y6=bot y7=-bot_skip-heb_size1; y2=y3=y4=y5=y8;
+ dot(1,2); dot(9,10); pickup square.nib; draw z3..z4;
+ draw z5--z6--z7--z8; labels(3,4,5,6,7,8);
+endchar;
+
+beginchar(bbhebvow[4],8u#+2appr#,0,bot_skip#+dot_size#);
+ "Hebrew point hiriq";
+ center_bar(1,1');
+ top y1'=-bot_skip; top y1'-bot y1=dot_size; dot(1,1');
+endchar;
+
+beginchar(bbhebvow[5],8u#+2appr#,0,bot_skip#+dot_size#);
+ "Hebrew point tsere";
+ pickup circle.nib;
+ lft x1-apprl=w-apprr-rt x2'
+ =hround min(0.5u,0.5(w-apprl-apprr)-hthick-thin-dot_skip);
+ x1'-x1=x2'-x2=hthick;
+ top y1'=top y2'=-bot_skip; top y1'-bot y1=top y2'-bot y2=dot_size;
+ dot(1,1'); dot(2,2');
+endchar;
+
+beginchar(bbhebvow[6],8u#+2appr#,0,bot_skip#+heb_size2#);
+ "Hebrew point segol";
+ center_bar(3,3');
+ lft x1-apprl=w-apprr-rt x2'=hround 0.5u; x1'-x1=x2'-x2=hthick;
+ top y1'=bot y3+heb_size2=-bot_skip; y2=y1;
+ top y1'-bot y1=top y2'-bot y2=top y3'-bot y3=dot_size;
+ dot(1,1'); dot(2,2'); dot(3,3');
+endchar;
+
+beginchar(bbhebvow[7],8u#+2appr#,0,bot_skip#+thin#);
+ "Hebrew point patah";
+ center_bar(3,4); x3-x1=x2-x4=hround u;
+ top y1=top y2=-bot_skip; pickup square.nib;
+ draw z1..z2; labels(1,2);
+endchar;
+
+beginchar(bbhebvow[8],8u#+2appr#,0,bot_skip#+heb_size1#);
+ "Hebrew point qamats";
+ center_bar(4,5); x3=x4; x5=x6; x2-x5=x4-x1=hround u;
+ bot y4=bot y5=-d; top y1=-bot_skip; y1=y2=y3=y6;
+ pickup square.nib; draw z1..z2; draw z3--z4--z5--z6;
+ labels(1,2,3,4,5,6);
+endchar;
+
+beginchar(bbhebvow[9],8u#+2appr#,x_height#+top_skip#+dot_size#,0);
+ "Hebrew point holam";
+ italcorr asc_height#*slant-0.5u#;
+ pickup circle.nib; lft x1=apprl-hround u; x1'-x1=hthick;
+ top y1'=h; bot y1=h-dot_size; dot(1,1');
+endchar;
+
+beginchar(bbhebvow[11],8u#+2appr#,0,bot_skip#+heb_size2#);
+ "Hebrew point qubuts";
+ center_bar(2,2'); lft x1-apprl=w-apprr-rt x3'
+ =hround min(0,(w-apprl-apprr)/3-hthick-thin-0.5u);
+ x1'-x1=x3'-x3=hthick; top y1'=bot y3+heb_size2=-bot_skip;
+ top y1'-bot y1=top y2'-bot y2=top y3'-bot y3=dot_size;
+ y2=good.y 0.5[y1,y3]; dot(1,1'); dot(2,2'); dot(3,3');
+endchar;
+
+beginchar(bbhebvow[12],8u#+2appr#,
+ 0.5(-cap_height#+dot_size#)+x_height#,0);
+ "Hebrew point dagesh or mapiq";
+ pickup circle.nib;
+ top y3=top y4=h; top y3-bot y1=dot_size; y1=y2;
+ lft x1=lft x4=apprl; x2-x1=x3-x4=hthick;
+ pickup square.nib; draw z1--z2--z3--z4--cycle;
+ labels(1,2,3,4);
+endchar;
+
+beginchar(bbhebvow[13],8u#+2appr#,0,bot_skip#+heb_size1#);
+ "Hebrew point meteg";
+ center_bar(1,2); x1=x4; x2=x3;
+ bot y1=bot y2=-d; top y3=top y4=-bot_skip;
+ pickup square.nib; draw z1--z2--z3--z4--cycle;
+ labels(1,2,3,4);
+endchar;
+
+beginchar(bbhebvow[14],6u#,cap_height#,0);
+ "Hebrew punctuation maqaf (hyphen dash)";
+ italcorr .5x_height#*slant-.5u#;
+ penpos1(rule_thickness,90); penpos2(rule_thickness,90);
+ top y1r=top y2r=vround(.5h+.5rule_thickness); rt x2=hround(w-u);
+ lft x1=hround .2u; penstroke z1e--z2e; penlabels(1,2);
+endchar;
+
+% humm
+beginchar(bbhebvow[15],8u#+2appr#,x_height#+top_skip#+thin#,0);
+ "Hebrew point rafe";
+ italcorr charht*slant-1.5u#;
+ center_bar(3,4); x3-x1=x2-x4=hround u; top y1=top y2=h;
+ pickup square.nib; draw z1..z2; labels(1,2);
+endchar;
+
+beginchar(bbhebvow[16],5u#+2appr#,cap_height#,0);
+ "Hebrew punctuation paseq (vertical)";
+ italcorr .5x_height#*slant-.5u#;
+ penpos1(rule_thickness,0); penpos2(rule_thickness,0);
+ top y1=h; bot y2=0; x1l=x2l=hround(.5w-.5rule_thickness);
+ penstroke z1e--z2e; penlabels(1,2);
+endchar;
+
+beginchar(bbhebvow[17],8u#+2appr#,x_height#+top_skip#+dot_size#,0);
+ "Hebrew point shin dot";
+ italcorr charht*slant+0.5u#;
+ pickup circle.nib; rt x1'=w-apprr+hround u; x1'-x1=hthick;
+ bot y1'=x_height+top_skip; top y1'-bot y1=dot_size; dot(1,1');
+endchar;
+
+beginchar(bbhebvow[18],8u#+2appr#,x_height#+top_skip#+dot_size#,0);
+ "Hebrew point sin dot";
+ pickup circle.nib; lft x1=apprl-hround u; x1'-x1=hthick;
+ bot y1'=x_height+top_skip; top y1'-bot y1=dot_size; dot(1,1');
+endchar;
+
+beginchar(bbhebvow[19],5u#+2appr#,cap_height#,0);
+ "Hebrew punctuation sof pasuq (colon)";
+ if not(odd(w-apprl-apprr)): change_width; fi
+ x0=x0'=0.5[apprl,w-apprr]; y0=floor(h-dot_size/sqrt 2)+0.5;
+ h-y0=y0';
+ x3r-x1r=sqrt 2*(thick+thin)*(1++slant);
+ y2r-y4r=sqrt2*dot_size;
+ x0=x2r=x4r=0.5[x3r,x1r]; y0=y1r=y3r=0.5[y2r,y4r];
+ z1a-z1r=(diag_width(thin,z2r-z1r),0);
+ z1b-z1r=(diag_width(thin,z4r-z1r),0);
+ z3a-z3r=(-diag_width(thin,z2r-z3r),0);
+ z3b-z3r=(-diag_width(thin,z4r-z3r),0);
+ z2l-z1a=whatever*(z2r-z1r); z2l-z3a=whatever*(z2r-z3r);
+ z4l-z1b=whatever*(z4r-z1r); z4l-z3b=whatever*(z4r-z3r);
+ z2l-z1l=whatever*(z2r-z1r); z4l-z1l=whatever*(z4r-z1r);
+ z2l-z3l=whatever*(z2r-z3r); z4l-z3l=whatever*(z4r-z3r);
+ forsuffixes $=1,2,3,4:
+ z$'.r-z0'=z$.r-z0; z$'.l-z0'=z$.l-z0; endfor
+ penstroke z1e--z2e--z3e--z4e--cycle;
+ penstroke z1'.e--z2'.e--z3'.e--z4'.e--cycle;
+ penlabels(1,2,3,4,1',2',3',4'); labels(1a,1b,2a,2b);
+endchar;
+
+beginchar(bbhebvow[20],8u#+2appr#,x_height#+top_skip#+dot_size#,0);
+ "Hebrew mark upper dot";
+ pickup circle.nib; center_bar(1,1');
+ bot y1'=x_height+top_skip; top y1'-bot y1=dot_size; dot(1,1');
+endchar;
+
+standard_proofing;% restore extra_endchar.
+
+endinput;
+
+% from Bigelow and Holmes Unicode's Lucida
+
+beginchar(bbhebvow[23],8u#+2appr#,x_height#+top_skip#+dot_size#,0);
+ "Hebrew point breve";
+ center_bar(4,5); x4-x1=x3-x5=hround u; x2=0.5[x1,x3];
+ bot y2=x_height+top_skip; top y1-bot y2=dot_size; y1=y3=y4=y5;
+ draw z1 down_to_right z2 right_to_up z3;
+ square_end1(up); square_end3(up);
+ labels(1,2,3,4,5);
+endchar;
diff --git a/fonts/mbboard/source/mbbi10.mf b/fonts/mbboard/source/mbbi10.mf
new file mode 100644
index 0000000000..18155ce69c
--- /dev/null
+++ b/fonts/mbboard/source/mbbi10.mf
@@ -0,0 +1,18 @@
+% blackboard typefaces by Anthony Phan.
+% file: mbbi10.mf (parameters' file for 10 points italic fonts)
+% last modification: 25.10.2001.
+
+if unknown mbbbase: input mbbbase fi
+
+font_identifier:="mbbi"; font_size 10pt#;
+
+slant:=0.25;
+square_dots:=false;
+variant_a:=false; variant_f:=true;
+variant_g:=false; variant_y:=false;
+old_digits:=true; square_hebrew:=false;
+ab_up_factor:=0.05; ab_down_factor:=0.15;
+hmn_factor:=0.15; uy_factor:=0.15;
+
+input mbblight;
+input mbbdrivr; \ No newline at end of file
diff --git a/fonts/mbboard/source/mbblight.mf b/fonts/mbboard/source/mbblight.mf
new file mode 100644
index 0000000000..8986ed8680
--- /dev/null
+++ b/fonts/mbboard/source/mbblight.mf
@@ -0,0 +1,100 @@
+% blackboard typefaces by Anthony Phan.
+% file: mbblight.mf (parameters' file for all light fonts)
+% last modification: 25.10.2001.
+
+numeric gen_; gen_=0;
+for $=17pt#,12pt#,10pt#,9pt#,8pt#,7pt#,6pt#,5pt#:
+ if designsize<$: gen_:=gen_+1; fi
+endfor;
+
+vardef gen(expr unit)(text t)=
+ save a,b; a=0; for $=t:
+ if gen_>=a: b:=$; fi
+ a:=a+1; endfor; b*unit
+enddef;
+
+dh#:=0.6designsize;
+superness:=(9/256)[sqrt 0.5,1];
+superbowl:=(25/256)[sqrt 0.5,1];
+math_spread:=gen(1)(-0.4,-0.2,0.2,0.4,0.6,0.8,1);
+
+%
+% Specific parameters
+%
+
+thin1# :=gen(1/36pt#)(18,14,12,11.5,11,10.5,10,9.5);
+
+thick1# :=gen(1/36pt#)(43.5*(32.5/20),43.5*(23.5/20),43.5,0.8[30,43.5],
+ 0.6[30,43.5],0.4[30,43.5],0.2[30,43.5],0.0[30,43.5]);
+
+Thick1# :=gen(1/36pt#)(47.25*(32.5/20),43.5*(23.5/20),47.25,0.8[33.5,47.25],
+ 0.6[33.5,47.25],0.4[33.5,47.25],0.2[33.5,47.25],0.0[33.5,47.25]);
+
+thin2# :=gen(1/36pt#)(18,14,12,11.5,11,10.5,10,9.5);
+
+thick2# :=gen(1/36pt#)(44.75*(32.5/20),43.5*(23.5/20),44.75,0.8[31,44.75],
+ 0.6[31,44.75],0.4[31,44.75],0.2[31,44.75],0.0[31,44.75]);
+
+Thick2# :=gen(1/36pt#)(48.75*(32.5/20),43.5*(23.5/20),48.75,0.8[34.5,48.75],
+ 0.6[34.5,48.75],0.4[34.5,48.75],0.2[34.5,48.75],0.0[34.5,48.75]);
+
+ess# :=gen(1/36pt#)(45*(32.5/20),43.5*(23.5/20),45,0.8[31,45],
+ 0.6[31,45],0.4[31,45],0.2[31,45],0.0[31,45]);
+
+cap_ess# :=gen(1/36pt#)(49*(32.5/20),43.5*(23.5/20),49,0.8[35,49],
+ 0.6[35,49],0.4[35,49],0.8[35,49],0.2[35,49],0.0[35,49]);
+
+dot_size#:=gen(1/36pt#)(66*(32.5/20),43.5*(23.5/20),55,49.5,
+ 44,38.5,33,27.5);
+
+%
+% Relative (to Computer Modern) parameters
+%
+
+u#:=gen(1/36pt#)( 32.5, 23.5, 20, 18.5, 17, 15.5, 14, 12.5);
+letter_fit#:=gen(1/36pt#)( -0.1, 0, 0, 0, 0, 2, 3, 5);
+
+body_height# :=gen(1/36pt#)(466, 324, 270, 243, 216, 189, 162, 135);
+asc_height# :=gen(1/36pt#)(432, 300, 250, 225, 200, 175, 150, 125);
+cap_height# :=gen(1/36pt#)(425, 295.2, 246, 221.4, 196.8, 172.2, 147.6, 123);
+fig_height# :=gen(1/36pt#)(401, 278.4, 232, 208.8, 185.6, 162.4, 139.2, 116);
+x_height# :=gen(1/36pt#)(267.5, 186, 155, 139.5, 124, 108.5, 93, 77.5);
+math_axis# :=gen(1/36pt#)(155.5, 108, 90, 81, 72, 63, 54, 45);
+desc_depth# :=gen(1/36pt#)(121, 84, 70, 63, 56, 49, 42, 35);
+o# :=gen(1/36pt#)(10, 9, 8, 7, 6, 5, 4.5, 4);
+ho# :=gen(1/36pt#)(10, 9, 8, 7, 6, 5, 4.5, 4);
+
+rule_thickness#:=gen(1pt#)(0.60,0.44,0.4,0.38,0.36,0.34,0.31,0.28);
+
+endinput;
+
+%
+% Extra parameters (not usefull and wrong)
+%
+
+subs:=gen(1)(8/12,7/10,6/9,6/8,5/7,5/6,5/5);
+rth'#:=0.4pt#;
+fontdimen8:
+math_axis#+3.51rth'#+36/36pt#+subs*desc_depth#, % num1
+math_axis#+1.51rth'#+gen(1/36pt#)(30,30,30,24,12,9,3), % num2
+math_axis#+1.51rth'#+gen(1/36pt#)(48,48,43,38,34,29,24), % num3
+-(math_axis#-3.51rth'#-subs*fig_height#
+ -gen(1/36pt#)(124,124,111,98,86,74,63)), % denom1
+-(math_axis#-1.51rth'#-subs*fig_height#
+ -gen(1/36pt#)(30,30,30,24,12,9,3)), % denom2
+gen(1pt#)(8.99,8.99,8.49,7.49,6.99,6.49,5.99)-subs*asc_height#,% sup1
+gen(1pt#)(8.49,8.49,7.99,7.99,6.49,5.99,5.49)-subs*asc_height#,% sup2
+gen(1/36pt#)(104,104,), % sup3
+gen(1/36pt#)(54,54,36,36,36,36,,36), % sub1
+-(if gen_<3:if gen_<2: 8.49pt# else: 7.99pt# fi
+ -2subs*asc_height#-0.31rth'#
+ else: gen(1/36pt#)(0,0,72,72,72,72) fi), % sub2
+subs*asc_height#-36/36pt#, % sup_drop
+18/36pt#, % sub_drop
+gen(1pt#)( 23.9, 23.9, 23.9, 11.9, 11.9, 11.9, 9.9), % delim1
+gen(1pt#)( 10.1, 10.1, 9.1, 9.1, 8.1, 8.1, 7.1), % delim2
+math_axis#;
+
+
+
+
diff --git a/fonts/mbboard/source/mbbpunct.mf b/fonts/mbboard/source/mbbpunct.mf
new file mode 100644
index 0000000000..66a939f8fe
--- /dev/null
+++ b/fonts/mbboard/source/mbbpunct.mf
@@ -0,0 +1,549 @@
+% blackboard typefaces by Anthony Phan.
+% file: mbbpunct.mf (punctuation)
+% last modification: 25.10.2001.
+
+def horizontal_rules_list=
+ -body_depth,-desc_depth,x_height,cap_height,asc_height,body_height
+enddef;
+
+use_rule1;
+
+iff known bbnormal_space:
+beginchar(bbnormal_space,6u#+2letter_fit#,0,0);
+ "Normal space";
+endchar;
+
+iff known bbcompound_word_mark:
+beginchar(bbcompound_word_mark,0,x_height#,0);
+ "Compound word mark";
+endchar;
+
+beginchar(bbexclamation_point,hthick#+thin#+2appr#,
+ asc_height#,0);
+ "Exclamation point";
+ italcorr (asc_height#
+ if not square_dots: -0.4dot_size# fi)*slant-0.5u#;
+ center_bar(1,1'); bot y1=0; top y1'=dot_size; dot(1,1');
+ if square_dots: bot y2=vround 0.25[top y1',x_height];
+ y5=y2; x2=x3=x1; x4=x5=x1'; top y3=top y4=h;
+ pickup square.nib; draw z2--z3--z4--z5--cycle;
+ labels(2,3,4,5);
+ else: top y7=h+o; bot y2=vround 0.25[top y1',x_height];
+ y4-y2=0.25dot_size; y7-y6=0.5dot_size;
+ x2=x3=x4=x5=x6=x7=0.5[x1,x1'];
+ numeric a,r,R;
+ R=0.5max(dot_size-thin,0);
+ r=0.5max(0.5dot_size-thin,0);
+ a=(R-r)/(y6-y4);
+ y6-y5=R*a; y4-y3=r*a;
+ penpos6(hthick,0); penpos5(hthick*(1+-+a),0);
+ penpos3(0.5hthick*(1+-+a),0);
+ draw z2...z3r---z5r...z6r up_to_left z7
+ left_to_down z6l...z5l---z3l...cycle;
+ labels(2,4,6); penlabels(3,5,6); fi
+endchar;
+
+beginchar(bbspanish_shriek,hthick#+thin#+2appr#,
+ asc_height#-desc_depth#,desc_depth#);
+ "Spanish open exclamation point";
+ italcorr (asc_height#-desc_depth#
+ if not square_dots: -0.4dot_size# fi)*slant-0.5u#;
+ center_bar(1,1'); top y1=h; top y1-bot y1'=dot_size;
+ dot(1,1');
+ if square_dots: top y2=vround 0.25[bot y1',h-x_height];
+ y5=y2; x2=x3=x1; x4=x5=x1'; bot y3=bot y4=-d;
+ pickup square.nib; draw z2--z3--z4--z5--cycle;
+ labels(2,3,4,5);
+ else: bot y7=-d-o; top y2=vround 0.25[bot y1',h-x_height];
+ y4-y2=-0.25dot_size; y7-y6=-0.5dot_size;
+ x2=x3=x4=x5=x6=x7=0.5[x1,x1'];
+ numeric a,r,R;
+ R=0.5max(dot_size-thin,0);
+ r=0.5max(0.5dot_size-thin,0);
+ a=(R-r)/(y6-y4);
+ y6-y5=R*a; y4-y3=r*a;
+ penpos6(hthick,0); penpos5(hthick*(1+-+a),0);
+ penpos3(0.5hthick*(1+-+a),0);
+ draw z2...z3r---z5r...z6r up_to_left z7
+ left_to_down z6l...z5l---z3l...cycle;
+ labels(2,4,6); penlabels(3,5,6); fi
+endchar;
+
+beginchar(bbquestion_mark,8u#+2appr#,asc_height#,0);
+ "Question mark";
+ italcorr 0.9asc_height#*slant-0.5u#;
+ center_bar(1,2); bot y1=0; top y2=dot_size;
+ x5=x2; bot y3=vround 0.25[top y2,x_height];
+ x9=0.5[x1,x2]; top y9=h+o; rt x7=w-apprr+ho;
+ lft x11=apprl; slope:=2(y9-y3)/24u;
+ y5-y3=slope*(x5-x1); ellipse_set(9,7,6,5);
+ if square_dots: y4=y3; x12=x3=x1; x4=x2;
+ y5+y0-y12=slope*(x5+x0-x12);
+ else: x3=0.5[x1,x2]; x3a=0.25[x1,x2];
+ x4=0.75[x1,x2]; y4=y3a=0.5[y3,y5]; z12=z5+z0; fi
+ z0=(thick*unitvector((z6-z5)slanted slant)
+ rotated 90)slanted -slant;
+ x14=x7+x0; ellipse_set(9,14,13,12); bot y11=vround y7;
+ if square_dots:
+ y3l-y3=y3-y3r=y4l-y4=y4-y4r=0.5thin;
+ x3l-x3=x3-x3r=x4r-x4=x4-x4l=0.5thin*(1++slant);
+ x12l=x3l; x12r=x3r; x5r=x4r; x5l=x4l;
+ ortho_penpos6(thin,z6-z5); ortho_penpos13(thin,z12-z13);
+ z12l-z13l=whatever*(z12-z13); z12r-z13r=whatever*(z12-z13);
+ z5l-z6l=whatever*(z5-z6); z5r-z6r=whatever*(z5-z6);
+ penstroke z13e--z12e--z3e--z4e--z5e--z6e;
+ draw z9 right_to_down z14...{z12-z13}z13;
+ draw z6{z6-z5}...z7 up_to_left z9 left_to_down z11;
+ else: draw z9 right_to_down z14...z13---z12...z3a
+ ...z3{right}...z4...z5---z6...z7 up_to_left z9
+ left_to_down z11;
+ fi
+ dot(1,2); square_end11(down);
+ labels(3a,7,8,9,10,11,14,15); penlabels(3,4,5,6,12,13);
+endchar;
+
+beginchar(bbspanish_query,8u#+2appr#,
+ asc_height#-desc_depth#,desc_depth#);
+ "Spanish open question mark";
+% no italic correction
+ center_bar(2,1); top y1=h; bot y2=h-dot_size;
+ x5=x2; top y3=vround 0.25[bot y2,h-x_height];
+ x9=0.5[x1,x2]; bot y9=-d-o; lft x7=apprl-ho; rt x11=w-apprr;
+ slope:=-2(y9-y3)/24u;
+ y5-y3=slope*(x5-x1); ellipse_set(9,7,6,5);
+ if square_dots: y4=y3; x12=x3=x1; x4=x2;
+ y5+y0-y12=slope*(x5+x0-x12);
+ else: x3=0.5[x1,x2]; x3a=0.25[x1,x2]; x4=0.75[x1,x2];
+ y4=y3a=0.5[y3,y5]; z12=z5+z0; fi
+ z0=(thick*unitvector((z6-z5)slanted slant)
+ rotated 90)slanted -slant;
+ x14=x7+x0; ellipse_set(9,14,13,12); top y11=vround y7;
+ if square_dots:
+ y3l-y3=y3-y3r=y4l-y4=y4-y4r=-0.5thin;
+ x3l-x3=x3-x3r=x4r-x4=x4-x4l=-0.5thin*(1++slant);
+ x12l=x3l; x12r=x3r; x5r=x4r; x5l=x4l;
+ ortho_penpos6(thin,z6-z5); ortho_penpos13(thin,z12-z13);
+ z12l-z13l=whatever*(z12-z13); z12r-z13r=whatever*(z12-z13);
+ z5l-z6l=whatever*(z5-z6); z5r-z6r=whatever*(z5-z6);
+ penstroke z13e--z12e--z3e--z4e--z5e--z6e;
+ draw z9 left_to_up z14{up}...{z12-z13}z13;
+ draw z6{z6-z5}...z7 down_to_right z9 right_to_up z11;
+ else: draw z9 left_to_up z14{up}...z13---z12...z3a
+ ...z3{left}...z4...z5---z6...z7 down_to_right z9
+ right_to_up z11;
+ fi
+ dot(1,2); square_end11(up);
+ labels(3a,7,8,9,10,11,14,15); penlabels(3,4,5,6,12,13);
+endchar;
+
+beginchar(bbasterisk,7u#+2appr#,body_height#,0);
+ "Asterisk";
+ italcorr body_height#*slant-.5u#;
+ numeric a,b; a=round(x_height/(1+cosd 36)); b=vround 0.85thin;
+ x0=floor(w/2)+0.5; y0=h-a; x1r=x0; y1r=h+0.5;
+ y3r=y9r=vround(y0+a*cosd 72); x3r-x0=x0-x9r=round(a*sind 72);
+ y5r=y7r=vround(y0+a*cosd 144)-0.5; x5r-x0=x0-x7r=hround(a*sind 144);
+ for i=0 upto 4: z[1+2i]l=z[1+2i]r
+ +unitvector((z[1+(2i+4)mod 10]r-z[1+2i]r)slanted slant)
+ rotated -90 scaled b slanted -slant
+ +whatever*(z[1+(2i+4)mod 10]r-z[1+2i]r);
+ z[1+2i]l=z[1+2i]r
+ +unitvector((z[1+(2i-4)mod 10]r-z[1+2i]r)slanted slant)
+ rotated 90 scaled b slanted -slant
+ +whatever*(z[1+(2i-4)mod 10]r-z[1+2i]r);
+ endfor
+ for i=0 upto 4:
+ z[2i+2]r=whatever[z[2i+1]r,z[(2i+5)mod 10]r];
+ z[2i+2]r=whatever[z[(2i-1)mod 10]r,z[(2i+3)mod 10]r];
+ z[2+2i]l=whatever[z[1+2i]l,z[1+(2i+4)mod 10]l];
+ z[2+2i]l=whatever[z[1+(2i-2)mod 10]l,z[1+(2i+2)mod 10]l];
+ endfor
+ penstroke for i=0 upto 4: z[1+2i]e--z[2+2i]e-- endfor cycle;
+ penlabels(0,1,2,3,4,5,6,7,8,9,10);
+endchar;
+
+beginchar(bbperiod,hthick#+thin#+2appr#,dot_size#,0);
+ "Period";
+ italcorr (dot_size# if not square_dots: -0.4dot_size# fi)*slant-0.5u#;
+ center_bar(1,1'); bot y1=0; top y1'=dot_size; dot(1,1');
+endchar;
+
+beginchar(bbcomma,hthick#+thin#+2appr#,
+ dot_size#,comma_size#-dot_size#);
+ "Comma";
+ italcorr (dot_size# if not square_dots: -0.4dot_size# fi)*slant-0.5u#;
+ center_bar(5,3); top y4=dot_size; lft x1=apprl-hround u;
+ top y4-bot y1=comma_size; complete_comma;
+endchar;
+
+beginchar(bbsemicolon,hthick#+thin#+2appr#,
+ x_height#,comma_size#-dot_size#);
+ "Semicolon";
+ italcorr (x_height# if not square_dots: -0.4dot_size# fi)*slant-0.5u#;
+ center_bar(5,3); top y4=dot_size; lft x1=apprl-hround u;
+ top y4-bot y1=comma_size; complete_comma;
+ pickup circle.nib; x7=x5; x7'=x3; top y7'=h;
+ bot y7=h-dot_size; dot(7,7');
+endchar;
+
+beginchar(bbcolon,hthick#+thin#+2appr#,x_height#,0);
+ "Colon";
+ italcorr (x_height# if not square_dots: -0.4dot_size# fi)*slant-0.5u#;
+ center_bar(1,1'); x2=x1; x2'=x1'; bot y1=0; top y2'=h;
+ top y1'-bot y1=top y2'-bot y2=dot_size; dot(1,1'); dot(2,2');
+endchar;
+
+iff known bbhyphenchar:
+beginchar(bbhyphenchar,4u#+2appr#,x_height#,0);
+ "hyphenchar";
+ italcorr .5x_height#*slant-.5u#;
+ penpos1(rule_thickness,90); penpos2(rule_thickness,90);
+ top y1r=top y2r=vround(.5h+.5rule_thickness);
+ rt x2=w-apprr; lft x1=apprl-hround .8u;
+ penstroke z1e--z2e; penlabels(1,2);
+endchar;
+
+iff known bbdash:
+beginchar(bbdash,4u#+2appr#,x_height#,0);
+ "dash";
+ italcorr .5x_height#*slant-.1u#;
+ penpos1(rule_thickness,90); penpos2(rule_thickness,90);
+ top y1r=top y2r=vround(.5h+.5rule_thickness);
+ rt x2=w-apprr+hround 0.4u; lft x1=apprl-hround .4u;
+ penstroke z1e--z2e; penlabels(1,2);
+endchar;
+
+beginchar(bben_dash,9u#+2letter_fit#,x_height#,0);
+ "En dash";
+ italcorr 0.61803x_height#*slant+0.5u#;
+ penpos1(thin,90); penpos2(thin,90);
+ y1r=y2r=good.y(y1r+0.61803h-y1);
+ x1=w-x2=hround 0.5(w-9u);
+ penstroke z1e..z2e; penlabels(1,2);
+endchar;
+
+beginchar(bbem_dash,18u#+4letter_fit#,x_height#,0);
+ "Em dash";
+ italcorr 0.61803x_height#*slant+0.5u#;
+ penpos1(thin,90); penpos2(thin,90);
+ y1r=y2r=good.y(y1r+0.61803h-y1);
+ x1=w-x2=hround 0.5(w-18u);
+ penstroke z1e..z2e; penlabels(1,2);
+endchar;
+
+iff known bbunderscore:
+beginchar(bbunderscore,18u#+4letter_fit#,0,paren_depth#);
+ "Underscore";
+ % no italic correction
+ penpos1(thin,90); penpos2(thin,90);
+ y1l=y2l=-d; x1=w-x2=hround 0.5(w-18u);
+ penstroke z1e..z2e; penlabels(1,2);
+endchar;
+
+beginchar(bbapostrophe,hthick#+thin#+2appr#,asc_height#,0);
+ "Apostrophe";
+ italcorr (asc_height# if not square_dots: -0.4dot_size# fi)*slant-0.5u#;
+ center_bar(5,3); top y4=h; lft x1=apprl-hround u;
+ top y4-bot y1=comma_size; complete_comma;
+endchar;
+
+beginchar(bbreverse_apostrophe,hthick#+thin#+2appr#,asc_height#,0);
+ "Reverse apostrophe";
+ italcorr asc_height#*slant+0.5u#;
+ center_bar(3,5); top y1=h; rt x1=w-apprr+hround u;
+ top y1-bot y4=comma_size; complete_comma;
+endchar;
+
+beginchar(bbopening_quotes,7u#+2appr#,asc_height#,0);
+ "Opening quotes";
+ italcorr asc_height#*slant+0.5u#;
+ pickup circle.nib;
+ rt x5=w-apprr; x5-x3=hthick; top y1=h; rt x1=hround(w-apprr+u);
+ top y1-bot y4=comma_size; complete_comma;
+ addto currentpicture
+ also currentpicture shifted (apprl-lft x3,0);
+endchar;
+
+beginchar(bbclosing_quotes,7u#+2appr#,asc_height#,0);
+ "Closing quotes";
+ italcorr (asc_height# if not square_dots: -0.4dot_size# fi)*slant-0.5u#;
+ pickup circle.nib;
+ lft x5=apprl; x3-x5=hthick; top y4=h; lft x1=hround(apprl-u);
+ top y4-bot y1=comma_size; complete_comma;
+ addto currentpicture
+ also currentpicture shifted (w-apprr-rt x3,0);
+endchar;
+
+iff known bbgerman_opening_comma:
+beginchar(bbgerman_opening_comma,
+ hthick#+thin#+2appr#,dot_size#,comma_size#-dot_size#);
+ italcorr (dot_size# if not square_dots: -0.4dot_size# fi)*slant-0.5u#;
+ "German opening comma";
+ center_bar(5,3); top y4=dot_size; lft x1=apprl-hround u;
+ top y4-bot y1=comma_size; complete_comma;
+endchar;
+
+iff known bbgerman_opening_quotes:
+beginchar(bbgerman_opening_quotes,7u#+2appr#,dot_size#,
+ comma_size#-dot_size#);
+ "German opening quotes";
+ italcorr (dot_size# if not square_dots: -0.4dot_size# fi)*slant-0.5u#;
+ pickup circle.nib;
+ lft x5=apprl; x3-x5=hthick; top y4=h;
+ lft x1=hround(apprl-u); top y4-bot y1=comma_size;
+ complete_comma;
+ addto currentpicture
+ also currentpicture shifted (w-apprr-rt x3,0);
+endchar;
+
+iff known bbstraight_quotes:
+beginchar(bbstraight_quotes,7u#+2appr#,asc_height#,0);
+ "Straight quotes";
+ italcorr (asc_height# if not square_dots: -0.4dot_size# fi)*slant-0.5u#;
+ pickup circle.nib;
+ if square_dots:
+ lft x1-apprl=w-apprr-rt x6=0; x1=x4; x6=x7;
+ x2-x1=x3-x4=x6-x5=x7-x8=hthick;
+ top y3=h; y3=y4=y7=y8; top y1=x_height; y1=y2=y5=y6;
+ pickup square.nib; draw z1--z2--z3--z4--cycle;
+ draw z5--z6--z7--z8--cycle; labels(1,2,3,4,5,6,7,8);
+ else:
+ y1=y3=x_height-thin+0.25dot_size; y2=y4=h-0.5dot_size;
+ x1=x2=apprl+0.5(thin+hthick); x3=x4=w-apprr-0.5(thin+hthick);
+ long_dot(1,2); long_dot(3,4);
+ fi
+endchar;
+
+if (known bbfso_quotes)or(known bbfsc_quotes)
+ or(known bbfdo_quotes)or(known bbfdc_quotes):
+ def complete_quote(expr $,$$,$$$)=
+ h-y[$]r=y[$+2]r=hround 0.06h; y[$+1]l=0.5[y[$]r,y[$+2]r];
+ x[$]r=x[$+2]r=x[$+1]l if $$$>0: + else:- fi(hround 4u+2eps)=$$;
+ adjust_slanted_bar([$+1]l,[$]r,[$+1]a,[$]l)
+ (thin,if $$$>0: -1 else: 1 fi);
+ adjust_slanted_bar([$+1]l,[$+2]r,[$+1]b,[$+2]l)
+ (thin,if $$$>0:1 else: -1 fi);
+ z[$+1]r-z[$]r=whatever*(z[$+1]l-z[$]l);
+ z[$+1]r-z[$+2]r=whatever*(z[$+1]l-z[$+2]l);
+ penstroke z[$]e--z[$+1]e--z[$+2]e;
+ penlabels([$],[$+1],[$+2]); labels([$+1]a,[$+1]b);
+ enddef;
+fi
+
+iff known bbfso_quotes:
+beginchar(bbfso_quotes,6u#+2appr#,x_height#,0);
+ "French single opening quote";
+ italcorr x_height#*slant-0.5u#;
+ complete_quote(1,w-apprr-hround u+eps,1);
+endchar;
+
+iff known bbfsc_quotes:
+beginchar(bbfsc_quotes,6u#+2appr#,x_height#,0);
+ "French single closing quote";
+% no italic correction
+ complete_quote(1,apprl+hround u-eps,-1);
+endchar;
+
+iff known bbfdo_quotes:
+beginchar(bbfdo_quotes,8u#+2appr#,x_height#,0);
+ "French double opening quote";
+ italcorr x_height#*slant-0.5u#;
+ complete_quote(1,w-apprr+eps,1);
+ complete_quote(4,w-apprr-hround 3u+eps,1);
+endchar;
+
+iff known bbfdc_quotes:
+beginchar(bbfdc_quotes,8u#+2appr#,x_height#,0);
+ "French double closing quote";
+% no italic correction
+ complete_quote(1,apprl-eps,-1);
+ complete_quote(4,apprl+hround 3u-eps,-1);
+endchar;
+
+%
+% delimiters (see bbbigdel.mf if it still exists)
+%
+
+iff known parenthesis_left:
+beginchar(parenthesis_left,5.5u#+2appr#,body_height#,paren_depth#);
+ "Left parenthesis";
+ pickup circle.nib;
+ top y1=h; bot y3=-d; y2=0.5[y1,y3];
+ rt x1=rt x3=w-apprr; x4-x2=hthick;
+ lft x2=min(apprl+hround u-ho,
+ hround 0.5(w+apprl-apprr-thin-hthick)-eps);
+ tmp_path:=z1{3(x2-x1),y2-y1}...z2{down}...z3{3(x3-x2),y3-y2};
+ z4=tmp_path intersectionpoint ((x4,y1)..(x4,y2));
+ z5=tmp_path intersectionpoint ((x4,y3)..(x4,y2));
+ draw tmp_path; draw z4..z5;
+ square_end1((3(x1-x2),y1-y2));
+ square_end3((3(x3-x2),y3-y2));
+ labels(1,2,3,4,5);
+endchar;
+
+iff known parenthesis_right:
+beginchar(parenthesis_right,5.5u#+2appr#,body_height#,paren_depth#);
+ "Right parenthesis";
+ pickup circle.nib;
+ top y1=h; bot y3=-d; y2=0.5[y1,y3];
+ lft x1=lft x3=apprl; x4-x2=-hthick;
+ rt x2=max(w-apprr-hround u+ho,
+ hround 0.5(w+apprl-apprr+thin+hthick)+eps);
+ tmp_path:=z1{3(x2-x1),y2-y1}...z2{down}...z3{3(x3-x2),y3-y2};
+ z4=tmp_path intersectionpoint ((x4,y1)..(x4,y2));
+ z5=tmp_path intersectionpoint ((x4,y3)..(x4,y2));
+ draw tmp_path; draw z4..z5;
+ square_end1((3(x1-x2),y1-y2));
+ square_end3((3(x3-x2),y3-y2));
+ labels(1,2,3,4,5);
+endchar;
+
+def tmp_program(expr orientation,top_f,bot_f)=
+ save a;
+ a=hround(thin*(1++slant));
+ y6r=h; y8r=-d-1; y5r=top_f[y6r,y8r]; y7r=bot_f[y8r,y6r];
+ if orientation=left:
+ forsuffixes @#=1,2,3,4: x@#r-x@#=x@#-x@#l=-0.5a; endfor
+ x1r=x2r=x5r=x7r=min(apprl+hround u,
+ hround 0.5(w+apprl-apprr-a-hthick));
+ x1-x3=x2-x4=-hthick; x6r=x8r=w-apprr+hround 0.5u;
+ else:
+ forsuffixes @#=1,2,3,4: x@#r-x@#=x@#-x@#l=0.5a; endfor
+ x1r=x2r=x5r=x7r=max(w-apprr-hround u,
+ hround 0.5(w+apprl-apprr+a+hthick));
+ x1-x3=x2-x4=hthick; x6r=x8r=apprl-hround 0.5u;
+ fi
+ forsuffixes @=1,1r,1l,3,3r,3l: z@=whatever[z5r,z6r]; endfor
+ forsuffixes @=2,2r,2l,4,4r,4l: z@=whatever[z7r,z8r]; endfor
+ penpos5(thin/abs cosd angle((z6r-z5r)slanted slant),90);
+ penpos6(thin/abs cosd angle((z6r-z5r)slanted slant),90);
+ penpos7(thin/abs cosd angle((z8r-z7r)slanted slant),-90);
+ penpos8(thin/abs cosd angle((z8r-z7r)slanted slant),-90);
+ penstroke z1e..z2e; penstroke z3e..z4e;
+ penstroke z5e..z6e; penstroke z7e..z8e;
+ penlabels(1,2,3,4,5,6,7,8);
+enddef;
+
+iff known bracket_left:
+beginchar(bracket_left,5.5u#+2appr#,body_height#,paren_depth#);
+ "Left bracket";
+ tmp_program(left,0,0);
+endchar;
+
+iff known bracket_right:
+beginchar(bracket_right,5.5u#+2appr#,body_height#,paren_depth#);
+ "Right bracket";
+ tmp_program(right,0,0);
+endchar;
+
+iff known angle_left:
+beginchar(angle_left,5.5u#+2appr#,body_height#,paren_depth#);
+ "Left angle bracket";
+ tmp_program(left,.15,.15);
+endchar;
+
+iff known angle_right:
+beginchar(angle_right,5.5u#+2appr#,body_height#,paren_depth#);
+ "Right angle angle";
+ tmp_program(right,.15,.15);
+endchar;
+
+vardef tmp_program(expr orientation)=
+ path tmppp_path,tmpppp_path;
+ pickup circle.nib;
+ if orientation=left:
+ lft x1=apprl-hround 0.5u;
+ rt x4r=w-apprr+hround 0.5u;
+ x6r=good.x 0.5(x1+x4r-hthick); x3r-x6r=hthick;
+ else:
+ rt x1=w-apprr+hround 0.5u;
+ lft x4r=apprl-hround 0.5u;
+ x6r=good.x 0.5(x1+x4r+hthick); x3r-x6r=-hthick;
+ fi
+ x2-x1=x4r-x5r=0.25(x6r-x1);
+ x3r=x3l; x4l=x4r; x5r=x5l; x6r=x6l;
+ y1=y2=good.y 0.5[-d,h];
+ top y4r=top y5r=h; y1-y4l=y1-y5l=y4r-y1;
+ y5r-y6r=y3r-y1=y6l-y5l=y1-y3l=min(0.4(y5r-y1),0.75dh);
+ tmp_path:=z1..z2 right_to_up z3r;
+ tmpp_path:=z4r..z5r left_to_down z6r;
+ tmppp_path=z2 right_to_down z3l;
+ tmpppp_path=z4l..z5l left_to_up z6l;
+ draw tmp_path; draw tmpp_path;
+ draw tmppp_path; draw tmpppp_path;
+ hbbowl(z2,z3r,(x3r,y6r),abs(x3r-x6r)) tmp_path;
+ hbbowl(z2,z3l,(x3l,y6l),abs(x3l-x6l)) tmppp_path;
+ hbbowl(z5r,z6r,(x6r,y3r),abs(x3r-x6r)) tmpp_path;
+ hbbowl(z5l,z6l,(x6l,y3l),abs(x3l-x6l)) tmpppp_path;
+ square_end1((x1-x4r,0));
+ square_end4r((x4r-x1,0));
+ square_end4l((x4l-x1,0));
+ penlabels(1,2,3,4,5,6);
+enddef;
+
+iff known brace_left:
+beginchar(brace_left,5.5u#+2appr#,body_height#,paren_depth#);
+ "Left brace";
+ tmp_program(left);
+endchar;
+
+iff known brace_right:
+beginchar(brace_right,5.5u#+2appr#,body_height#,paren_depth#);
+ "Right brace";
+ tmp_program(right);
+endchar;
+
+% the widths of the two next characters are calculated
+% to fit computer modern corresponding ones.
+
+iff known vertical:
+beginchar(vertical,3u#+2appr#,body_height#,paren_depth#);
+ "Vertical";
+ save a; a=hround(thin*(1++slant));
+ penpos1(a,0); penpos2(a,0); penpos3(a,0); penpos4(a,0);
+ penpos5(thin,90); penpos6(thin,90); penpos7(thin,90); penpos8(thin,90);
+ x1l=x2l=x5r=x7l=hround 0.5(w+apprl-apprr-hthick-a);
+ x3r=x4r=x6r=x8l=x1l+hthick+a;
+ y1=y3=y5r=y6r=h+1; y2=y4=y7l=y8l=-d-1;
+ penstroke z1e..z2e; penstroke z3e..z4e;
+ penstroke z5e..z6e; penstroke z7e..z8e;
+ penlabels(1,2,3,4,5,6,7,8);
+endchar;
+
+numeric slash_width#;
+slash_width#=(7u#-rule_thickness#)
+*((body_height#+paren_depth#)/(body_height#+paren_depth#-rule_thickness#))
++diag_width(thick#,
+ (7u#-rule_thickness#,body_height#+paren_depth#-rule_thickness#));
+
+beginchar(bbslash,slash_width#+2appr#,
+ body_height#,paren_depth#);
+ "Slash";
+ italcorr body_height#*slant-.5u#;
+ x1r=w-apprr+0.5u; x4l=apprl-0.5u; y1r=h; y4l=-d;
+ adjust_slanted_bar(1r,4l,2l,3r)(thick+thin,-1);
+ a:=diag_width(thin,z1r-z3r);
+ penpos1(a,0); penpos2(a,0); penpos3(a,0); penpos4(a,0);
+ y1-y1a=thin; z1a=whatever[z1,z3]; z1-z1a=z2-z2a=z3a-z3=z4a-z4;
+ penstroke z1e..z3e; penstroke z2e..z4e; fill z1--z2--z2a--z1a--cycle;
+ fill z3--z4--z4a--z3a--cycle; penlabels(1,2,3,4); labels(1a,2a,3a,4a);
+endchar;
+
+numeric slash_width#;
+slash_width#=(7u#-rule_thickness#)
+*((body_height#+paren_depth#)/(body_height#+paren_depth#-rule_thickness#))
++diag_width(thick#,
+ (-7u#+rule_thickness#,body_height#+paren_depth#-rule_thickness#));
+
+beginchar(bbback_slash,slash_width#+2appr#,
+ body_height#,paren_depth#);
+ "Backlash";
+ italcorr body_height#*slant-.5u#;
+ x1l=apprl-0.5u; x4r=w-apprr+0.5u; y1l=h; y4r=-d;
+ adjust_slanted_bar(1l,4r,2r,3l)(thick+thin,1);
+ a:=diag_width(thin,z1l-z3l);
+ penpos1(a,0); penpos2(a,0); penpos3(a,0); penpos4(a,0);
+ y1-y1a=thin; z1a=whatever[z1,z3]; z1-z1a=z2-z2a=z3a-z3=z4a-z4;
+ penstroke z1e..z3e; penstroke z2e..z4e; fill z1--z2--z2a--z1a--cycle;
+ fill z3--z4--z4a--z3a--cycle; penlabels(1,2,3,4); labels(1a,2a,3a,4a);
+endchar;
diff --git a/fonts/mbboard/source/mbbr10.mf b/fonts/mbboard/source/mbbr10.mf
new file mode 100644
index 0000000000..4969e7c2f1
--- /dev/null
+++ b/fonts/mbboard/source/mbbr10.mf
@@ -0,0 +1,23 @@
+% blackboard typefaces by Anthony Phan.
+% file: mbbr10.mf (parameters' file for 10 points roman fonts)
+% last modification: 25.10.2001.
+
+if unknown mbbbase: input mbbbase fi
+
+font_identifier:="mbb"; font_size 10pt#;
+
+slant:=0;
+square_dots:=false;
+straight_bowl:=false;
+%numeric bowl_max_height;
+math_fitting:=false;
+variant_a:=true; variant_f:=false;
+variant_g:=false; variant_y:=false;
+old_digits:=false; square_hebrew:=true;
+ab_up_factor:=0.05; ab_down_factor:=0.15;
+hmn_factor:=0.3;
+uy_factor:=0.15;
+def extra_font_setup=bowl_max_height:=x_height-thin enddef;
+
+input mbblight;
+input mbbdrivr; \ No newline at end of file
diff --git a/fonts/mbboard/source/mbbrbx10.mf b/fonts/mbboard/source/mbbrbx10.mf
new file mode 100644
index 0000000000..a5c9da5476
--- /dev/null
+++ b/fonts/mbboard/source/mbbrbx10.mf
@@ -0,0 +1,23 @@
+% blackboard typefaces by Anthony Phan.
+% file: mbbrbx10.mf (parameters' file for 10 points roman fonts)
+% last modification: 25.10.2001.
+
+if unknown mbbbase: input mbbbase fi
+
+font_identifier:="mbb"; font_size 10pt#;
+
+slant:=0;
+square_dots:=false;
+straight_bowl:=false;
+%numeric bowl_max_height;
+math_fitting:=false;
+variant_a:=true; variant_f:=false;
+variant_g:=false; variant_y:=false;
+old_digits:=false; square_hebrew:=true;
+ab_up_factor:=0.05; ab_down_factor:=0.15;
+hmn_factor:=0.3;
+uy_factor:=0.15;
+def extra_font_setup=bowl_max_height:=x_height-thin enddef;
+
+input mbbxbold;
+input mbbdrivr; \ No newline at end of file
diff --git a/fonts/mbboard/source/mbbromlg.mf b/fonts/mbboard/source/mbbromlg.mf
new file mode 100644
index 0000000000..16c326d35b
--- /dev/null
+++ b/fonts/mbboard/source/mbbromlg.mf
@@ -0,0 +1,191 @@
+% blackboard typefaces by Anthony Phan.
+% file: mbbromlg.mf (truly ligatured letters)
+% last modification: 25.10.2001.
+
+def horizontal_rules_list=
+ -body_depth,-desc_depth,0.5x_height,x_height,cap_height,
+ asc_height,body_height
+enddef;
+
+use_rule1;
+
+% Special rules govern `f'-ligatures. First `f'-width is
+% hthick#+thin#+u#+2appr#, the middle bar is 2u# large.
+% For `ff' or `fi' or `fl', the two vertical stems should
+% be as distant as in `n'. Furthermore, those stems should
+% be as distant as two adjacent `i', so the letter_fit#
+% as to be taken into account. Then, I take the maximum.
+% Alas, those rules are not very stable at low resolution.
+
+beginchar(bblig_ff,max(9u#+2appr#,2hthick#+2thin#+u#+4appr#),
+ asc_height#,if variant_f: desc_depth# else: 0 fi);
+ "The ligature ff";
+ italcorr asc_height#*slant+1.5u#;
+ pickup circle.nib; lft x1=apprl; rt x4=w-apprr-hround u;
+ x2-x1=x4-x3=hthick; x5=x2; x6=x3; x7=x4; x8-x7=hround 2u;
+ top y5=x_height; y5=y6=y7=y8; draw z5..z6; draw z7..z8;
+ complete_f_stroke(1,2,hround 3u,true);
+ complete_f_stroke(3,4,hround 3u,true);
+ square_end8(right);
+ labels(5,6,7,8);
+endchar;
+
+beginchar(bblig_fi,max(8u#+2appr#,2hthick#+2thin#+4appr#),
+ asc_height#,if variant_f: desc_depth# else: 0 fi);
+ "The ligature f_i";
+ if square_dots: italcorr asc_height#*slant-.5u#;
+ else: italcorr (asc_height#-0.4dot_size#)*slant-.5u#; fi
+ pickup circle.nib;
+ lft x1=apprl; rt x4=w-apprr; x2-x1=x4-x6=hthick;
+ x3=x2; x4=x5=x8; x6=x7=x9;
+ top y3=x_height; y3=y4=y7; bot y5=bot y6=0;
+ top y8=h; top y8-bot y9=dot_size;
+ draw z3..z4; draw z6..z7;
+ complete_f_stroke(1,2,x9-x2,false);
+ pickup square.nib; draw z4--z5--z6--z7;
+ if square_dots: z8.a=(x8,y9);
+ draw z1.a--z8--z8.a--z9--cycle;
+ else: pickup circle.nib; x8.a=x9.a=0.5[x8,x9];
+ y8.b=y9.b=0.5[y9,y8]; y8=y8.a; x8=x8.b; y9=y9.a; x9=x9.b;
+ draw z1.a..z8.a right_to_down z8.b down_to_left z9.a
+ left_to_up z9.b..z1.a; labels(8.b,9.a,9.b);
+ fi
+ labels(3,4,5,6,7,8,8.a,9);
+endchar;
+
+beginchar(bblig_fl,max(8u#+2appr#,2hthick#+2thin#+4appr#),
+ asc_height#,if variant_f: desc_depth# else: 0 fi);
+ "The ligature fl";
+ italcorr asc_height#*slant-0.5u#;
+ pickup circle.nib; lft x1=apprl; rt x3=rt x4=w-apprr;
+ x2-x1=x4-x5=hthick; x6=x2; x7=x5;
+ top y6=top y7=x_height; top y3=h; bot y4=bot y5=0;
+ draw (x5,y3)..z3; draw z6..z7;
+ complete_f_stroke(1,2,x5-x2,false);
+ pickup square.nib; draw z3--z4--z5--z1.a;
+ labels(3,4,5,6,7);
+endchar;
+
+beginchar(bblig_ffl,max(16u#-hthick#-thin#+2appr#,
+ 3hthick#+3thin#+6appr#),
+ asc_height#,if variant_f: desc_depth# else: 0 fi);
+ "The ligature ffl";
+ italcorr asc_height#*slant-0.5u#;
+ center_bar(3,4); lft x1=apprl; rt x5=rt x6=w-apprr;
+ x2-x1=x6-x7=hthick; x8=x2; x9=x3; x10=x4; x11=x7;
+ top y8=x_height; y8=y9=y10=y11; top y5=h; bot y6=bot y7=0;
+ draw (x7,y5)..z5; draw z8..z9; draw z10..z11;
+ complete_f_stroke(1,2,hround 3u,true);
+ complete_f_stroke(3,4,x7-x4,false);
+ pickup square.nib; draw z5--z6--z7--z3.a;
+ labels(5,6,7,6,7,8,9,10,11);
+endchar;
+
+beginchar(bblig_ffi,max(16u#-hthick#-thin#+2appr#,
+ 3hthick#+3thin#+6appr#),
+ asc_height#,if variant_f: desc_depth# else: 0 fi);
+ "The ligature ffi";
+ if square_dots: italcorr asc_height#*slant-.5u#;
+ else: italcorr (asc_height#-0.4dot_size#)*slant-.5u#; fi
+ center_bar(3,4);
+ lft x1=apprl; rt x8=w-apprr; x2-x1=x8-x10=hthick;
+ x5=x2; x6=x3; x7=x4; x8=x9=x12; x10=x11=x13;
+ top y5=x_height; y5=y6=y7=y8=y11; bot y9=bot y10=0;
+ top y12=h; top y12-bot y13=dot_size;
+ draw z5..z6; draw z7..z8;
+ complete_f_stroke(1,2,hround 3u,true);
+ complete_f_stroke(3,4,x13-x4,false);
+ pickup square.nib; draw z8--z9--z10--z11;
+ if square_dots: z12.a=(x12,y13);
+ draw z3.a--z12--z12.a--z13--cycle;
+ else: pickup circle.nib; x12.a=x13.a=0.5[x12,x13];
+ y12.b=y13.b=0.5[y13,y12]; y12=y12.a;
+ x12=x12.b; y13=y13.a; x13=x13.b;
+ draw z3.a..z12.a right_to_down z12.b down_to_left z13.a
+ left_to_up z13.b..z3.a; labels(12.b,13.a,13.b);
+ fi
+ labels(5,6,7,8,9,10,11,12,12.a,13);
+endchar;
+
+iff known bblig_ct:
+beginchar(bblig_ct,13u#+4appr#,min(asc_height#,10/7x_height#),0);
+ "The ligature ct";
+ italcorr x_height#*slant-0.5thin#-0.5u#;
+ pickup circle.nib;
+ numeric t_w; t_w=hround((2appr#+6u#)*hppp);
+% the "t" part
+ rt x1=rt x2=w-apprr; x3=0.5[x2,x4];
+ lft x4=lft x5=w-t_w+apprl; rt x8=floor x1;
+ top y7=top y8=x_height; bot y3=-oo;
+ top y5=h; y2=y4=0.3[y3,y8];
+ top y1=max(vround 0.42x_height,top y2);
+ tmp_path:=z1..z2 down_to_left z3 left_to_up z4..z5;
+ % the "c" part
+ x11=x15=w-apprr-t_w; lft x13=apprl-ho;
+ top y12=x_height+uo; bot y14=-oo; y13=0.5[y14,y12];
+ y11=0.707[y13,y12]; y15=0.707[y13,y14];
+ tmpp_path:=reverse elliptic_arc(13,12,11)&elliptic_arc(13,14,15);
+ % the ligature part
+ top y20=top y23=h; z20=whatever[z11',z11];
+ z22=0.5[z20,0.5[z11,z5]];
+ z21=0.25[z11,z20]; z23=0.25[z5,z20];
+ draw z11---z21...z22{z5-z11}...z23---z5;
+ draw tmp_path; draw tmpp_path;
+ bbbowl(z12,z13,z14,hThick) tmpp_path;
+ hbbowl(z3,z4,z5,hthick) tmp_path;
+ x7=rt x.bowl.mid;
+ pickup square.nib;
+ draw z7..z8; draw z5..z.bowl.bot;
+ square_end1(up);
+ square_end11(z11-z11');
+ square_end15(z15-z15');
+ labels(range 0 thru 23,11',15');
+endchar;
+
+iff known bblig_st:
+beginchar(bblig_st,13u#+4appr#,min(asc_height#,10/7x_height#),0);
+ "The ligature st";
+ italcorr x_height#*slant-0.5thin#-0.5u#;
+ numeric t_w; t_w=hround((2appr#+6u#)*hppp);
+ pickup circle.nib;
+% the "s" part
+ slope:=-x_height/24u; y5=0.52[y8,y2];
+ top y2=x_height+uo; bot y8=-oo;
+ y2-y1=vround 0.12x_height; y9-y8=vround 0.175x_height;
+ lft x3l=lft x9-(0.5thin*(sqrt2-1))=apprl-ho;
+ rt x7r=hround((7u#+2appr#)*hppp)-apprr+ho;
+ x7r-x1=hround 0.6u+(0.5thin*(sqrt2-1));
+ x2=x5=x8=0.5[x3l,x7r];
+ x3r-x3l=x7r-x7l=hround 0.5[thin,ess];
+ ortho_penpos5(ess,(-1,-slope));
+ forsuffixes $=r,l:
+ ellipse_set(2,3.$,4.$,5.$); ellipse_set(8,7.$,6.$,5.$);
+ endfor
+ z1'-z1=(z2-z1)xscaled 1/3; z9-z9'=(z9-z8)xscaled 0.3;
+ draw z1{z1'-z1}...z2 left_to_down z3l...z4l
+ ---z6l...z7l down_to_left z8;
+ draw z2 left_to_down z3r...z4r
+ ---z6r...z7r down_to_left z8...{z9-z9'}z9;
+ square_end1(z1-z1'); square_end9(z9-z9');
+ labels(1,1',2,8,9,9'); penlabels(3,4,5,6,7);
+% the "t" part
+ rt x10=rt x11=w-apprr; x12=0.5[x11,x13];
+ lft x13=lft x14=w-t_w+apprl; rt x16=floor x10;
+ top y15=top y16=x_height; bot y12=-oo;
+ top y14=h; y11=y13=0.3[y12,y16];
+ top y10=max(vround 0.42x_height,top y11);
+ tmp_path:=z10..z11 down_to_left z12 left_to_up z13..z14;
+% the ligature part
+ top y17=top y20=h; z17=whatever[z1,z1'];
+ z19=0.5[z17,0.5[z1,z14]];
+ z18=0.25[z1,z17]; z20=0.25[z14,z17];
+ draw tmp_path;
+ draw z1---z18...z19{z14-z1}...z20---z14;
+ hbbowl(z12,z13,z14,hthick) tmp_path;
+ x15=rt x.bowl.mid;
+ pickup square.nib; draw z14..z.bowl.bot;
+ draw z15..z16; square_end10(up);
+ labels(10,11,12,13,14,15,16,17,18,19,20);
+endchar;
+
+
diff --git a/fonts/mbboard/source/mbbromlo.mf b/fonts/mbboard/source/mbbromlo.mf
new file mode 100644
index 0000000000..eed0081e23
--- /dev/null
+++ b/fonts/mbboard/source/mbbromlo.mf
@@ -0,0 +1,443 @@
+% blackboard typefaces by Anthony Phan.
+% file: mbbromlo.mf (Roman lowercase)
+% last modification: 25.10.2001.
+
+% It should be noticed that most of the work is contained
+% in the last macros definitions of `mbbbase.mf'. This can
+% be legitimated by the fact that lowercase letters must be quite
+% homogeneous. Also, variants should be easily made by
+% changing few parameters (just for `thorn': from `p'
+% whose height is `x_height' to 'thorn whose height is
+% èasc_height') or by adding new features (accents, bars...).
+
+def horizontal_rules_list=
+ -body_depth,-desc_depth,0.5x_height,x_height,cap_height,
+ asc_height,body_height
+enddef;
+
+use_rule1;
+
+iff variant_a:
+beginchar("a",8u#+2appr#,x_height#,0); "The letter a";
+ italcorr 0.75x_height#*slant-.5u#;
+ pickup circle.nib;
+ lft x1=apprl+hround 0.2u;
+ rt x3=w-apprr; x3=x4;
+ top y2=h+uo; bot y4=0; y3=0.3[y2+oo-uo,y4];
+ bot y1=vround max(0.72h,y3);
+ tmp_path:=z4..z3 & elliptic_arc(3,2,1);
+ hbbowl(z2,z3,z4,hthick) tmp_path;
+ x11=x7=x.bowl.mid; lft x9=apprl-ho; x8=0.5[x9,0.5[x.bowl.mid,x4]];
+ if ab_down_factor>0: bot y8=-oo; y7=ab_down_factor[y4,bot h];
+ else: y8=y7=y4; fi
+ top y11=min(vround 0.7h,top y3); slope:=(y11-y4)/16u;
+ ellipse_set(8,9,10,11);
+ tmpp_path:=z7 if ab_down_factor>0: down_to_left else: .. fi
+ z8 left_to_up z9...z10---z11;
+ if straight_bowl: bbbowl(z11,z9,z8,hThick) tmpp_path;
+ else: begingroup interim superness:=superbowl;
+ draw 0.5[z10,z11]{z10-z11}...(x9+hThick,y9) down_to_right z8;
+ endgroup; fi
+ draw tmp_path; draw tmpp_path;
+ pickup square.nib; draw z4..z.bowl.bot;
+ square_end1(z1-z1'); labels(range 1 thru 11);
+ math_fit(0,0);
+endchar;
+
+iff not variant_a:
+beginchar("a",8u#+2appr#,x_height#,0); "The letter a";
+ italcorr x_height#*slant-.5u#;
+ complete_left_lower(ab_down_factor,ab_up_factor);
+ math_fit(0,0);
+endchar;
+
+beginchar("b",8u#+2appr#,asc_height#,0); "The letter b";
+ italcorr 0.6x_height#*slant+ho#-.5u#;
+ complete_right_lower(ab_down_factor,ab_up_factor);
+ math_fit(0,0);
+endchar;
+
+beginchar("c",7u#+2appr#,x_height#,0);
+ "The letter c";
+ italcorr x_height#*slant-.5u#;
+ pickup circle.nib;
+ x1=x5=w-apprr; lft x3=apprl-ho;
+ top y2=h+uo; bot y4=-oo; y3=0.5[y4,y2];
+ y1=0.707[y3,y2]; y5=0.707[y3,y4];
+ tmp_path:=reverse elliptic_arc(3,2,1)&elliptic_arc(3,4,5);
+ bbbowl(z2,z3,z4,hThick) tmp_path; draw tmp_path;
+ square_end1(z1-z1');
+ square_end5(z5-z5');
+ labels(1,1',2,3,4,5,5');
+ math_fit(0,0);
+endchar;
+
+beginchar("d",8u#+2appr#,asc_height#,0); "The letter d";
+ italcorr asc_height#*slant-.5u#;
+ complete_left_lower(ab_down_factor,ab_up_factor);
+ math_fit(0,0);
+endchar;
+
+beginchar("e",8u#+2appr#,x_height#,0); "The letter e";
+ italcorr 0.6x_height#*slant+ho#-.5u#;
+ numeric t; pickup circle.nib;
+ rt x1=w-apprr+ho; lft x3=apprl-ho; x2=x4=0.5[x1,x3];
+ top y2=h+uo; bot y4=-oo; y1=y3=good.y(0.5[y2,y4]);
+ tmp_path:=superellipse(z1,z2,z3,z4,superness);
+ t=xpart(tmp_path intersectiontimes
+ (bot(w/2,0.25[y4,y2])..bot(w,0.25[y4,y2])));
+ draw subpath (0,t) of tmp_path;
+ z5=point t of tmp_path;
+ bbbowl(z2,z3,z4,hThick) tmp_path;
+ z6=(x.bowl.mid,y1);
+ hbbowl(z2,z1,z1,hThick) tmp_path;
+ x6r=x6l=x6; x1r=x1; x1m=x1l=rt x1;
+ y6r=y1r=top y1; y1m=y1; y1l=y6l=bot y1;
+ fill z1l--z1m--z1r--z6r--z6l--cycle;
+ square_end5(direction t of tmp_path);
+ labels(1,1r,1l,1m,2,3,4,5,6,6l,6r);
+ math_fit(0,0);
+endchar;
+
+beginchar("f",hthick#+thin#+u#+2appr#,asc_height#,
+ if variant_f: desc_depth# else: 0 fi);
+ "The letter f";
+ italcorr asc_height#*slant+1.5u#;
+ pickup circle.nib; lft x1=apprl;
+ x2-x1=hthick; x3=x2; x4-x3=hround 2u;
+ top y3=top y4=x_height; draw z3..z4;
+ complete_f_stroke(1,2,hround 3u,true);
+ square_end4(right);
+ labels(3,4);
+ math_fit(0,0);
+endchar;
+
+beginchar("g",8u#+2appr#,x_height#,desc_depth#); "The letter g";
+ italcorr x_height#*slant-.5u#;
+ if variant_g:
+ numeric t;
+ pickup circle.nib;
+ bbcircle1(apprl,w-apprr,x_height+uo,hround 0.25h); draw last_path;
+ bbbowl(z1b,z1a,z1d,hthick) last_path;
+ bbbowl(z1b,z1c,z1d,hthick) last_path;
+ rt x3=w-apprr+hround 0.5u; top y3=h;
+ y2=0.5[y1b,y3];
+ t=xpart(last_path intersectiontimes ((x1b,y2)..(x1a,y2)));
+ z2=point t of last_path; slope:=-d/20u;
+ lft x4l=lft x10+ho=apprl; rt x8r=w-apprr+ho;
+ x4r-x4l=x8r-x8l=hround 0.5[thin,thick]; x6=x9=x1b;
+ y6=0; bot y9=-d-oo; ortho_penpos6(thick,(-1,-slope));
+ forsuffixes $=l,r:
+ ellipse_set(bowl.bot,4$,5$,6$); ellipse_set(9,8$,7$,6$);
+ draw z.bowl.bot left_to_down z4$...z5$---z7$...z8$ down_to_left z9;
+ endfor;
+ y10=0.6[y9,y5l];
+ draw z2{-direction t of last_path}...z3{right};
+ draw z9 left_to_up z10 up_to_right z5l;
+ square_end3(right);
+ labels(2,3,9,10); penlabels(4,5,6,7,8);
+ else:
+ g_bar:=true; complete_left_lower(ab_down_factor,ab_up_factor);
+ fi
+ math_fit(0,0);
+endchar;
+
+beginchar("h",8u#+2appr#,asc_height#,0); "The letter h";
+ italcorr 0.75x_height#*slant-.5u#;
+ complete_n;
+ math_fit(0,0);
+endchar;
+
+beginchar("i",hthick#+thin#+2appr#,
+ min(asc_height#,10/7x_height#+0.5dot_size#),0);
+ "The letter i";
+ if square_dots: italcorr charht*slant-.5u#;
+ else: italcorr (charht-0.4dot_size#)*slant-.5u#; fi
+ center_bar(1,2); x1=x3=x5; x2=x4=x5';
+ bot y1=bot y2=0; top y3=top y4=x_height;
+ top y5'=h; bot y5=h-dot_size; dot(5,5');
+ pickup square.nib; draw z1--z2--z4--z3--cycle;
+ labels(1,2,3,4);
+ math_fit(0,0);
+endchar;
+
+beginchar("j",hthick#+thin#+2appr#,
+ min(asc_height#,10/7x_height#+0.5dot_size#),desc_depth#);
+ "The letter j";
+ if square_dots: italcorr charht*slant-.5u#;
+ else: italcorr (charht-0.4dot_size#)*slant-.5u#; fi
+ pickup circle.nib;
+ y1=0; top y2=top y3=x_height;
+ rt x1=rt x2=w-apprr; x2-x3=hthick;
+ x5'=x2; x3=x5; top y5'=h; bot y5=h-dot_size;
+ draw z2..j_curve1(4,x3,true); draw z3..z4;
+ dot(5,5'); pickup square.nib; draw z2..z3;
+ labels(1,2,3,4);
+ math_fit(0,0);
+endchar;
+
+beginchar("k",9u#+2appr#,asc_height#,0); "The letter k";
+ italcorr x_height#*slant-.5u#;
+ pickup circle.nib;
+ lft x1=lft x3=apprl; x2-x1=hthick; x4=x5=x2;
+ bot y1=0; y2=y1; top y3=h; y4=y3;
+ x6r=w-apprr; y6r=x_height; y5=0.4*x_height;
+ adjust_slanted_bar(5,6r,5a,6)(0.5thin,-1);
+ z6-z6l=z6r-z6; ortho_penpos5(thin,z6-z5);
+ z7=(w-apprr,0); top z8b=(1[x3,x4],x_height);
+ adjust_slanted_bar(8b,7,7b,8)(thick,1);
+ z9=whatever[z5,z6]; z9=whatever[z7,z7b];
+ z10=whatever[z5,z6]; z10=whatever[z8,z8b];
+ y7a-y7=y8a-y8=thin; z7a=whatever[z7,z7b]; z8a=whatever[z8,z8b];
+ penpos7(diag_width(thin,z7b-z7),0);
+ penpos8(diag_width(thin,z8b-z8),0);
+ ortho_penpos9(thin, z7b-z7); ortho_penpos10(thin, z8b-z8);
+ pickup square.nib; draw z1--z2--z4--z3--cycle;
+ penstroke z5e..z6e; penstroke z7e..z9e; penstroke z8e..z10e;
+ fill z7--z8--z8a--z7a--cycle;
+ labels(1,2,3,4,5a,7a,7b,8a,8b); penlabels(5,6,7,8,9,10);
+ math_fit(0,0);
+endchar;
+
+beginchar("l",hthick#+thin#+2appr#,asc_height#,0); "The letter l";
+ italcorr asc_height#*slant-.5u#;
+ center_bar(1,2); x1=x3; x2=x4;
+ bot y1=bot y2=0; top y3=top y4=h; pickup square.nib;
+ draw z1--z2--z4--z3--cycle; labels(1,2,3,4);
+ math_fit(0,0);
+endchar;
+
+beginchar("m",16u#-hthick#-thin#+2appr#,x_height#,0); "The letter m";
+ italcorr 0.75x_height#*slant-.5u#;
+ if hmn_factor > 0 :
+ center_bar(0,8);
+ bot y1=0; y0=y1=y2=y8=y12; top y3=top y4=h;
+ top y6=top y10=h+oo; y11=0.3[y10,y12];
+ y5=y9=hmn_factor[y4,y2]; y7=max(y9,y11);
+ lft x1=lft x3=apprl; rt x11=rt x12=w-apprr;
+ x7=x8=x9; x2=x4=x5=x1+hthick;
+ x6=0.5[x5,x7]; x10=0.5[x9,x11];
+ tmp_path:=z5 up_to_right z6 right_to_down z7..z8;
+ tmpp_path:=z9 up_to_right z10 right_to_down z11..z12;
+ draw tmp_path; draw tmpp_path;
+ hbbowl(z6,z7,z8,hthick) tmp_path;
+ hbbowl(z10,z11,z12,hthick) tmpp_path;
+ pickup square.nib; draw z1--z2--z4--z3--cycle;
+ draw z0..z8; draw z12..z.bowl.bot;
+ labels(1,2,3,4,5,6,7,8,9,10,11,12);
+ else:
+ center_bar(8,11); x8=x9; x10=x11;
+ bot y1=0; y1=y2=y7=y9=y10; top y3=h;
+ y3=y4=y5=y8=y11; y6=0.7[y7,y5];
+ lft x1=lft x3=apprl; rt x6=rt x7=w-apprr;
+ x5=0.5[x11,x6]; x2-x1=x4-x3=hthick;
+ tmp_path:=z3..z5 right_to_down z6..z7;
+ draw tmp_path;
+ hbbowl(z5,z6,z7,hthick) tmp_path;
+ draw z8..z9; draw z10..z11;
+ pickup square.nib; draw z4--z2--z1--z3; draw z9..z10;
+ draw z7..z.bowl.bot; labels(1,2,3,4,5,6,7,8,9,10,11);
+ fi
+ math_fit(0,0);
+endchar;
+
+beginchar("n",8u#+2appr#,x_height#,0); "The letter n";
+ italcorr 0.75x_height#*slant-.5u#;
+ complete_n;
+ math_fit(0,0);
+endchar;
+
+beginchar("o",8u#+2appr#,x_height#,0); "The letter o";
+ italcorr 0.6x_height#*slant+ho#-.5u#;
+ pickup circle.nib;
+ bbcircle1(apprl-ho,w-apprr+ho,x_height+uo,-oo); draw last_path;
+ bbbowl(z1b,z1a,z1d,hThick) last_path;
+ bbbowl(z1b,z1c,z1d,hThick) last_path;
+ math_fit(0,0);
+endchar;
+
+beginchar("p",8u#+2appr#,x_height#,desc_depth#); "The letter p";
+ italcorr 0.6x_height#*slant+ho#-.5u#;
+ complete_right_lower(ab_down_factor,ab_up_factor);
+ math_fit(0,0);
+endchar;
+
+beginchar("q",8u#+2appr#,x_height#,desc_depth#); "The letter q";
+ italcorr x_height#*slant-.5u#;
+ complete_left_lower(ab_down_factor,ab_up_factor);
+ math_fit(0,0);
+endchar;
+
+beginchar("r",5.5u#+2appr#,x_height#,0); "The letter r";
+ italcorr x_height#*slant+.5u#;
+ pickup circle.nib;
+ lft x1=lft x3=apprl; x5=x2=x4=x1+hthick;
+ bot y1=bot y2=0; top y3=h; y3=y4=y6=y7;
+ rt x7=hround(w-apprr+u);
+ x6=0.15[x7,x2]; y5=0.3[y2,y4];
+ draw z5 up_to_right z6..z7;
+ pickup square.nib; draw z1--z2--z4--z3--cycle;
+ square_end7(right);
+ labels(1,2,3,4,5,6,7);
+ math_fit(0,0);
+endchar;
+
+beginchar("s",7u#+2appr#,x_height#,0);
+ "The letter s";
+ italcorr x_height#*slant+ho#-1.1u#;
+ pickup circle.nib;
+ slope:=-h/24u;
+ y5=0.52[y8,y2]; top y2=h+uo; bot y8=-oo;
+ y2-y1=vround 0.12h; y9-y8=vround 0.175h;
+ lft x3l=lft x9-(0.5thin*(sqrt2-1))=apprl-ho;
+ rt x7r=w-apprr+ho; x7r-x1=hround 0.6u+(0.5thin*(sqrt2-1));
+ x2=x5=x8=0.5[apprl,w-apprr];
+ x3r-x3l=x7r-x7l=hround 0.5[thin,ess];
+ ortho_penpos5(ess,(-1,-slope));
+ forsuffixes $=r,l:
+ ellipse_set(2,3.$,4.$,5.$); ellipse_set(8,7.$,6.$,5.$);
+ endfor
+ z1'-z1=(z2-z1)xscaled 1/3; z9-z9'=(z9-z8)xscaled 0.3;
+ draw z1{z1'-z1}...z2 left_to_down z3l...z4l
+ ---z6l...z7l down_to_left z8;
+ draw z2 left_to_down z3r...z4r
+ ---z6r...z7r down_to_left z8...{z9-z9'}z9;
+ square_end1(z1-z1'); square_end9(z9-z9');
+ labels(1,1',2,8,9,9'); penlabels(3,4,5,6,7);
+ math_fit(0,0);
+endchar;
+
+beginchar("t",6u#+2appr#,min(asc_height#,10/7x_height#),0);
+ "The letter t";
+ italcorr x_height#*slant-0.5thin#-.5u#;
+ pickup circle.nib;
+ % the "t" part
+ rt x1=rt x2=w-apprr; x3=0.5[x2,x4];
+ lft x4=lft x5=apprl; rt x7=floor x1;
+ top y6=top y7=x_height; bot y3=-oo;
+ top y5=h; y2=y4=0.3[y3,y6];
+ top y1=max(vround 0.42x_height,top y2);
+ tmp_path:=z1..z2 down_to_left z3 left_to_up z4..z5;
+ draw tmp_path;
+ hbbowl(z3,z4,z5,hthick) tmp_path;
+ x6=rt x.bowl.mid;
+ pickup square.nib;
+ draw z6..z7; draw z5..z.bowl.bot;
+ square_end1(up);
+ labels(1,2,3,4,5,6,7);
+ math_fit(0,0);
+endchar;
+
+beginchar("u",8u#+2appr#,x_height#,0); "The letter u";
+ italcorr x_height#*slant-.5u#;
+ complete_u(uy_factor);
+ math_fit(0,0);
+endchar;
+
+beginchar("v",7.6u#+2appr#,x_height#,0); "The letter v";
+ italcorr x_height#*slant;
+ complete_AV(-1,apprl-0.5u,w-apprr+0.5u);
+ math_fit(0,0);
+endchar;
+
+beginchar("w",13u#+2appr#,x_height#,0); "The letter w";
+ italcorr x_height#*slant-0.5u#;% not perfect...
+ pickup circle.nib;
+ x1=apprl; x12=w-apprr; x6=x7=0.5[x1,x12];
+ x5-x2=hthick; x2-x1=x7-x5=x8-x7=x12-x11;
+ y1=y3=y6=y7=y9=y12=h; y2=y5=y8=y11=bot y4a=0;
+ a:=diag_width(1,z1-z2);
+ penpos1(thin*a,0); penpos2(thin*a,0); penpos3(thin*a,0);
+ penpos8(thin*a,0); penpos9(thin*a,0);
+ x3-x1=x9-x7=thick*a;
+ z4a-z3=z10a-z9=whatever*(z2-z1);
+ z4=whatever[z3,z4a]; z10=whatever[z9,z10a];
+ if x4a>x5: z4=whatever[z5,z6]; z10=whatever[z11,z12];
+ else: bot y4=bot y10=0; fi
+ ortho_penpos4(thin,z3-z4a); ortho_penpos10(thin,z9-z10a);
+ a:=diag_width(thin,z6-z5);
+ penpos5(a,0); penpos11(a,0); penpos12(a,0);
+ z6-z6l=z5-z5l; z7r-z7=z8r-z8;
+ z6r=whatever[z7,z8]; z6r-z5r=whatever*(z6-z5);
+ z7l=whatever[z5,z6]; z7l-z8l=whatever*(z7-z8);
+ y1-y1a=thin; z1a=whatever[z1,z2];
+ z1-z1a=z2a-z2=z3-z3a=z7-z7a=z8a-z8=z9-z9a;
+ y5a-y5=thin; z5a=whatever[z5,z6];
+ z5a-z5=z11a-z11;
+ penstroke z1e..z2e; penstroke z3e..z4e;
+ penstroke z9e..z10e; penstroke z11e..z12e;
+ fill z5r--z5l--z6l--z6--z6r--cycle;
+ fill z8r--z8l--z7l--z7--z7r--cycle;
+ fill z1--z3--z3a--z1a--cycle; fill z2--z5--z5a--z2a--cycle;
+ fill z7--z9--z9a--z7a--cycle; fill z8--z11--z11a--z8a--cycle;
+ penlabels(1,2,3,4,5,6,7,8,9,10,11,12);
+ labels(1a,2a,3a,4a,5a,8a,9a,10a,11a);
+ math_fit(0,0);
+endchar;
+
+beginchar("x",8.8u#+2appr#,x_height#,0); "The letter x";
+ italcorr x_height#*slant-0.5u#;
+ complete_X(0.3u);
+ math_fit(0,0);
+endchar;
+
+beginchar("y",8u#+2appr#,x_height#,desc_depth#); "The letter y";
+ italcorr x_height#*slant-.5u#;
+ if variant_y: y1=y3=y4=h; y5=0; y2=-d;
+ x3=apprl; x1=w-apprr; x5=0.5[x3,x1];
+ z2=whatever[z1,z5];
+ a:=diag_width(1,z3-z5); x4-x3=a*thick;
+ penpos3(thin*a,0); penpos4(thin*a,0);
+ penpos1(diag_width(thin,z1-z2),0);
+ penpos2(diag_width(thin,z1-z2),0);
+ z6=whatever[z1,z2]; z6-z4=whatever*(z5-z3);
+ y3-y3a=thin; z3a-z3=z4a-z4=whatever*(z5-z3);
+ z5l=whatever[z1,z2]; z5l-z3l=whatever*(z5-z3);
+ z6r-z6=z6-z6l=z5r-z5=z5-z5l;
+ penstroke z1e..z2e; penstroke z3e..z5e; penstroke z4e..z6e;
+ fill z3--z4--z4a--z3a--cycle;
+ penlabels(1,2,3,4,5,6); labels(3a,4a);
+ else: g_bar:=true; complete_u(uy_factor);
+ fi
+ math_fit(0,0);
+endchar;
+
+beginchar("z",7.6u#+2appr#,x_height#,0); "The letter z";
+ italcorr x_height#*slant-.5u#;
+ pickup circle.nib;
+ z1l=(apprl-hround 0.15u,0); z2l=(w-apprr+hround 0.1u,0);
+ z3r=(apprl,h); z4r=(w-apprr,h);
+ penpos1(thin,90); penpos2(thin,90);
+ penpos3(thin,90); penpos4(thin,90);
+ z5l=z1r; z8r=z4l;
+ adjust_slanted_bar(5l,8r,6r,7l)(thick+thin,-1);
+ a:=diag_width(thin,z8r-z6r);
+ penpos5(a,0); penpos6(a,0); penpos7(a,0); penpos8(a,0);
+ penstroke z1e..z2e; penstroke z3e..z4e;
+ penstroke z5e..z7e; penstroke z6e..z8e;
+ penlabels(1,2,3,4,5,6,7,8);
+ math_fit(0,0);
+endchar;
+
+iff known bbdotless_i:
+beginchar(bbdotless_i,max(hthick#+thin#,4u#)+2appr#,x_height#,0);
+ "The dotless i";
+ italcorr x_height#*slant-.5u#;% to be corrected ? answer: no.
+ pickup circle.nib; center_bar(1,2); x1=x3; x2=x4;
+ bot y1=bot y2=0; top y3=top y4=h; pickup square.nib;
+ draw z1--z2--z4--z3--cycle; labels(1,2,3,4);
+ math_fit(0,0);
+endchar;
+
+iff known bbdotless_j:
+beginchar(bbdotless_j,max(hthick#+thin#,4u#)+2appr#,
+ x_height#,desc_depth#);
+ "The dotless j";
+ italcorr x_height#*slant-.5u#;% to be corrected ? answer: no.
+ pickup circle.nib;
+ center_bar(3,2); x1=x2; y1=0; top y2=top y3=h;
+ draw z2..j_curve1(4,x3,true); draw z3..z4;
+ pickup square.nib; draw z2..z3;
+ labels(1,2,3,4);
+ math_fit(0,0);
+endchar; \ No newline at end of file
diff --git a/fonts/mbboard/source/mbbromup.mf b/fonts/mbboard/source/mbbromup.mf
new file mode 100644
index 0000000000..b982ae6c83
--- /dev/null
+++ b/fonts/mbboard/source/mbbromup.mf
@@ -0,0 +1,465 @@
+% blackboard typefaces by Anthony Phan.
+% file: mbbromup.mf (Roman uppercase)
+% last modification: 25.10.2001.
+
+def horizontal_rules_list=0.4h,0.5h,0.6h,
+ -body_depth,-desc_depth,cap_height,asc_height,body_height
+enddef;
+
+use_rule2;
+
+beginchar("A",11.5u#+2appr#,cap_height#,0);
+ "The letter A";
+% no italic correction
+ complete_AV(1,apprl-0.5u,w-apprr+0.5u);
+ pickup circle.nib;
+ z11=whatever[z1,z2];
+ z12=whatever[z5,z6];
+ bot y11=bot y12=vround 0.25h;
+ draw z11..z12;
+ labels(11,12);
+ math_fit(0,0);
+endchar;
+
+beginchar("B",10.15u#+Appr#+appr#,cap_height#,0);
+ "The letter B";
+ italcorr 0.8cap_height#*slant-0.85u#;
+ pickup circle.nib; bot y4=vround 0.5h;
+ lft x1=lft x9=Apprl; x2=x4=0.56[x1,x3];
+ rt x3=w-apprr-hround 0.35u;
+ x6=x8=0.56[x1,x7]; rt x7=w-apprr; x5=x10=x11=x1+hthick;
+ top y1=top y2=top y11=h; y4=y5=y6; y3=0.5[y2,y4];
+ y7=0.5[y6,y8]; bot y8=bot y9=bot y10=0;
+ x12=max(x7-hThick,x6); x14=min(x12,x3);
+ tmp_path:=z1..z2 right_to_down z3 down_to_left z4..z5
+ &z5..z6 right_to_down z7 down_to_left z8..z9;
+ draw tmp_path; draw z10..z11;
+ bbbowl(z6,z7,z8,hThick) tmp_path;
+ bbbowl(z2,z3,z4,max(0,x3-x.bowl.mid)) tmp_path;
+ pickup square.nib; draw z1..z9;
+ labels(1,2,3,4,5,6,7,8,9,10,11);
+ math_fit(0,0.3cap_height#*slant);
+endchar;
+
+beginchar("C",11u#+2appr#,cap_height#,0);
+ "The letter C";
+ italcorr 0.8cap_height#*slant-0.5u#;
+ pickup circle.nib;
+ top y2=h+o; bot y4=-o; lft x3=apprl;
+ rt x1=w-apprr; x5-x1=hround 0.265u;
+ y1=0.223[y2,y4]; y5=0.223[y4,y2]; y3=0.5[y4,y2];
+ tmp_path:=reverse elliptic_arc(3,2,1)
+ & elliptic_arc(3,4,5);
+ draw tmp_path;
+ bbbowl(z2,z3,z4,hThick) tmp_path;
+ square_end1(z1-z1');
+ square_end5(z5-z5');
+ labels(1,1',2,3,4,5,5');
+ math_fit(-0.4cap_height#*slant,0.3cap_height#*slant);
+endchar;
+
+beginchar("D",11.25u#+Appr#+appr#,cap_height#,0);
+ "The letter D";
+ italcorr 0.6cap_height#*slant-0.5u#;
+ pickup circle.nib;
+ lft x1=lft x5=Apprl; rt x3=w-apprr;
+ x2=0.5[x1,x3]; x4=0.525[x1,x3]; x6=x7=x1+hthick;
+ top y1=top y2=top y7=h; bot y4=bot y5=bot y6=0; y3=h/2;
+ tmp_path:=z1..z2 right_to_down z3 down_to_left z4..z5;
+ draw tmp_path; draw z6..z7;
+ bbbowl(z2,z3,z4,hThick) tmp_path;
+ pickup square.nib; draw z1..z5;
+ labels(1,2,3,4,5,6,7);
+ math_fit(0,0.5cap_height#*slant);
+endchar;
+
+beginchar("E",7.5u#+Appr#+appr#,cap_height#,0);
+ "The letter E";
+ italcorr cap_height#*slant-0.5u#;
+ pickup circle.nib; rt x1=rt x4=w-apprr; lft x2=lft x3=Apprl;
+ x5=x6=x3+hthick; lft x7=x5; rt x8=w-apprr-hround 0.7u;
+ top y1=top y2=top y6=h; bot y3=bot y4=bot y5=0;
+ bot y7=bot y8=vround(0.5h); pickup square.nib;
+ draw z1--z2--z3--z4; draw z5..z6; draw z7..z8;
+ labels(1,2,3,4,5,6,7,8);
+ math_fit(0,max(0.5cap_height#*slant-0.7u#,0));
+endchar;
+
+beginchar("F",7.5u#+Appr#+appr#,cap_height#,0);
+ "The letter F";
+ italcorr cap_height#*slant-0.5u#;
+ pickup circle.nib; rt x1=w-apprr; lft x2=lft x3=Apprl;
+ x4=x5=x3+hthick; lft x6=x4; rt x7=w-apprr-hround 0.7u;
+ top y1=top y2=top y5=h; bot y3=bot y4=0;
+ y6=y7=good.y 0.5h; pickup square.nib;
+ draw z1--z2--z3--z4--z5; draw z6..z7;
+ labels(1,2,3,4,5,6,7);
+ math_fit(0,max(0.5cap_height#*slant-0.7u#,0));
+endchar;
+
+% The openness of the letter G depends on the width.
+
+beginchar("G",11.5u#+0.5thin#+2appr#,cap_height#,0);
+ "The letter G";
+ italcorr 0.8cap_height#*slant-0.5u#;
+ numeric t[];
+ pickup circle.nib;
+ top y2=h+o; bot y4=-o; y1=y3=0.5[y2,y4];
+ rt x1=apprl+13u; lft x3=apprl; x2=x4=0.5[x3,x1];
+ tmp_path:=superellipse(z1,z2,z3,z4,superness);
+ rt x5=w-apprr;
+ t1=xpart(tmp_path intersectiontimes ((x5,y1)..(x5,y2)));
+ t2=xpart(tmp_path intersectiontimes ((x5,y1)..(x5,y4)));
+ z5=point t1 of tmp_path; z6=point t2 of tmp_path;
+ top z7=(x6,vround(h/2)); y8=y9=y7;
+ lft x8=apprl+6u;
+ cutdraw subpath (t1,t2) of tmp_path;
+ draw z6..z7;
+ bbbowl(z2,z3,z4,hThick) tmp_path;
+ hbbowl(z4,z7,z7,hthick) tmp_path;
+ pickup square.nib; draw z7..z8;
+ penlabels(1,2,3,4,5,6,7,8);
+ math_fit(-0.4cap_height#*slant,0.5cap_height#*slant);
+endchar;
+
+beginchar("H",11u#+2Appr#,cap_height#,0);
+ "The letter H";
+ italcorr cap_height#*slant-u#;
+ pickup circle.nib;
+ lft x1=lft x3=Apprl; rt x5=rt x7=w-Apprr;
+ x7-x8=x5-x6=x4-x3=x2-x1=hthick;
+ bot y1=0; top y3=h; y1=y2=y5=y6; y3=y4=y7=y8;
+ bot y9=bot y10=vround 0.5h; lft x9=x2; rt x10=x6;
+ draw z9..z10; pickup square.nib; draw z1--z2--z4--z3--cycle;
+ draw z5--z6--z8--z7--cycle; labels(1,2,3,4,5,6,7,8,9,10);
+ math_fit(0,0.5ic#);
+endchar;
+
+beginchar("I",hthick#+thin#+2Appr#,cap_height#,0);
+ "The letter I";
+ italcorr cap_height#*slant-u#;
+ center_bar(1,2); x1=x3; x2=x4;
+ bot y1=bot y2=0; top y3=top y4=h; pickup square.nib;
+ draw z1--z2--z4--z3--cycle; labels(1,2,3,4);
+ math_fit(0,0.5ic#);
+endchar;
+
+beginchar("J",7.25u#+Appr#+appr#,cap_height#,0);
+ "The letter J";
+ italcorr cap_height#*slant-u#;
+ pickup circle.nib;
+ lft x1=apprl; rt x3=rt x4=w-Apprr; x2=0.5[x1,x3];
+ top y1=vround(0.3h); bot y2=-o; y3=y1; top y4=h;
+ tmp_path:=z1 down_to_right z2 right_to_up z3..z4;
+ draw tmp_path;
+ hbbowl(z2,z3,z4,hThick) tmp_path;
+ pickup square.nib; draw z4..z.bowl.bot;
+ square_end1(up);
+ labels(1,2,3,4);
+ math_fit(0,0.5ic#);
+endchar;
+
+beginchar("K",11.5u#+Appr#+appr#,cap_height#,0);
+ "The letter K";
+ italcorr cap_height#*slant-0.5u#;
+ pickup circle.nib;
+ lft x1=lft x3=Apprl; x2-x1=hthick; x4=x5=x2;
+ bot y1=0; y2=y1; top y3=h; y4=y3;
+ x6r=w-apprr; y6r=h; y5=0.4h;
+ adjust_slanted_bar(5,6r,5a,6)(0.5thin,-1);
+ z6-z6l=z6r-z6; ortho_penpos5(thin,z6-z5);
+ z7=(w-apprr,0); top z8b=(0.78[x3,x4],h);
+ adjust_slanted_bar(8b,7,7b,8)(thick,1);
+ z9=whatever[z5,z6]; z9=whatever[z7,z7b];
+ z10=whatever[z5,z6]; z10=whatever[z8,z8b];
+ y7a-y7=y8a-y8=thin; z7a=whatever[z7,z7b]; z8a=whatever[z8,z8b];
+ penpos7(diag_width(thin,z7b-z7),0);
+ penpos8(diag_width(thin,z8b-z8),0);
+ ortho_penpos9(thin, z7b-z7); ortho_penpos10(thin, z8b-z8);
+ pickup square.nib; draw z1--z2--z4--z3--cycle;
+ penstroke z5e..z6e; penstroke z7e..z9e; penstroke z8e..z10e;
+ fill z7--z8--z8a--z7a--cycle;
+ labels(1,2,3,4,5a,7a,7b,8a,8b); penlabels(5,6,7,8,9,10);
+ math_fit(0,0);
+endchar;
+
+beginchar("L",7.5u#+Appr#+appr#,cap_height#,0); "The letter L";
+ % no italic correction
+ pickup circle.nib; rt x1=w-apprr; lft x2=lft x3=Apprl;
+ x4=x5=x3+hthick; bot y1=bot y2=bot y5=0; top y3=top y4=h;
+ pickup square.nib; draw z1--z2--z3--z4--z5;
+ labels(1,2,3,4,5);
+ math_fit(0,0);
+endchar;
+
+beginchar("M",14u#+2Appr#,cap_height#,0);
+ "The letter M";
+ italcorr cap_height#*slant-u#;
+ pickup circle.nib;
+ bot y1=0; y1=y6=y7=y11=y12; top y2=h; y2=y3=y9=y10;
+ lft x1=lft x2=Apprl; rt x10=rt x11=w-Apprr;
+ x10-x9=x11-x12=x7-x6=x3-x2=hthick; x6-x1=x12-x7;
+ y6r=y7r=0; y2l=y3l=y8l=h;
+ y2l-y2r=y3l-y3r=y6l-y6r=y7l-y7r=thin;
+ x2l=x2r=x2; x8l=lft x9;
+ adjust_slanted_bar(6,3,4',5')(thick,-1);
+ adjust_slanted_bar(7,8l,7',8')(0.5thin,1);
+ if x4'>x7:
+ z4=whatever[z3,z4']; z4=whatever[z7,z8'];
+ z5=whatever[z1,z2]; z5=whatever[z6,z5'];
+ else: z4=z4'; z5=z5'; fi
+ ortho_penpos4(thin,z4'-z3);
+ ortho_penpos5(thin,z6-z5');
+ ortho_penpos8(thin,z8'-z7);
+ forsuffixes $=r,l:
+ z3$-z4$=whatever*(z3-z4);
+ z7$-z8$=whatever*(z7-z8);
+ z6$-z5$=whatever*(z6-z5);
+ endfor;
+ penstroke z2e--z3e--z4e; penstroke z5e--z6e--z7e--z8e;
+ pickup square.nib; draw z1..z2; draw z9--z10--z11--z12--cycle;
+ penlabels(2,3,4,5,6,7,8); labels(1,4',5',7'8',9,10,11,12);
+ math_fit(0,0.5ic#);
+endchar;
+
+beginchar("N",10.7u#+2Appr#,cap_height#,0);
+ "The letter N";
+ italcorr cap_height#*slant-u#;
+ pickup circle.nib;
+ bot y1=0; y1=y6=y7; top y2=h; y2=y3=y5;
+ lft x1=lft x2=Apprl; rt x5=rt x6=w-Apprr;
+ x3-x2=x6-x7=hthick; penpos2(thin,-90); penpos6(thin,90);
+ y3l=h; y7l=0; y3l-y3r=y7r-y7l=thin;
+ adjust_slanted_bar(3,7,8a,4a)(thick,-1);
+ if x8a>x2: z8=z8a; else: x8=x2; z8=whatever[z7,z8a]; fi
+ if x4a<x6: z4=z4a; else: x4=x6; z4=whatever[z3,z4a]; fi
+ ortho_penpos4(thin,z4-z3); ortho_penpos8(thin,z8-z7);
+ z8r-z7r=whatever*(z8-z7); z8l-z7l=whatever*(z8-z7);
+ z4r-z3r=whatever*(z4-z3); z4l-z3l=whatever*(z4-z3);
+ penstroke z2e--z3e--z4e; penstroke z6e--z7e--z8e;
+ pickup square.nib; draw z1..z2; draw z5..z6;
+ labels(1,5,4a,8a); penlabels(2,3,4,6,7,8);
+ math_fit(0,0.5ic#);
+endchar;
+
+beginchar("O",13u#+2appr#,cap_height#,0);
+ "the letter O";
+ italcorr 0.6cap_height#*slant-0.5u#;
+ pickup circle.nib;
+ bbcircle1(apprl,w-apprr,h+o,-o);
+ draw last_path;
+ bbbowl(z1b,z1a,z1d,hThick) last_path;
+ bbbowl(z1b,z1c,z1d,hThick) last_path;
+ math_fit(-0.4cap_height#*slant,ic#);
+endchar;
+
+beginchar("P",10.15u#+Appr#+appr#,cap_height#,0);
+ "The letter P";
+ italcorr 0.75cap_height#*slant-0.5u#;
+ pickup circle.nib;
+ lft x1=lft x3=Apprl; rt x6=w-apprr; x2-x1=x4-x3=hthick;
+ x5=0.50[x1,x6]; x7=0.50[x1,x6]; x8=x2;
+ bot y1=bot y2=0; top y3=top y4=top y5=h;
+ bot y7=bot y8=vround 0.4h; y6=0.5[y5,y7];
+ tmp_path:=z3..z5 right_to_down z6 down_to_left z7..z8;
+ draw tmp_path;
+ bbbowl(z5,z6,z7,hThick) tmp_path;
+ pickup square.nib; draw z4--z2--z1--z3;
+ labels(1,2,3,4,5,6,7,8);
+ math_fit(0,0.4cap_height#*slant-u#);
+endchar;
+
+beginchar("Q",13u#+2appr#,cap_height#,0);
+ "the letter Q";
+ italcorr 0.6cap_height#*slant-0.5u#;
+ pickup circle.nib;
+ bbcircle1(apprl,w-apprr,h+o,-o);
+ draw last_path;
+ bbbowl(z1b,z1a,z1d,hThick) last_path;
+ bbbowl(z1b,z1c,z1d,hThick) last_path;
+ a:=75; x1e=x1c+hThick;
+ x2=0.60[x1d,x1e];
+ z2=last_path intersectionpoint ((x2,y1d)..(x2,y1a));
+ x3=0.00[x1d,x1e]; y3=good.y 0.18[y1d,y1b];
+ y5l=y6l=-o; rt x6=w-apprr-hround 0.5u;
+ x6-x5=0.5thin/sind(angle(dir a slanted slant));
+ penpos6(whatever,a); y6r=y5r;
+ ortho_penpos5(thin,right);
+ z4=0.5[z3,z5];
+ penstroke z5e..z6e;
+ draw z2{(z3-z2) xscaled 1/16}...z3{right}...
+ z4{(z4-z3) xscaled 1/2}...z5{right};
+ labels(2,3,4); penlabels(5,6);
+ math_fit(-0.4cap_height#*slant,ic#);
+endchar;
+
+beginchar("R",10.15u#+Appr#+appr#,cap_height#,0);
+ "The letter R";
+ italcorr 0.75cap_height#*slant-0.5u#;
+ pickup circle.nib;
+ lft x1=lft x3=Apprl; rt x6=w-apprr; x2-x1=x4-x3=hthick;
+ x9=x6-hThick; x5=0.55[x1,x6]; x7=0.50[x1,x6]; x8=x2;
+ bot y1=bot y2=0; top y3=top y4=top y5=h;
+ bot y7=bot y8=vround 0.4h; y6=0.5[y5,y7];
+ tmp_path:=z3..z5 flat_right_to_down z6 down_to_left z7..z8;
+ draw tmp_path;
+ bbbowl(z5,z6,z7,hThick) tmp_path;
+ pickup square.nib;
+ draw z4--z2--z1--z3;
+ z9=z.bowl.bot;
+ z0'=(w-apprr+0.375u,0);
+ adjust_slanted_bar(9,0',0'',10)(0.5thin,1);
+ a:=diag_width(1,z9-z10);
+ z11=z10-(thick*a,0);
+ y0=y8; z0-z11=whatever*(z9-z10);
+ if x0>x2: z12=tmp_path intersectionpoint (z11..(z11+z9-z10));
+ else: x12=x2; z12-z11=whatever*(z9-z10); fi
+ y10a=y11a=thin; z10a=whatever[z10,z9]; z11a=whatever[z11,z12];
+ penpos10(thin*a,0); penpos11(thin*a,0);
+ ortho_penpos9(thin,z9-z10); ortho_penpos12(thin,z12-z11);
+ penstroke z9e..z10e; penstroke z11e..z12e;
+ fill z11--z10--z10a--z11a--cycle;
+ labels(1,2,3,4,5,6,7,8,9,10,0,0',0'',10a,11a);
+ penlabels(9,10,11,12);
+ math_fit(0,0);
+endchar;
+
+beginchar("S",10.7u#+2appr#,cap_height#,0);
+ "The letter S";
+ italcorr 0.8cap_height#*slant-1.1u#;
+ pickup circle.nib;
+ slope:=-h/73u; y5=0.52[y8,y2]; top y2=h+o; bot y8=-o;
+ y2-y1=vround 0.125h; y9-y8=vround 0.175h;
+ lft x3l=lft x9+0.05u=apprl;
+ rt x7r=w-apprr; x7r-x1=0.95u;
+ x5=x8=0.5[x3l,x7r]; x2=0.5[x5,0.5[x1,x3l]];
+ x3r-x3l=x7r-x7l=hround 0.5[thin,cap_ess];
+ ortho_penpos5(cap_ess,(-1,-slope));
+ forsuffixes $=r,l:
+ ellipse_set(2,3.$,4.$,5.$); ellipse_set(8,7.$,6.$,5.$);
+ endfor
+ z1'-z1=(z2-z1)xscaled 1/3; z9-z9'=(z9-z8)xscaled 1/4;
+ draw z1{z1'-z1}...z2 left_to_down z3l...z4l
+ ---z6l...z7l down_to_left z8;
+ draw z2 left_to_down z3r...z4r
+ ---z6r...z7r down_to_left z8...{z9-z9'}z9;
+ square_end1(z1-z1'); square_end9(z9-z9');
+ labels(1,1',2,8,9,9'); penlabels(3,4,5,6,7);
+ math_fit(-0.2cap_height#*slant,0.3cap_height#*slant);
+endchar;
+
+beginchar("T",10.2u#+2appr#,cap_height#,0); "The letter T";
+ italcorr cap_height#*slant;
+ center_bar(1,2); bot y1=bot y2=0; top y5=top y6=h;
+ lft x5=apprl-hround 0.5u; rt x6=w-apprr+hround 0.5u;
+ z3=(x1,y5); z4=(x2,y5); pickup square.nib;
+ draw z5..z6; draw z3--z1--z2--z4; labels(1,2,3,4,5,6);
+ math_fit(-0.5cap_height#*slant,
+ cap_height#*slant-2.5u#);
+endchar;
+
+beginchar("U",11u#+2Appr#,cap_height#,0);
+ "The letter U";
+ italcorr cap_height#*slant-u#;
+ pickup circle.nib;
+ rt x1=rt x2=w-Apprr; lft x4=lft x5=Apprl; x3=0.5[x2,x4];
+ top y1=top y5=h; bot y3=-o; y2=y4=1/3[y3,y1];
+ tmp_path:=z1..z2 down_to_left z3 left_to_up z4..z5;
+ draw tmp_path;
+ hbbowl(z3,z4,z5,hthick) tmp_path;
+ pickup square.nib; draw z5..z.bowl.bot;
+ square_end1(up);
+ labels(1,2,3,4,5);
+ math_fit(-0.4cap_height#*slant,0.5ic#);
+endchar;
+
+beginchar("V",11.5u#+2appr#,cap_height#,0);
+ "The letter V";
+ italcorr cap_height#*slant;
+ complete_AV(-1,apprl-0.5u,w-apprr+0.5u);
+ math_fit(-0.5cap_height#*slant,cap_height#*slant-2u#);
+endchar;
+
+beginchar("W",16u#+2appr#,cap_height#,0);
+ "The letter W";
+ italcorr cap_height#*slant;
+ pickup circle.nib;
+ x1=apprl; x12=w-apprr; x6=x7=0.5[x1,x12];
+ x5-x2=hthick; x2-x1=x7-x5=x8-x7=x12-x11;
+ y1=y3=y6=y7=y9=y12=h; y2=y5=y8=y11=bot y4a=0;
+ a:=diag_width(1,z1-z2);
+ penpos1(thin*a,0); penpos2(thin*a,0); penpos3(thin*a,0);
+ penpos8(thin*a,0); penpos9(thin*a,0);
+ x3-x1=x9-x7=thick*a;
+ z4a-z3=z10a-z9=whatever*(z2-z1);
+ z4=whatever[z3,z4a]; z10=whatever[z9,z10a];
+ if x4a>x5: z4=whatever[z5,z6]; z10=whatever[z11,z12];
+ else: bot y4=bot y10=0; fi
+ ortho_penpos4(thin,z3-z4a); ortho_penpos10(thin,z9-z10a);
+ a:=diag_width(thin,z6-z5);
+ penpos5(a,0); penpos11(a,0); penpos12(a,0);
+ z6-z6l=z5-z5l; z7r-z7=z8r-z8;
+ z6r=whatever[z7,z8]; z6r-z5r=whatever*(z6-z5);
+ z7l=whatever[z5,z6]; z7l-z8l=whatever*(z7-z8);
+ y1-y1a=thin; z1a=whatever[z1,z2];
+ z1-z1a=z2a-z2=z3-z3a=z7-z7a=z8a-z8=z9-z9a;
+ y5a-y5=thin; z5a=whatever[z5,z6];
+ z5a-z5=z11a-z11;
+ penstroke z1e..z2e; penstroke z3e..z4e;
+ penstroke z9e..z10e; penstroke z11e..z12e;
+ fill z5r--z5l--z6l--z6--z6r--cycle;
+ fill z8r--z8l--z7l--z7--z7r--cycle;
+ fill z1--z3--z3a--z1a--cycle; fill z2--z5--z5a--z2a--cycle;
+ fill z7--z9--z9a--z7a--cycle; fill z8--z11--z11a--z8a--cycle;
+ penlabels(1,2,3,4,5,6,7,8,9,10,11,12);
+ labels(1a,2a,3a,4a,5a,8a,9a,10a,11a);
+ math_fit(-0.5cap_height#*slant,cap_height#*slant-1.5u#);%
+endchar;
+
+beginchar("X",12u#+2appr#,cap_height#,0); "The letter X";
+ italcorr cap_height#*slant-0.5u#;
+ complete_X(0.375u);
+ math_fit(0,0);
+endchar;
+
+% a modifier
+beginchar("Y",12u#+2appr#,cap_height#,0); "The letter Y";
+ italcorr cap_height#*slant-0.5u#;
+ center_bar(3,4); bot y3=bot y4=-d;
+ x3l=apprl+hround(0.5(w-apprr-apprl-hthick-thin*(1++slant)));
+ x4l-x3l=hround(hthick+thin*(1++slant));
+ x3r-x3l=x4l-x4r=thin*(1++slant);
+ y4l=y3l=-d; y3r-y3l=y4r-y4l=thin;
+ y1=y6=y7r=h; x1=apprl; x7r=w-apprr;
+ x2=x3; y2=y5a=0.4h; x6-x1=x5a-x2=diag_width(thick,z1-z2);
+ a:=diag_width(thin,z1-z2);
+ penpos1(a,0); penpos6(a,180); z8=z5;
+ forsuffixes $=,r,l: x5$=x4$; z5$-z6$=whatever*(z2-z1); endfor
+ forsuffixes $=r,l: x2$=x3$; z2$-z1$=whatever*(z2-z1); endfor
+ y1-y1a=y6-y6a=thin; z1a=whatever[z1,z2]; z6a=whatever[z6,z5a];
+ adjust_slanted_bar(7r,8,7,8a)(0.5thin,-1); z7-z7l=z7r-z7;
+ ortho_penpos8(thin,z7-z8);
+ penstroke z1e--z2e--z3e--z4e--z5e--z6e;
+ fill z1--z6--z6a--z1a--cycle; penstroke z7e..z8e;
+ penlabels(1,2,3,4,5,6,7,8,9,10); labels(1a,5a,6a,8a);
+ math_fit(-0.5cap_height#*slant,cap_height#*slant-3u#);
+endchar;
+
+beginchar("Z",10.15u#+2appr#,cap_height#,0); "The letter Z";
+ italcorr cap_height#*slant-0.5u#;
+ pickup circle.nib;
+ z1l=(apprl-hround 0.2u,0);
+ z2l=(w-apprr+hround 0.2u,0);
+ z3r=(apprl+hround 0.2u,h);
+ z4r=(w-apprr,h);
+ penpos1(thin,90); penpos2(thin,90);
+ penpos3(thin,90); penpos4(thin,90);
+ z5l=z1r; z8r=z4l;
+ adjust_slanted_bar(5l,8r,6r,7l)(thick+thin,-1);
+ a:=diag_width(thin,z8r-z6r);
+ penpos5(a,0); penpos6(a,0); penpos7(a,0); penpos8(a,0);
+ penstroke z1e..z2e; penstroke z3e..z4e;
+ penstroke z5e..z7e; penstroke z6e..z8e;
+ penlabels(1,2,3,4,5,6,7,8);
+ math_fit(0,0.5cap_height#*slant);
+endchar;
diff --git a/fonts/mbboard/source/mbbromxl.mf b/fonts/mbboard/source/mbbromxl.mf
new file mode 100644
index 0000000000..591ef47671
--- /dev/null
+++ b/fonts/mbboard/source/mbbromxl.mf
@@ -0,0 +1,197 @@
+% blackboard typefaces by Anthony Phan.
+% file: mbbromxl.mf (extended roman lowercase)
+% last modification: 25.10.2001.
+
+% Crossed letters are no more generated (except `bbcross_d').
+% They appear only with Cork encoding.
+
+def horizontal_rules_list=
+ -body_depth,-desc_depth,0.5x_height,x_height,cap_height,
+ asc_height,body_height
+enddef;
+
+use_rule1;
+
+numeric slash_width;
+slash_width=hround(3.8u+hthick+thin);
+
+beginchar(bbes_zet,8u#+2appr#,asc_height#,0);
+ "German letter es-zet";
+ italcorr 0.5[x_height#,asc_height#]*slant-.5u#;
+ pickup circle.nib;
+ lft x1=lft x2=apprl; rt x4=w-apprr;
+ rt x6=w-apprr+ho; x3=x5=0.5[x1,x4]; x8-x1=hthick;
+ bot y1=0; top y3=h+oo; top y5=x_height;
+ y2=y4=0.5[y5,y3]; y6=0.5[y7,y5];
+ if ab_down_factor>0: bot y7=-oo;
+ x7=ab_down_factor[(x1+x6)/2,(x1+x4+2x6)/4];
+ y8=ab_down_factor[top 0,y5];
+ else: bot y7=bot y8=0; x7=0.5[x1,x6]; fi
+ tmp_path:=z1..z2 up_to_right z3 right_to_down z4
+ down_to_left z5 &z5 right_to_down z6 down_to_left z7
+ if ab_down_factor>0: left_to_up else: .. fi z8;
+ draw tmp_path;
+ bbbowl(z5,z6,z7,hThick) tmp_path;
+ bbbowl(z3,z4,z5,max(0,x4-x.bowl.mid)) tmp_path;
+ hbbowl(z3,z2,z1,hthick) tmp_path;
+ pickup square.nib; draw z1..z.bowl.bot;
+ square_end5(left);
+ labels(1,2,3,4,5,6,7,8);
+endchar;
+
+iff variant_a:
+beginchar(bbae,16u#+ho#-thin#-hThick#+2appr#,x_height#,0);
+ "The letter ae";
+ italcorr 0.6x_height#*slant+ho#-.5u#;
+ save tmp_path; path tmp_path[]; numeric t[];
+ % `a' part
+ center_bar(5,4); x3=x4;
+ lft x1=apprl+hround 0.2u;
+ top y2=h+uo; bot y4=0; y3=0.3[y2+oo-uo,y4];
+ bot y1=vround max(0.72h,y3);
+ tmp_path1:=z4..z3 & elliptic_arc(3,2,1);
+ hbbowl(z2,z3,z4,hthick) tmp_path1; z5=z.bowl.bot;
+ x11=x7=x5; lft x9=apprl-ho; x8=0.5[x9,0.5[x5,x4]];
+ if ab_down_factor>0: bot y8=-oo; y7=ab_down_factor[y4,bot h];
+ else: y8=y7=y4; fi
+ top y11=min(vround 0.7h,top y3); slope:=(y11-y4)/16u;
+ ellipse_set(8,9,10,11);
+ tmp_path2=z7 if ab_down_factor>0: down_to_left else: .. fi
+ z8 left_to_up z9...z10---z11;
+ if straight_bowl: bbbowl(z11,z9,z8,hThick) tmp_path2;
+ else: begingroup interim superness:=superbowl;
+ draw 0.5[z10,z11]{z10-z11}...(x9+hThick,y9) down_to_right z8;
+ endgroup; fi
+ draw tmp_path1; draw tmp_path2;
+ pickup square.nib; draw z4..z5;
+ square_end1(z1-z1');
+ % `e' part
+ pickup circle.nib;
+ rt x14=w-apprr+ho; x5-x16=ho; x19=x4;
+ x15=x17=0.5[x14,x16];
+ top y15=h+uo; bot y17=-oo;
+ y14=y16=y19=good.y(0.5[y15,y17]);
+ tmp_path3=superellipse(z14,z15,z16,z17,superness);
+ t1=xpart(tmp_path3 intersectiontimes tmp_path1);
+ t2=xpart(tmp_path3 intersectiontimes ((x4,y16)..(x4,y17)));
+ t3=xpart(tmp_path3 intersectiontimes
+ (bot(w/2,0.25[y17,y15])..bot(w,0.25[y17,y15])));
+ z18=point t3 of tmp_path3;
+ draw subpath (0,t1) of tmp_path3;
+ draw z4--subpath (t2,t3) of tmp_path3;
+ hbbowl(z15,z14,z14,hThick) tmp_path3;
+ x19r=x19l=x19; x14r=x14; x14m=x14l=rt x14;
+ y19r=y14r=top y14; y14m=y14; y14l=y19l=bot y14;
+ fill z14l--z14m--z14r--z19r--z19l--cycle;
+ square_end18(direction t3 of tmp_path3);
+ labels(range 1 thru 19,14m,14l,14r,19l,19r);
+endchar;
+
+iff not variant_a:
+beginchar(bbae,16u#+ho#-thin#-hThick#+2appr#,x_height#,0);
+ "The letter ae";
+ italcorr 0.6x_height#*slant+ho#-.5u#;
+ center_bar(17',17);
+ begingroup save apprr; apprr=w-rt x17;
+ complete_left_lower(ab_down_factor,ab_up_factor);
+ endgroup;
+ numeric t[];
+ pickup circle.nib;
+ rt x12=w-apprr+ho; x17'-x14=ho;
+ x13=x15=0.5[x12,x14];
+ top y13=h+uo; bot y15=-oo;
+ y12=y14=y17=y17'=good.y(0.5[y13,y15]);
+ tmp_path:=superellipse(z12,z13,z14,z15,superness);
+ t1=xpart(tmp_path intersectiontimes ((x1,y14)..(x1,y13)));
+ t2=xpart(tmp_path intersectiontimes ((x1,y14)..(x1,y15)));
+ t3=xpart(tmp_path intersectiontimes
+ (bot(w/2,0.25[y15,y13])..bot(w,0.25[y15,y13])));
+ z16=point t3 of tmp_path;
+ draw subpath (0,t1) of tmp_path--z17;
+ draw z17--subpath (t2,t3) of tmp_path;
+ hbbowl(z13,z12,z12,hThick) tmp_path;
+ x17r=x17l=x17; x12r=x12; x12m=x12l=rt x12;
+ y17r=y12r=top y12; y12m=y12; y12l=y17l=bot y12;
+ fill z12l--z12m--z12r--z17r--z17l--cycle;
+ square_end16(direction t3 of tmp_path);
+ labels(12,12m,12l,12r,13,14,15,16,17,17',17l,17r,18,19);
+endchar;
+
+beginchar(bboe,16u#+2ho#-thin#-hThick#+2appr#,x_height#,0);
+ "The letter oe";
+ italcorr 0.6x_height#*slant+ho#-.5u#;
+ numeric t;
+ pickup circle.nib;
+ top y2=top y6=h+uo; bot y4=bot y8=-oo;
+ y1=y3=y5=y7=good.y(0.5[y2,y4]);
+ lft x3=apprl-ho; rt x5=w-apprr+ho;
+ x2=x4=0.5[x3,x1]; x6=x8=0.5[x7,x5]; x1-x3=x5-x7;
+ x1-x7=hThick; tmp_path:=superellipse(z1,z2,z3,z4,superness);
+ tmpp_path:=superellipse(z5,z6,z7,z8,superness);
+ bbbowl(z2,z3,z4,hThick) tmp_path;
+ t=xpart(tmpp_path intersectiontimes
+ (bot(x8,0.25[y8,y6])..bot(w,0.25[y8,y6])));
+ z13=point t of tmpp_path;
+ draw tmp_path;
+ draw subpath (0,t) of tmpp_path;
+ hbbowl(z6,z5,z5,hThick) tmpp_path;
+ x1r=x1l=x1; x5r=x5; x5m=x5l=rt x5;
+ y1r=y5r=top y5; y5m=y5; y5l=y1l=bot y5;
+ fill z5l--z5m--z5r--z1r--z1l--cycle;
+ square_end13(direction t of tmpp_path);
+ labels(range 1 thru 16,5m,5l,5r,1l,1r);
+endchar;
+
+beginchar(bbslash_o,8u#+2appr#,x_height#+0.5desc_depth#,0.5desc_depth#);
+ "The letter slash o";
+ italcorr 0.6x_height#*slant+ho#-.5u#;% not perfect at all...
+ pickup circle.nib;
+ bbcircle1(apprl-ho,w-apprr+ho,x_height+uo,-oo); draw last_path;
+ bbbowl(z1b,z1a,z1d,hThick) last_path; z3=z.bowl.top;
+ bbbowl(z1b,z1c,z1d,hThick) last_path; z2=z.bowl.bot;
+ y4=-d; y5=h;
+ z4=whatever[z2,z3]; z5=whatever[z2,z3];
+ penpos4(diag_width(thin,z3-z2),0);
+ penpos5(diag_width(thin,z3-z2),0);
+ penstroke z4e..z5e; penlabels(2,3,4,5);
+endchar;
+
+iff known bbcross_d:
+beginchar(bbcross_d,8u#+2appr#,asc_height#,0);
+ "The letter crossed d";
+ italcorr asc_height#*slant-1.5u#;
+ pickup circle.nib;
+ top y1=top y2=h; bot y4=-oo;
+ top y6=x_height if ab_up_factor>0: +oo fi;
+ y3=0.4[y4,y2]; y5=0.5[y4,y6]; if ab_up_factor>0:
+ y7=ab_up_factor[bot x_height, top 0]; else: y7=y6; fi
+ lft x1=apprl+hround u; rt x3=w-apprr+ho; lft x5=apprl-ho;
+ x3-x7=hThick; x4=x6=0.5[x5,x3]; x2=0.25[x1,x7];
+ tmp_path:=z1..z2 right_to_down z3 down_to_left z4
+ left_to_up z5 up_to_right z6;
+ draw tmp_path;
+ bbbowl(z6,z5,z4,hThick) tmp_path;
+ hbbowl(z2,(x3,y7),(x3,y7),x3-x7) tmp_path;
+ hbbowl(z4,(x3,y5),(x3,y7),x3-x7) tmp_path;
+ draw z6 if ab_up_factor>0: right_to_down else: .. fi z7;
+ x8=x1; rt x9=w-apprr-hround u; y9=y2;
+ y8=good.y 0.3[y6,y1]; draw z8..z9;
+ square_end1(left); square_end8(z8-z9);
+ square_end9(z8-z9);
+ labels(1,2,3,4,5,6,7,8,9);
+endchar;
+
+iff known bbeng:
+beginchar(bbeng,8u#+2appr#,x_height#,desc_depth#);
+ "Lowercase eng";
+ italcorr 0.75x_height#*slant-.5u#;
+ j_bar:=true; complete_n;
+endchar;
+
+iff known bbthorn:
+beginchar(bbthorn,8u#+2appr#,asc_height#,desc_depth#);
+ "Lowercase thorn";
+ italcorr 0.6x_height#*slant+ho#-.5u#;
+ complete_right_lower(lower_down_curve_factor,lower_up_curve_factor);
+endchar;
+
diff --git a/fonts/mbboard/source/mbbromxu.mf b/fonts/mbboard/source/mbbromxu.mf
new file mode 100644
index 0000000000..7f62dd8644
--- /dev/null
+++ b/fonts/mbboard/source/mbbromxu.mf
@@ -0,0 +1,111 @@
+% blackboard typefaces by Anthony Phan.
+% file: mbbromxu.mf (extended roman uppercase)
+% last modification: 25.10.2001.
+
+% Crossed letters are no more generated.
+% They appear only with Cork encoding.
+
+def horizontal_rules_list=0.4cap_height,0.5cap_height,0.6cap_height,
+ -body_depth,-desc_depth,cap_height,asc_height,body_height
+enddef;
+
+use_rule2;
+
+beginchar(bbAE,15.25u#+2appr#,cap_height#,0);
+ "The letter AE";
+ italcorr cap_height#*slant-.5u#;
+ pickup circle.nib;
+ rt x5=rt x8=w-apprr; rt x5-lft x6=rt x8-lft x7=hround 7.5u;
+ top y5=top y9=top y6=h; bot y7=bot y10=bot y8=0;
+ lft x11=x10=x9=x6+hthick; bot y11=bot y12=vround 0.5h;
+ rt x12=w-apprr-hround 0.7u;
+ z1l=(apprl-0.5u,0); z2l=(lft x6,h);
+ penpos1(diag_width(thin,z2l-z1l),0);
+ penpos2(diag_width(thin,z2l-z1l),0);
+ y0=y2l; x0=x6; z2a=whatever[z6,z7]; z2a=whatever[z1r,z2r];
+ bot y3=bot y4=vround 0.25h; x4=x6; z3=whatever[z1,z2];
+ fill z1l--z1r--z2a--z0--z2l--cycle; draw z3..z4; draw z9..z10;
+ pickup square.nib; draw z5--z6--z7--z8; draw z11..z12;
+ labels(range 3 thru 12); penlabels(0,1,2);
+ math_fit(0,0.5ic#);
+endchar;
+
+beginchar(bbOE,16u#+2appr#,cap_height#,0);
+ "The letter OE";
+ italcorr cap_height#*slant-.5u#;% not perfect at all...
+ numeric t[];
+ pickup circle.nib;
+ y1=y3=0.5[y4,y2]; top y2=h+o; bot y4=-o; x2=x4=0.5[x3,x1];
+ lft x3=apprl; x1=x13+hThick-hthick;
+ rt x9=rt x12=w-apprr; rt x9-lft x10=rt x12-lft x11=hround 7.5u;
+ top y9=top y13=top y10=h; bot y11=bot y14=bot y12=0;
+ lft x15=x14=x13=x10+hthick; bot y15=bot y16=vround 0.5h;
+ rt x16=w-apprr-hround 0.7u;
+ tmp_path:=superellipse(z1,z2,z3,z4,superness);
+ bbbowl(z2,z3,z4,hThick) tmp_path;
+ t1=xpart(tmp_path intersectiontimes ((x10,y2)..(x10,y3)));
+ t2=xpart(tmp_path intersectiontimes ((x10,y3)..(x10,y4)));
+ z7=point t2 of tmp_path; z8=point t1 of tmp_path;
+ draw z10..z8&subpath(t1,t2) of tmp_path&z7..z11; draw z13..z14;
+ pickup square.nib; draw z9--z10--z11--z12; draw z15..z16;
+ labels(range 1 thru 16);
+ math_fit(0,0.5ic#);
+endchar;
+
+beginchar(bbslash_O,13u#+2appr#,cap_height#+0.5desc_depth#,0.5desc_depth#);
+ "The letter slash O";
+ italcorr 0.7cap_height#*slant-.5u#;
+ pickup circle.nib;
+ bbcircle1(apprl,w-apprr,cap_height+o,-o); draw last_path;
+ bbbowl(z1b,z1a,z1d,hThick) last_path; z3=z.bowl.top;
+ bbbowl(z1b,z1c,z1d,hThick) last_path; z2=z.bowl.bot;
+ y4=-d; y5=h;
+ z4=whatever[z2,z3]; z5=whatever[z2,z3];
+ penpos4(diag_width(thin,z3-z2),0);
+ penpos5(diag_width(thin,z3-z2),0);
+ penstroke z4e..z5e; penlabels(2,3,4,5);
+ math_fit(0.3cap_height#*slant-0.5u#,ic#);
+endchar;
+
+iff known bbEng:
+beginchar(bbEng,12u#+Appr#+appr#,cap_height#,0);
+ "The letter Eng";
+ italcorr 0.8cap_height#*slant-.5u#;
+ pickup circle.nib;
+ lft x1=lft x3=Apprl; rt x7=rt x8=w-apprr; x4-x3=x2-x1=hthick;
+ x5=x4; x6=0.5[x4,x7]; x9=0.5[x10,x8]; rt x8-lft x10=hround(7.2u);
+ if x10<x2: x10:=x2; fi
+ bot y1=bot y2=0; top y3=top y4=h; y5=y7; top y6=h+o; y6-y7=y8-y9;
+ top y8=top y10=vround 0.3h; bot y9=-o;
+ tmp_path:=z5 up_to_right z6 right_to_down z7..z8 down_to_left
+ z9 left_to_up z10;
+ draw tmp_path;
+ hbbowl(z6,z7,0.5[z7,z8],hthick) tmp_path;
+ hbbowl(z9,z8,0.5[z7,z8],hthick) tmp_path;
+ pickup square.nib;
+ draw z1--z2--z4--z3--cycle;
+ square_end10(up);
+ labels(1,2,3,4,5,6,7,8,9,10);
+endchar;
+
+iff known bbThorn:
+beginchar(bbThorn,10.15u#+Appr#+appr#,cap_height#,0);
+ "The letter Thorn";
+ italcorr 0.6cap_height#*slant-.5u#;
+ pickup circle.nib;
+ lft x1=lft x2=Apprl; rt x7=w-apprr;
+ x3=x4=x5=x9=x1+hthick; x6=x8=0.5[x1,x7];
+ bot y1=bot y4=0; top y2=top y3=h;
+ top y5=top y6=vround 0.825h;
+ bot y8=bot y9=vround 0.225h;
+ y7=0.5[y8,y6];
+ tmp_path:=z5..z6 right_to_down z7 down_to_left z8..z9;
+ bbbowl(z6,z7,z8,hThick) tmp_path; draw tmp_path;
+ pickup square.nib; draw z1--z2--z3--z4--cycle;
+ labels(1,2,3,4,5,6,7,8,9);
+endchar;
+
+
+
+
+
diff --git a/fonts/mbboard/source/mbbsc10.mf b/fonts/mbboard/source/mbbsc10.mf
new file mode 100644
index 0000000000..caef251e01
--- /dev/null
+++ b/fonts/mbboard/source/mbbsc10.mf
@@ -0,0 +1,28 @@
+% blackboard typefaces by Anthony Phan.
+% file: mbbsc10.mf (parameters' file for 10 points small caps fonts)
+% last modification: 25.10.2001.
+
+% To be checked
+
+if unknown mbbbase: input mbbbase fi
+
+font_identifier:="mbbsc"; font_size 10pt#;
+
+slant:=0;
+square_dots:=true;
+variant_a:=false; variant_f:=false;
+variant_y:=false; variant_g:=false;
+ab_up_factor:=0; ab_down_factor:=0;
+hmn_factor:=0; uy_factor:=0;
+
+input mbblight;
+lower.u#:=17/36pt#; % unit width
+lower.letter_fit#:=2.4/36pt#; % extra space added to all sidebars
+lower.body_height#:=200/36pt#; % height of tallest characters
+lower.x_height#:=116/36pt#; % height of small lowercase
+lower.cap_height#:=185/36pt#; % height of uppercase and tall lowercase
+lower.o#:=5/36pt#; % amount of vertical overshoot for curves
+
+input mbbsmcdr;
+
+
diff --git a/fonts/mbboard/source/mbbsl10.mf b/fonts/mbboard/source/mbbsl10.mf
new file mode 100644
index 0000000000..f0dfe59c76
--- /dev/null
+++ b/fonts/mbboard/source/mbbsl10.mf
@@ -0,0 +1,18 @@
+% blackboard typefaces by Anthony Phan.
+% file: mbbsl10.mf (parameters' file for 10 points slanted fonts)
+% last modification: 25.10.2001.
+
+if unknown mbbbase: input mbbbase fi
+
+font_identifier:="mbbsl"; font_size 10pt#;
+
+slant:=1/6;
+square_dots:=false;
+variant_a:=true; variant_f:=false;
+variant_g:=false; variant_y:=false;
+old_digits:=false; square_hebrew:=false;
+ab_up_factor:=0.05; ab_down_factor:=0.15;
+hmn_factor:=0.15; uy_factor:=0.15;
+
+input mbblight;
+input mbbdrivr; \ No newline at end of file
diff --git a/fonts/mbboard/source/mbbsmcdr.mf b/fonts/mbboard/source/mbbsmcdr.mf
new file mode 100644
index 0000000000..e40fb0dc19
--- /dev/null
+++ b/fonts/mbboard/source/mbbsmcdr.mf
@@ -0,0 +1,121 @@
+% blackboard typefaces by Anthony Phan.
+% file: mbbsmcdr.mf (small caps driver file)
+% last modification: 25.10.2001.
+
+mode_setup; font_setup;
+font_coding_scheme:="mbb small caps";
+% desserves much more care.
+
+% encoding
+
+ bbes_zet=hex"19";
+ bbslash_o=hex"1C"; bbslash_O=hex"1F";
+ bbae=hex"1A"; bbAE=hex"1D";
+ bboe=hex"1B"; bbOE=hex"1E";
+
+ bbgrave=hex"12"; bbacute=hex"13";
+ bbcircumflex=hex"5E"; bbhacheck=hex"14"; bbtilde=hex"7E";
+ bbbreve=hex"15"; bbmacron=hex"16";
+ bbdotaccent=hex"5F"; bbumlaut=hex"7F";bbcirc_accent=hex"17";
+ bbcedilla=hex"18";
+% bblong_umlaut:=hex"7D";
+ bbleft_slanted_cross=hex"20";
+% bbogonek=hex"22";% Polish
+ bbrough=hex"9E"; bbsmooth=hex"9F";% Greek
+% bbstraight_accent=hex"E0";% Greek
+
+ bbstar=hex"2A"; bbcomma=hex"2C"; bbperiod=hex"2E";
+ bbcolon=hex"3A"; bbsemicolon=hex"3B";
+ bbquestion_mark=hex"3F"; bbexclamation_point=hex"21";
+ bbspanish_shriek=hex"05"; bbspanish_query=hex"06";
+ bbslash=hex"2F"; bbback_slash=hex"5C";
+
+ vertical=hex"7C";
+ parenthesis_left=hex"28"; parenthesis_right=hex"29";
+ bracket_left=hex"5B"; bracket_right=hex"5D";
+ brace_left=hex"7B"; brace_right=hex"7D";
+
+ bbapostrophe=hex"27"; bbreverse_apostrophe=hex"60";
+ bbopening_quotes=hex"02"; bbclosing_quotes=hex"03";
+ bbgerman_opening_quotes=hex"04";
+ bbstraight_quotes=hex"22"; % ASCII location
+ bbdash=hex"2D"; bben_dash=hex"00"; bbem_dash=hex"01";
+ ligtable bbdash: bbdash=:bben_dash;
+ ligtable bben_dash: bbdash=:bbem_dash;
+ ligtable bbreverse_apostrophe: bbreverse_apostrophe=:bbopening_quotes;
+ ligtable bbapostrophe: bbapostrophe=:bbclosing_quotes;
+ ligtable bbcomma: bbcomma=:bbgerman_opening_quotes;
+ ligtable bbexclamation_point: bbreverse_apostrophe=:bbspanish_shriek;
+ ligtable bbquestion_mark: bbreverse_apostrophe=:bbspanish_query;
+
+% bbhash_mark=hex"23";
+ bbdollar=hex"24";
+% bbpercent=hex"25";
+ bbesperluette=hex"26";
+% bbat_sign=hex"40";
+% bbpartial_derivative=hex"A0";
+% bbperthousand=hex"E8";
+% bbeuro=hex"E9"; bbpound=hex"EA"; bbcent=hex"EB"; bbyen=hex"EC";
+
+ bbAlpha=hex"81"; bbBeta=hex"82"; bbGamma=hex"83"; bbDelta=hex"84";
+ bbEpsilon=hex"85"; bbZeta=hex"86"; bbEta=hex"87"; bbTheta=hex"88";
+ bbIota=hex"89"; bbKappa=hex"8A"; bbLambda=hex"8B"; bbMu=hex"8C";
+ bbNu=hex"8D"; bbXi=hex"8E"; bbOmicron=hex"8F"; bbPi=hex"90";
+ bbRho=hex"91"; bbSigma=hex"92"; bbTau=hex"93"; bbUpsilon=hex"94";
+ bbPhi=hex"95"; bbChi=hex"96"; bbPsi=hex"97"; bbOmega=hex"98";
+ boolean variant_Upsilon; variant_Upsilon=false;
+ bbslash_Sigma=hex"9A"; bbnabla=hex"9B"; bbcoprod=hex"9C";
+ bbmho=hex"9D";
+% bbDigamma=hex"E1"; bbKoppa=hex"E2"; bbSampi=hex"E3";
+
+% Activate to allow characters with undefined code.
+% (for proof mode compilation)
+
+%def iff expr b=
+% if b: let next_=use_it else: let next_=use_it fi; next_
+%enddef;
+
+extra_endchar:=extra_endchar&";charcode:=charcode+code_offset;";
+code_offset:=0;
+
+% let the show begin:
+
+input mbbromup;
+input mbbromxu;
+input mbbdigit;
+input mbbaccnt;
+input mbbpunct;
+input mbbsymbl;
+input mbbgrkup;
+
+forsuffixes $=u,letter_fit,body_height,cap_height,x_height,o:
+ $.#:=lower.$.#;
+endfor
+thin2#:=thin1#; thick2#:=thick1#;
+
+font_setup;
+
+code_offset:=ASCII"a"-ASCII"A";
+input mbbromup;
+input mbbgrkup;
+code_offset:=-3;
+input mbbromxu;
+
+% parameters for TFM files.
+
+font_slant=slant;
+font_x_height=x_height#;
+font_normal_stretch=3u#;
+font_normal_shrink=2u#;
+font_quad=18u#+4letter_fit#;
+font_extra_space=2u#;
+font_normal_space=6u#+2letter_fit#;
+
+bye.
+
+
+
+
+
+
+
diff --git a/fonts/mbboard/source/mbbsymbl.mf b/fonts/mbboard/source/mbbsymbl.mf
new file mode 100644
index 0000000000..1b6854a531
--- /dev/null
+++ b/fonts/mbboard/source/mbbsymbl.mf
@@ -0,0 +1,554 @@
+% blackboard typefaces by Anthony Phan.
+% file: mbbsymbl.mf (various blackboard symbols)
+% last modification: 25.10.2001.
+
+def horizontal_rules_list=math_axis,
+ -body_depth,-desc_depth,x_height,cap_height,asc_height,body_height
+enddef;
+
+% usual symbols
+
+iff known equal_sign:
+compute_spread(.35x_height#,.45x_height#);
+beginchar(equal_sign,12u#+2appr#,v_center(spread#+rule_thickness#));
+ "Equality sign";
+ italcorr charht*slant-.5u#;
+ penpos1(rule_thickness,90); penpos2(rule_thickness,90);
+ penpos3(rule_thickness,90); penpos4(rule_thickness,90);
+ x1=x3=Apprl; x2=x4=w-Apprr;
+ y1=y2; y3=y4; y1-y3=spread; .5[y1,y3]=math_axis;
+ penstroke z1e..z2e; % upper bar
+ penstroke z3e..z4e; % lower bar
+ penlabels(1,2,3,4);
+endchar;
+
+iff known plus_sign:
+beginchar(plus_sign,12u#+2appr#,6u#+math_axis#,6u#-math_axis#);
+ "Plus sign";
+ italcorr charht*slant-.5u#;
+ penpos1(rule_thickness*(1++slant),0);
+ penpos2(rule_thickness*(1++slant),0);
+ penpos3(rule_thickness,90); penpos4(rule_thickness,90);
+ x1l=x2l=hround(0.5[Apprl,w-Apprr]-0.5rule_thickness*(1++slant));
+ x3=Apprl; y3=y4=math_axis; x1l-x3=x4-x1r=y1-y3r=y3l-y2;
+ penstroke z1e..z2e; % stem
+ penstroke z3e..z4e; % crossbar
+ penlabels(1,2,3,4);
+endchar;
+
+iff known minus_sign:
+beginchar(minus_sign,12u#+2appr#,6u#+math_axis#,6u#-math_axis#);
+ "Minus sign";
+ italcorr charht*slant-.5u#;
+ penpos1(rule_thickness,90); penpos2(rule_thickness,90);
+ y1=y2=math_axis; x1=Apprl; x2=w-Apprr;
+ penstroke z1e..z2e;
+ penlabels(1,2,3,4);
+endchar;
+
+iff known hash_sign:
+compute_spread(.35x_height#,.45x_height#);
+beginchar(hash_sign,12u#+2appr#,6u#+math_axis#,6u#-math_axis#);
+ "Hash sign";
+ italcorr charht*slant-.5u#;
+ penpos1(rule_thickness,90); penpos2(rule_thickness,90);
+ penpos3(rule_thickness,90); penpos4(rule_thickness,90);
+ penpos5(rule_thickness*(1++slant),0);
+ penpos6(rule_thickness*(1++slant),0);
+ penpos7(rule_thickness*(1++slant),0);
+ penpos8(rule_thickness*(1++slant),0);
+ x5l=x6l=hround(0.5[Apprl,w-Apprr]
+ -0.5(rule_thickness+spread)*(1++slant));
+ x7l=x8l=hround(x5l+spread*(1++slant));
+ x1=x3=Apprl; x2=x4=x7r+(x5l-x1);
+ y1r=y2r=vround(math_axis+0.5(rule_thickness+spread));
+ y3r=y4r=y1r-spread;
+ %x5l-x1=y5-y1r=y3l-y6; y5=y7; y6=y8;
+ y5=y7=h; y5-y1r=y3l-y6; y6=y8;
+ penstroke z1e..z2e; penstroke z3e..z4e;
+ penstroke z5e..z6e; penstroke z7e..z8e;
+ penlabels(1,2,3,4,5,6,7,8);
+endchar;
+
+iff known inferior_sign:
+compute_spread(5/4x_height#,3/2x_height#);
+beginchar(inferior_sign,11u#+2appr#,
+ v_center(spread#+rule_thickness#));
+ "Inferior sign";
+ italcorr charht*slant-.5u#;
+ y2r=0.5[y1,y3]=vround math_axis+0.5; y1-y3=spread;
+ x1=w-apprr; x2r=apprl-0.5; x1=x1r=x3=x3r;
+ adjust_slanted_bar(2r,1,2a,1')(0.5rule_thickness,-1);
+ adjust_slanted_bar(2r,3,2b,3')(0.5rule_thickness,1);
+ z1r=whatever[z2r,z1']; z3r=whatever[z2r,z3'];
+ z1r-z1=z1-z1l; z3r-z3=z3-z3l;
+ z2l-z1l=whatever*(z2r-z1r); z2l-z3l=whatever*(z2r-z3r);
+ penstroke z1e--z2e--z3e;
+ penlabels(1,2,3); labels(1',3',2a,2b);
+endchar;
+
+iff known superior_sign:
+compute_spread(5/4x_height#,3/2x_height#);
+beginchar(superior_sign,11u#+2appr#,
+ v_center(spread#+rule_thickness#));
+ "Superior sign";
+ italcorr charht*slant-.5u#;
+ y2r=0.5[y1,y3]=vround math_axis+0.5; y1-y3=spread;
+ x1=apprl; x2r=w-apprr+0.5; x1=x1r=x3=x3r;
+ adjust_slanted_bar(2r,1,2a,1')(0.5rule_thickness,1);
+ adjust_slanted_bar(2r,3,2b,3')(0.5rule_thickness,-1);
+ z1r=whatever[z2r,z1']; z3r=whatever[z2r,z3'];
+ z1r-z1=z1-z1l; z3r-z3=z3-z3l;
+ z2l-z1l=whatever*(z2r-z1r); z2l-z3l=whatever*(z2r-z3r);
+ penstroke z1e--z2e--z3e;
+ penlabels(1,2,3); labels(1',3',2a,2b);
+endchar;
+
+% blackboard symbols
+
+iff known bbhash_mark:
+use_rule2;
+compute_spread(0.45x_height#,0.55x_height#);
+beginchar(bbhash_mark,13u#+2appr#,asc_height#,asc_depth#);
+ "Hash mark";
+ italcorr (math_axis#+0.5(spread#+thin#))*slant-0.5u#;
+ pickup circle.nib;
+ lft x9=lft x15=apprl; rt x14=rt x20=w-apprr;
+ x10-x9=x14-x13=hround((x14-x9-2hthick-thin)/3); x11-x10=x13-x12=hthick;
+ x1=x2=x10=x16; x3=x4=x11=x17; x5=x6=x12=x18; x7=x8=x13=x19;
+ bot y1=-d; y1=y4=y5=y8; top y2=h; y2=y3=y6=y7;
+ y9=good.y(math_axis-0.5spread); y9=y10=y11=y12=y13=y14;
+ y15=good.y(math_axis+0.5spread); y15=y16=y17=y18=y19=y20;
+ pickup square.nib;
+ draw z1--z2--z3--z4--cycle; draw z5--z6--z7--z8--cycle;
+ draw z9..z10; draw z11..z12; draw z13..z14;
+ draw z15..z16; draw z17..z18; draw z19..z20;
+ labels(range 1 thru 20);
+endchar;
+
+% The small zero for `per cent sign' and al. is defined here.
+if (known bbpercent)or(known bbperthousand)or(known bbsmall_zero)
+ or(known bbpertenthousand):
+ begingroup
+ use_rule1;
+ clearit; clearxy;
+ h:=vround(hppp*(0.5asc_height#));
+ d:=vround(hppp*(body_height#-asc_height#));
+ w:=hround(hppp*(7.5u#+2appr#));
+ save hThick; hThick:=hthick;
+ pickup circle.nib;
+ bbcircle1(apprl,w-apprr,h,0); draw last_path;
+ bbbowl(z1b,z1a,z1d,hThick) last_path;
+ bbbowl(z1b,z1c,z1d,hThick) last_path;
+ picture tmp_picture; tmp_picture=currentpicture;
+ numeric tmp_w,tmp_h; tmp_w=w; tmp_h=h;
+ endgroup;
+fi
+
+iff known bbpercent:
+use_rule1;
+beginchar(bbpercent,16u#+2appr#,body_height#,
+ body_height#-asc_height#);
+ "Per cent sign";
+ italcorr body_height#*slant-2.5u#;
+ y1l=-d; y2r=h; x1l-apprl=w-apprr-x2r=hround 2u;
+ adjust_slanted_bar(1l,2r,1r,2l)(thin,-1); penstroke z1e..z2e;
+ currentpicture:=currentpicture
+ +(tmp_picture shifted((tmp_h+d)*slant,asc_height-tmp_h))
+ +(tmp_picture shifted(w-tmp_w,0));
+ penlabels(1,2);
+endchar;
+
+% The widths of the small zero and of the next character
+% are adjusted so that the distance between the two lowest
+% small zeroes is exactly 0.5u# (independent of letter_fit#).
+% This should be remembered when defining kerning rules.
+
+iff known bbperthousand:
+use_rule1;
+beginchar(bbperthousand,24u#+2appr#,body_height#,
+ body_height#-asc_height#);
+ "Per thousand sign";
+ italcorr body_height#*slant-u#;
+ a:=hround(hppp*(16u#+2appr#));
+ currentpicture:=currentpicture
+ +(tmp_picture shifted((tmp_h+d)*slant,asc_height-tmp_h))
+ +(tmp_picture shifted(w-tmp_w,0))
+ +(tmp_picture shifted(a-tmp_w,0));
+ y1l=-d; y2r=h; x1l-apprl=a-apprr-x2r=hround 2u;
+ adjust_slanted_bar(1l,2r,1r,2l)(thin,-1);
+ penstroke z1e..z2e; penlabels(1,2);
+endchar;
+
+iff known bbpertenthousand:
+use_rule1;
+beginchar(bbpertenthousand,31.5u#+2appr#,body_height#,
+ body_height#-asc_height#);
+ "Per ten thousand sign";
+ italcorr body_height#*slant-10u#;
+ a:=hround(hppp*(16u#+2appr#));
+ currentpicture:=currentpicture
+ +(tmp_picture shifted((tmp_h+d)*slant,asc_height-tmp_h))
+ +(tmp_picture shifted(w-tmp_w,0))
+ +(tmp_picture shifted(a-tmp_w,0))
+ +(tmp_picture shifted(0.5(a+w)-tmp_w,0));
+ y1l=-d; y2r=h; x1l-apprl=a-apprr-x2r=hround 2u;
+ adjust_slanted_bar(1l,2r,1r,2l)(thin,-1);
+ penstroke z1e..z2e; penlabels(1,2);
+endchar;
+
+iff known bbsmall_zero:
+use_rule1;
+beginchar(bbsmall_zero,7.5u#+2appr#,0.5asc_height#,
+ body_height#-asc_height#);
+ "Small zero";
+ currentpicture:=tmp_picture;
+endchar;
+
+iff known bbampersand:
+use_rule1;
+beginchar(bbampersand,11u#+2appr#,asc_height#,0);
+ "The ampersand";
+ italcorr x_height#*slant-.5u#;
+ numeric second_slope,t;
+ pickup circle.nib;
+ y2=0.558h; x4-x10=hround 0.9u; rt x6-lft x4=hround 5.6u;
+ x17-x4=hround 0.5[thin,thick]; lft x10=apprl-ho;
+ x5=x11=max(0.5[x4,x6],x17+eps);
+ x2-x10=hThick; x15=w-apprr; y15=0;
+ adjust_slanted_bar(2,15,2a,1)(thick,1);
+ slope:=(y2-y1)/(x2-x1); second_slope=-0.56slope;
+ a:=diag_width(thin,(1,slope));
+ penpos1(a,0); penpos15(a,0);
+ top y5=h+oo; bot y11=-oo;
+ ellipse_set(5,4,3,1); ellipse_set(5,17,16,15);
+ slope:=second_slope;
+ ellipse_set(11,10,9,2); ellipse_set(5,6,7,2);
+ x14r=w-apprr; y14r=x_height; z13r=whatever[z15,z16];
+ z13r=whatever[z14r,(0.5[x11,x1],0)];
+ penpos14(diag_width(thin,z14r-z13r),0);
+ z13l=whatever[z15,z16]; z14l-z13l=whatever*(z14r-z13r);
+ z13=whatever[z15,z16]; z14-z13=whatever*(z14r-z13r);
+ z12=whatever[z1,z2]; z12=whatever[z13,z14];
+ tmp_path:=z3{z3-z1}...z4 up_to_right z5 right_to_down z6
+ ...z7---z2---z9...z10 down_to_right z11...z12{z14-z13};
+ t=xpart(tmp_path intersectiontimes(z15..z16));
+ z8=point t of tmp_path;
+ ortho_penpos3(thin,z3-z1); ortho_penpos16(thin,z16-z15);
+ y1a-y1=thin; z1a-z1=z15a-z15=whatever*(z2-z1);
+ penstroke z1e..z3e; penstroke z15e..z16e; penstroke z13e..z14e;
+ fill z1--z1a--z15a--z15--cycle;
+ draw subpath (0,t) of tmp_path;
+ draw subpath (7,12) of tmp_path;
+ hbbowl(z11,z10,(x10,y2),x2-x10) tmp_path;
+ draw z16{z16-z15}...z17 up_to_right z5;
+ labels(1a,2,2a,4,5,6,7,8,9,10,11,12,15a,17);
+ penlabels(1,3,13,14,15,16);
+endchar;
+
+iff known bbat_sign:
+use_rule1;
+beginchar(bbat_sign,12u#+2appr#,asc_height#,0);
+ "At sign";
+ italcorr 0.7asc_height#*slant-.5u#;
+ numeric t; pickup circle.nib;
+ if hround((w+apprl-apprr-hThick-thin)/2)
+ <>(w+apprl-apprr-hThick-thin)/2: change_width fi;
+ lft x7=(w+apprl-apprr-hThick-thin)/2;
+ lft x3=apprl; rt x1=rt x5=w-apprr;
+ x6=x8=0.5[x7,x5]; y1=0.707[y3,y2];
+ top y4=h+oo; bot y2=-oo; x4=0.5[x2,0.5[x3,x5]];
+ bot y6=vround 0.2h-oo; top y8=vround 0.8h+oo;
+ y3=0.5[y2,y4]; y7=0.5[y6,y8];
+ tmp_path:=reverse elliptic_arc(3,2,1);
+ y5=0.5[y7,((x5-x4)/(x4-x3))[y4,y3]];% key formula
+ tmp_path:=tmp_path & z3 up_to_right z4 right_to_down z5
+ down_to_left z6 left_to_up z7 up_to_right z8 right_to_down z5;
+ bbbowl(z4,z5,z6,hThick) tmp_path;
+ t=12+xpart(subpath (12,infinity) of tmp_path
+ intersectiontimes bowl_path);
+ draw subpath (0,t) of tmp_path;
+ bbbowl(z4,z3,z2,hThick) tmp_path;
+ bbbowl(z8,z7,z6,hThick) tmp_path;
+ square_end1(z1-z1');
+ labels(1,1',2,3,4,5,6,7,8);
+endchar;
+
+iff known bbpartial:
+use_rule1;
+beginchar(bbpartial,8u#+2appr#,asc_height#,0);
+ "The partial derivative symbol";
+ italcorr .7asc_height#*slant-.5u#;
+ numeric t; pickup circle.nib;
+ top y2=h+oo; bot y4=-oo; y1=0.92[y4,y2];
+ top y6=x_height+oo; y3=0.43[y4,y2]; y5=0.5[y4,y6];
+ lft x1=apprl+hround 0.4u; rt x3=w-apprr+ho; lft x5=apprl-ho;
+ x4=x6=0.5[x5,x3]; x3=x7; y5=y7;
+ tmp_path:=reverse elliptic_arc(3,2,1) & z3 down_to_left
+ z4 left_to_up z5 up_to_right z6 right_to_down z7;
+ bbbowl(z6,z5,z4,hThick) tmp_path;
+ bbbowl(z2,z3,z4,hThick) tmp_path;
+ t=8+xpart(subpath (8,infinity) of tmp_path
+ intersectiontimes bowl_path);
+ draw subpath (0,t) of tmp_path;
+ square_end1(z1-z1');
+ labels(1,1',2,3,4,5,6,7);
+endchar;
+
+iff known bbWeierstrass_p:
+use_rule1;
+beginchar(bbWeierstrass_p,10u#+2appr#,x_height#,desc_depth#);
+ "The Weierstrass' p";
+ italcorr 0.6x_height#*slant+ho#-.5u#;
+ path tmp_path[]; numeric t[]; pickup circle.nib;
+ top y1=h+o; top y8=vround 0.9h+o; bot y10=-oo; bot y6=-d-o;
+ y0=0.5[y1,y6]; y9=0.5[y8,y10];
+ lft x2l=apprl-ho; rt x9=w-apprr+ho; x5r-x2l=hround 5u+2eps;
+ x2r-x2l=x5r-x5l=hround 0.375[thin,ess]; x0=x6=0.5[x2l,x5r];
+ x1=good.x x0; x9-x12=hThick; x8=x10=0.7[x2l,x9];
+ slope:=-(h+d)/9u; ortho_penpos0(ess,-(1,slope));
+ ellipse_set(1,2l,3l,0l); ellipse_set(1,2r,3r,0r);
+ ellipse_set(6,5l,4l,0l); ellipse_set(6,5r,4r,0r);
+ tmp_path1=z1 left_to_down z2r...z3r---z4r...z5r down_to_left z6;
+ tmp_path2=z1 left_to_down z2l...z3l---z4l...z5l down_to_left z6;
+ y7=0.5[y5r,y5l]; x7=good.x(2x0-0.5[x5r,x5l]);
+ y11''=y9; 0.5[x11'',x9]=x10; lft x11=max(rt x5r+0.25u,lft x11'');
+ y11'=y10;
+ tmp_path3=z7 up_to_right z8 right_to_down z9 down_to_left z10
+ left_to_up z11'';
+ t1=xpart(tmp_path3 intersectiontimes tmp_path2);
+ t2=xpart(tmp_path3 intersectiontimes tmp_path1);
+ t3=xpart(tmp_path3 intersectiontimes ((x11,y10)..(x11,y9)));
+ bbbowl(z8,z9,z10,hThick) tmp_path3;
+ z11=point t3 of tmp_path3; z11'-z11=whatever*(direction t3 of tmp_path3);
+ draw tmp_path1&z6 left_to_up z7&subpath (0,t1) of tmp_path3;
+ draw tmp_path2; draw subpath (t2,t3) of tmp_path3;
+ square_end1(right); square_end11(z11-z11');
+ penlabels(0,2,3,4,5); labels(1,6,7,8,9,10,11);
+endchar;
+
+% Currency signs
+
+iff known bbdollar:
+use_rule2;
+beginchar(bbdollar,8u#+2appr#,body_height#,body_height#-asc_height#);
+ "The dollar sign";
+ italcorr fig_height#*slant-.5u#;% I don't know why (see computer modern).
+ center_stem(10,13);
+ slope:=-asc_height/40u; y5=0.52asc_height;
+ top y2=asc_height+oo; bot y8=-oo;
+ y1=good.y 0.918[y8,y2]; y9=good.y 0.126[y8,y2];
+ lft x3l=lft x9-0.15u=apprl;
+ rt x7r=w-apprr; rt x1=w-apprr-0.825u;
+ x2=x5=x8=0.5[apprl,w-apprr];
+ x3r-x3l=x7r-x7l=hround 0.475[thin,cap_ess];
+ ortho_penpos5(cap_ess,(-1,-slope));
+ forsuffixes $=r,l:
+ ellipse_set(2,3.$,4.$,5.$); ellipse_set(8,7.$,6.$,5.$);
+ endfor
+ z1'-z1=(z2-z1)xscaled 0.36; z9-z9'=(z9-z8)xscaled 0.3;
+ tmp_path:=z1{z1'-z1}...z2 left_to_down z3l...z4l
+ ---z6l...z7l down_to_left z8;
+ tmpp_path:= z2 left_to_down z3r...z4r
+ ---z6r...z7r down_to_left z8...{z9-z9'}z9;
+ bot y10=-d; top y13=h;
+ z11=tmp_path intersectionpoint((x10,y3l)..(x10,y7l));
+ z12=tmpp_path intersectionpoint((x10,y3r)..(x10,y7r));
+ draw tmp_path; draw tmpp_path; draw z10..z11; draw z12..z13;
+ square_end10(down); square_end13(up);
+ square_end1(z1-z1'); square_end9(z9-z9');
+ labels(1,1',2,8,9,9',10,11,12,13); penlabels(3,4,5,6,7);
+endchar;
+
+iff known bbeuro:
+use_rule2;
+beginchar(bbeuro,12u#+2appr#,asc_height#,0);
+ "The euro sign";
+ italcorr asc_height#*slant-.5u#;
+ pickup circle.nib;
+ ortho_penpos2(thin,left); ortho_penpos4(thin,right);
+ x1l=x5l=x5r=w-apprr; lft x3=apprl+ceiling u-eps;
+ x0=x2=x4=(1/(1+cosd40))[rt x3,x1l];
+ top y2=h+o; bot y4=-o; y3=y0=0.5[y2,y4];
+ y1l-y0=y0-y5l=(y2l-y0)*sind 40;
+ y5l-y5r=thin/sind 40;
+ z1r-z1l=thin/cosd(angle(z1l-z4r)-40)*unitvector(z1l-z4r);
+ tmp_path:=z2 left_to_down z3 down_to_right z4;
+ draw tmp_path;
+ bbbowl(z2,z3,z4,hThick) tmp_path;
+ y8=good.y 0.6[y4,y2]; y12=good.y 0.4[y4,y2];
+ y8r=top y8; y8l=bot y8; y12r=top y12; y12l=bot y12;
+ y8r=y11r; y8l=y11l; y12r=y15r; y12l=y15l;
+ x8r=x12r=apprl; z8r-z8l=z12r-z12l=whatever*(z1l-z4r);
+ z11r=whatever[z1l,z4r]; z11l=whatever[z1l,z4r];
+ z15r=whatever[z1l,z4r]; z15l=whatever[z1l,z4r];
+ z9r=tmp_path intersectionpoint ((0,y8r)...(w,y8r));
+ z9l=tmp_path intersectionpoint ((0,y8l)...(w,y8l));
+ z10r=bowl_path intersectionpoint ((0,y8r)...(w,y8r));
+ z10l=bowl_path intersectionpoint ((0,y8l)...(w,y8l));
+ z13r=tmp_path intersectionpoint ((0,y12r)...(w,y12r));
+ z13l=tmp_path intersectionpoint ((0,y12l)...(w,y12l));
+ z14r=bowl_path intersectionpoint ((0,y12r)...(w,y12r));
+ z14l=bowl_path intersectionpoint ((0,y12l)...(w,y12l));
+ penstroke z1e...z2e{left}; penstroke z4e{right}...z5e;
+ penstroke z8e..z9e; penstroke z10e..z11e;
+ penstroke z12e..z13e; penstroke z14e..z15e;
+ penlabels(1,2,4,5,8,9,10,11,12,13,14,15);
+ labels(0,3,3,5);
+endchar;
+
+iff known bbpound:
+use_rule2;
+beginchar(bbpound,8.5u#+2appr#,asc_height#,0);
+ "The pound sign";
+ italcorr asc_height#*slant-.5u#;% to be corrected
+ pickup circle.nib;
+ lft x1=lft x3=apprl; rt x2=w-apprr;
+ hround((w-apprl-apprr-hthick-thin)/3)=x8-x1=x2-x6;
+ hthick=x11-x8; x4=lft x8; x5=rt x11;
+ x12=0.25[x1,x8]; bot y1=0; y1=y2=y12;
+ y3=y4=y5=y6=good.y 0.5h; y8=0.75h; y11=0.25h;
+ x9=x6+hround 0.05u; x9=0.25[x10,x11];
+ top y9=top y10=h;
+ tmp_path:=z8 up_to_right z9...z10;
+ tmpp_path:=z11 down_to_left z12---z1;
+ draw tmp_path; draw tmpp_path;
+ hbbowl(z9,z8,(x8,y11),x11-x8) tmp_path;
+ hbbowl(z12,z11,(x11,y8),x11-x8) tmpp_path;
+ square_end10(right); pickup square.nib;
+ draw z1..z2; draw z3..z4; draw z5..z6;
+ labels(1,2,3,4,5,6,7,8,9,10,11,12);
+endchar;
+
+iff known bbcent:
+use_rule1;
+beginchar(bbcent,7u#+2appr#,x_height#+0.5desc_depth#,0.5desc_depth#);
+ "The cent sign";
+ italcorr x_height#*slant-.5u#;
+ pickup circle.nib;
+ x1=x5=w-apprr; lft x3=apprl-ho;
+ top y2=x_height+uo; bot y4=-oo; y3=0.5[y4,y2];
+ y1=0.707[y3,y2]; y5=0.707[y3,y4];
+ tmp_path:=reverse elliptic_arc(3,2,1)&elliptic_arc(3,4,5);
+ x6=x7=good.x(x2+eps); bot y6=-d; top y7=h;
+ draw tmp_path; bbbowl(z2,z3,z4,hThick) tmp_path;
+ square_end1(z1-z1');
+ square_end5(z5-z5');
+ pickup square.nib; draw z6..z7;
+ labels(1,1',2,3,4,5,5',6,7);
+endchar;
+
+iff known bbyen:
+use_rule2;
+beginchar(bbyen,12u#+2appr#,cap_height#,0); "The Yen sign";
+ italcorr cap_height#*slant-0.5u#;
+% copy of roman Y
+ center_bar(3,4); bot y3=bot y4=-d;
+ x3l=apprl+hround(0.5(w-apprr-apprl-hthick-thin*(1++slant)));
+ x4l-x3l=hround(hthick+thin*(1++slant));
+ x3r-x3l=x4l-x4r=thin*(1++slant);
+ y4l=y3l=-d; y3r-y3l=y4r-y4l=thin;
+ y1=y6=y7r=h; x1=apprl; x7r=w-apprr;
+ x2=x3; y2=y5a=0.4h; x6-x1=x5a-x2=diag_width(thick,z1-z2);
+ a:=diag_width(thin,z1-z2);
+ penpos1(a,0); penpos6(a,180); z8=z5;
+ forsuffixes $=,r,l: x5$=x4$; z5$-z6$=whatever*(z2-z1); endfor
+ forsuffixes $=r,l: x2$=x3$; z2$-z1$=whatever*(z2-z1); endfor
+ y1-y1a=y6-y6a=thin; z1a=whatever[z1,z2]; z6a=whatever[z6,z5a];
+ adjust_slanted_bar(7r,8,7,8a)(0.5thin,-1); z7-z7l=z7r-z7;
+ ortho_penpos8(thin,z7-z8);
+ penstroke z1e--z2e--z3e--z4e--z5e--z6e;
+ fill z1--z6--z6a--z1a--cycle; penstroke z7e..z8e;
+ penlabels(1,2,3,4,5,6,7,8,9,10); labels(1a,5a,6a,8a);
+% bars
+ lft x11=lft x15=apprl+hround 0.8u;
+ rt x14=rt x18=w-apprr-hround 0.8u;
+ y11=h-y15=good.y 0.6h; y11=y12=y13=y14; y15=y16=y17=y18;
+ x16=x3; if y5>y17: x17=x4 else: z17=whatever[z5,z6] fi;
+ z12=whatever[z1,z2]; z13=whatever[z5,z6];
+ draw z11..z12; draw z13..z14; draw z15..z16; draw z17..z18;
+ square_end14(right); square_end18(right);
+ square_end11(left);square_end15(left);
+ labels(11,12,13,14,15,16,17,18);
+endchar;
+
+% The next symbol is supposed to be associated
+% to the israelian currency: the shereq
+iff known bbshereq:
+use_rule2;
+beginchar(bbshereq,16u#+2appr#,cap_height#,0);
+ "The shereq sign";
+ italcorr cap_height#*slant-.5u#;
+ pickup circle.nib;
+ top y1=h; bot y2=0; y1=y4=y5=y15; y2=y3=y9=y12=y13;
+ top y10=top y11=vround 0.8h; y7=y1-y10;
+ y6=0.3[y1,y2]; y14-y13=y5-y6;
+ lft x3=lft x4=apprl; rt x14=rt x15=w-apprr;
+ x1=x2=x3+hthick; x6=x7; x9=x10; x11=x12=x9-hthick;
+ x11-x3=x15-x7=hround((x15-x3-4hthick)/3)+hthick;
+ x5=0.5[x1,x7]; x13=0.5[x9,x15];
+ tmp_path:=z4..z5 right_to_down z6..z7;
+ tmpp_path:=z12..z13 right_to_up z14..z15;
+ draw tmp_path; draw tmpp_path;
+ hbbowl(z5,z6,z7,hthick) tmp_path; z8=z.bowl.bot;
+ hbbowl(z13,z14,z15,hthick) tmpp_path;
+ pickup square.nib;
+ draw z1--z2--z3--z4; draw z9--z10--z11--z12;
+ draw z7..z8; draw z15..z.bowl.bot;
+ labels(range 1 thru 18);
+endchar;
+
+% funny things
+
+iff known bbestimated:
+use_rule2;
+beginchar(bbestimated,13u#+2appr#,cap_height#,0);
+ "The Estimated sign (large e)";
+ italcorr 0.6cap_height#*slant-.5u#;
+ numeric t; pickup circle.nib;
+ rt x1=w-apprr; lft x3=apprl; x2=x4=0.5[x1,x3];
+ top y2=h+o; bot y4=-o; y1=y3=good.y(0.5[y2,y4]);
+ tmp_path:=superellipse(z1,z2,z3,z4,superness);
+ t=xpart(tmp_path intersectiontimes
+ (bot(w/2,0.25[y4,y2])..bot(w,0.25[y4,y2])));
+ draw subpath (0,t) of tmp_path;
+ z5=point t of tmp_path;
+ bbbowl(z2,z3,z4,hThick) tmp_path;
+ z6=(x.bowl.mid,y1);
+ hbbowl(z2,z1,z1,hThick) tmp_path;
+ x6r=x6l=x6; x1r=x1; x1m=x1l=rt x1;
+ y6r=y1r=top y1; y1m=y1; y1l=y6l=bot y1;
+ fill z1l--z1m--z1r--z6r--z6l--cycle;
+ square_end5(direction t of tmp_path);
+ labels(1,1r,1l,1m,2,3,4,5,6,6l,6r);
+ math_fit(0,0);
+endchar;
+
+iff known bbbar_h:
+use_rule1;
+beginchar(bbbar_h,8u#+2appr#,asc_height#,0);
+ "The letter bar h";
+ italcorr 0.75x_height#*slant-.5u#;
+ complete_n;
+ y13=y14=y15=y16=good.y 0.5[bot h,bot x_height];
+ lft x13=apprl-hround u; x14=lft x1; x15=rt x2;
+ rt x16-lft x13=hround(3.8u+thin+hthick);
+ draw z13..z14; draw z15..z16; labels(13,14,15,16);
+endchar;
+
+iff known bbcross_h:
+use_rule1;
+beginchar(bbcross_h,8u#+2appr#,asc_height#,0);
+ "The letter crossed h";
+ italcorr 0.75x_height#*slant-.5u#;
+ complete_n;
+ y13r=x_height; y16r=h; x13r=apprl-hround u;
+ x16r-x13r=hround(3.8u+thin+hthick);
+ ortho_penpos13(thin,z13r-z16r); ortho_penpos16(thin,z13r-z16r);
+ x14r=x14l=x1; x15r=x15l=x2;
+ z14r=whatever[z13r,z16r]; z14l=whatever[z13l,z16l];
+ z15r=whatever[z13r,z16r]; z15l=whatever[z13l,z16l];
+ penstroke z13e..z14e; penstroke z15e..z16e;
+ penlabels(13,14,15,16);
+endchar;
+
diff --git a/fonts/mbboard/source/mbbx10.mf b/fonts/mbboard/source/mbbx10.mf
new file mode 100644
index 0000000000..fb7ed0dbc1
--- /dev/null
+++ b/fonts/mbboard/source/mbbx10.mf
@@ -0,0 +1,23 @@
+% blackboard typefaces by Anthony Phan.
+% file: mbb10.mf (parameters' file for 10 points fonts)
+% last modification: 25.10.2001.
+
+if unknown mbbbase: input mbbbase fi
+
+font_identifier:="mbb"; font_size 10pt#;
+
+slant:=0;
+%math_fitting:=true;
+square_dots:=true;
+straight_bowl:=true;
+variant_a:=false; variant_f:=false;
+variant_g:=false; variant_y:=false;
+old_digits:=false; square_hebrew:=true;
+ab_up_factor:=0; ab_down_factor:=0;
+hmn_factor:=0; uy_factor:=0;
+
+input mbbxbold;
+input mbbdrivr;
+
+
+
diff --git a/fonts/mbboard/source/mbbx12.mf b/fonts/mbboard/source/mbbx12.mf
new file mode 100644
index 0000000000..105cd39734
--- /dev/null
+++ b/fonts/mbboard/source/mbbx12.mf
@@ -0,0 +1,23 @@
+% blackboard typefaces by Anthony Phan.
+% file: mbb12.mf (parameters' file for 12 points fonts)
+% last modification: 25.10.2001.
+
+if unknown mbbbase: input mbbbase fi
+
+font_identifier:="mbb"; font_size 12pt#;
+
+slant:=0;
+square_dots:=true;
+variant_a:=false; variant_f:=false;
+variant_g:=false; variant_y:=false;
+square_hebrew:=true;
+ab_up_factor:=0; ab_down_factor:=0;
+hmn_factor:=0; uy_factor:=0;
+
+input mbbxbold;
+input mbbdrivr;
+
+
+
+
+
diff --git a/fonts/mbboard/source/mbbx17.mf b/fonts/mbboard/source/mbbx17.mf
new file mode 100644
index 0000000000..6b6571f77a
--- /dev/null
+++ b/fonts/mbboard/source/mbbx17.mf
@@ -0,0 +1,23 @@
+% blackboard typefaces by Anthony Phan.
+% file: mbb17.mf (parameters' file for 17 points fonts)
+% last modification: 25.10.2001.
+
+if unknown mbbbase: input mbbbase fi
+
+font_identifier:="mbb"; font_size 17pt#;
+
+slant:=0;
+%math_fitting:=true;
+square_dots:=true;
+straight_bowl:=true;
+variant_a:=false; variant_f:=false;
+variant_g:=false; variant_y:=false;
+old_digits:=false; square_hebrew:=true;
+ab_up_factor:=0; ab_down_factor:=0;
+hmn_factor:=0; uy_factor:=0;
+
+input mbbxbold;
+input mbbdrivr;
+
+
+
diff --git a/fonts/mbboard/source/mbbx5.mf b/fonts/mbboard/source/mbbx5.mf
new file mode 100644
index 0000000000..626fdecc2e
--- /dev/null
+++ b/fonts/mbboard/source/mbbx5.mf
@@ -0,0 +1,18 @@
+% blackboard typefaces by Anthony Phan.
+% file: mbb5.mf (parameters' file for 5 points fonts)
+% last modification: 25.10.2001.
+
+if unknown mbbbase: input mbbbase fi
+
+font_identifier:="mbb"; font_size 5pt#;
+
+slant:=0;
+square_dots:=true;
+variant_a:=false; variant_f:=false;
+variant_g:=false; variant_y:=false;
+old_digits:=false; square_hebrew:=true;
+ab_up_factor:=0; ab_down_factor:=0;
+hmn_factor:=0; uy_factor:=0;
+
+input mbbxbold;
+input mbbdrivr; \ No newline at end of file
diff --git a/fonts/mbboard/source/mbbx6.mf b/fonts/mbboard/source/mbbx6.mf
new file mode 100644
index 0000000000..bf4276634f
--- /dev/null
+++ b/fonts/mbboard/source/mbbx6.mf
@@ -0,0 +1,20 @@
+% blackboard typefaces by Anthony Phan.
+% file: mbb6.mf (parameters' file for 6 points fonts)
+% last modification: 25.10.2001.
+
+if unknown mbbbase: input mbbbase fi
+
+font_identifier:="mbb"; font_size 6pt#;
+
+slant:=0;
+square_dots:=true;
+variant_a:=false; variant_f:=false;
+variant_g:=false; variant_y:=false;
+old_digits:=false; square_hebrew:=true;
+ab_up_factor:=0; ab_down_factor:=0;
+hmn_factor:=0; uy_factor:=0;
+
+input mbbxbold;
+input mbbdrivr;
+
+
diff --git a/fonts/mbboard/source/mbbx7.mf b/fonts/mbboard/source/mbbx7.mf
new file mode 100644
index 0000000000..a601f1a9f1
--- /dev/null
+++ b/fonts/mbboard/source/mbbx7.mf
@@ -0,0 +1,20 @@
+% blackboard typefaces by Anthony Phan.
+% file: mbb8.mf (parameters' file for 7 points fonts)
+% last modification: 25.10.2001.
+
+if unknown mbbbase: input mbbbase fi
+
+font_identifier:="mbb"; font_size 7pt#;
+
+slant:=0; % tilt ratio $(\Delta x/\Delta y)$
+square_dots:=true; % should dots be square?
+variant_a:=false; variant_f:=false;
+variant_g:=false; variant_y:=false;
+old_digits:=false; square_hebrew:=true;
+ab_up_factor:=0; ab_down_factor:=0;
+hmn_factor:=0; uy_factor:=0;
+
+input mbbxbold;
+input mbbdrivr;
+
+
diff --git a/fonts/mbboard/source/mbbx8.mf b/fonts/mbboard/source/mbbx8.mf
new file mode 100644
index 0000000000..869ae38181
--- /dev/null
+++ b/fonts/mbboard/source/mbbx8.mf
@@ -0,0 +1,19 @@
+% blackboard typefaces by Anthony Phan.
+% file: mbb8.mf (parameters' file for 8 points fonts)
+% last modification: 25.10.2001.
+
+if unknown mbbbase: input mbbbase fi
+
+font_identifier:="mbb"; font_size 8pt#;
+
+slant:=0;
+square_dots:=true;
+variant_a:=false; variant_f:=false;
+variant_g:=false; variant_y:=false;
+old_digits:=false; square_hebrew:=true;
+ab_up_factor:=0; ab_down_factor:=0;
+hmn_factor:=0; uy_factor:=0;
+
+input mbbxbold;
+input mbbdrivr;
+
diff --git a/fonts/mbboard/source/mbbx9.mf b/fonts/mbboard/source/mbbx9.mf
new file mode 100644
index 0000000000..0db1a3c4a8
--- /dev/null
+++ b/fonts/mbboard/source/mbbx9.mf
@@ -0,0 +1,18 @@
+% blackboard typefaces by Anthony Phan.
+% file: mbb9.mf (parameters' file for 9 points fonts)
+% last modification: 25.10.2001.
+
+if unknown mbbbase: input mbbbase fi
+
+font_identifier:="mbb"; font_size 9pt#;
+
+slant:=0;
+square_dots:=true;
+variant_a:=false; variant_f:=false;
+variant_g:=false; variant_y:=false;
+old_digits:=false; square_hebrew:=true;
+ab_up_factor:=0; ab_down_factor:=0;
+hmn_factor:=0; uy_factor:=0;
+
+input mbbxbold;
+input mbbdrivr;
diff --git a/fonts/mbboard/source/mbbxbold.mf b/fonts/mbboard/source/mbbxbold.mf
new file mode 100644
index 0000000000..1efc4c0332
--- /dev/null
+++ b/fonts/mbboard/source/mbbxbold.mf
@@ -0,0 +1,70 @@
+% blackboard typefaces by Anthony Phan.
+% file: mbbxbold.mf (parameters' file for all bold extended fonts)
+% last modification: 25.10.2001.
+
+numeric gen_; gen_=0;
+for $=17pt#,12pt#,10pt#,9pt#,8pt#,7pt#,6pt#,5pt#:
+ if designsize<$: gen_:=gen_+1; fi
+endfor;
+
+vardef gen(expr unit)(text t)=
+ save a,b; a=0; for $=t:
+ if gen_>=a: b:=$; fi
+ a:=a+1; endfor; b*unit
+enddef;
+
+dh#:=0.6designsize;
+superness:=(12/256)[sqrt 0.5,1];
+superbowl:=(30/256)[sqrt 0.5,1];
+math_spread:=gen(1)(0.4,0.5,0.7,0.9,1.1,1.3,1.5);
+
+%
+% Specific parameters
+%
+
+thin1# :=1.50*gen(1/36pt#)(18,14,12,11.5,11,10.5,10,9.5);
+
+thick1# :=1.2*gen(1/36pt#)(43.5*(37.3/23),43.5*(27/23),43.5,0.8[30,43.5],
+ 0.6[30,43.5],0.4[30,43.5],0.2[30,43.5],0.0[30,43.5]);
+
+Thick1# :=1.2*gen(1/36pt#)(47.25*(37.3/23),43.5*(27/23),47.25,0.8[33.5,47.25],
+ 0.6[33.5,47.25],0.4[33.5,47.25],0.2[33.5,47.25],0.0[33.5,47.25]);
+
+thin2# :=1.50*gen(1/36pt#)(18,14,12,11.5,11,10.5,10,9.5);
+
+thick2# :=1.2*gen(1/36pt#)(44.75*(37.3/23),43.5*(27/23),44.75,0.8[31,44.75],
+ 0.6[31,44.75],0.4[31,44.75],0.2[31,44.75],0.0[31,44.75]);
+
+Thick2# :=1.2*gen(1/36pt#)(48.75*(37.3/23),43.5*(27/23),48.75,0.8[34.5,48.75],
+ 0.6[34.5,48.75],0.4[34.5,48.75],0.2[34.5,48.75],0.0[34.5,48.75]);
+
+ess# :=1.2*gen(1/36pt#)(45*(37.3/23),43.5*(27/23),45,0.8[31,45],
+ 0.6[31,45],0.4[31,45],0.2[31,45],0.0[31,45]);
+
+cap_ess# :=1.2*gen(1/36pt#)(49*(37.3/23),43.5*(27/23),49,0.8[35,49],
+ 0.6[35,49],0.4[35,49],0.8[35,49],0.2[35,49],0.0[35,49]);
+
+dot_size#:=1.10*gen(1/36pt#)(66*(37.3/23),43.5*(27/23),55,49.5,
+ 44,38.5,33,27.5);
+
+%
+% Relative (to Computer Modern) parameters
+%
+
+u#:=gen(1/36pt#)( 37.3, 27, 23, 21.3, 19.6, 17.9, 16.2, 14.5);
+letter_fit#:=gen(1/36pt#)( -0.1, 0, 0, 0, 0, 1, 2, 3);
+
+body_height# :=gen(1/36pt#)(466, 324, 270, 243, 216, 189, 162, 135);
+asc_height# :=gen(1/36pt#)(432, 300, 250, 225, 200, 175, 150, 125);
+cap_height# :=gen(1/36pt#)(426.7,296.4,247,222.3,197.6,172.9, 148.2,123.5);
+fig_height# :=gen(1/36pt#)(401, 278.4, 232, 208.8, 185.6, 162.4, 139.2, 116);
+x_height# :=gen(1/36pt#)(267.5, 192, 160, 144, 128, 112, 96, 80);
+math_axis# :=gen(1/36pt#)(155.5, 108, 90, 81, 72, 63, 54, 45);
+desc_depth# :=gen(1/36pt#)(121, 84, 70, 63, 56, 49, 42, 35);
+o# :=gen(1/36pt#)(10, 9, 8, 7, 6, 5, 4.5, 4);
+ho# :=gen(1/36pt#)(10, 9, 8, 7, 6, 5, 4.5, 4);
+
+rule_thickness#:=gen(1pt#)(0.60,0.66,0.60,0.57,0.54,0.51,0.47,0.43);
+
+endinput;
+