path: root/fonts/mbboard/source/mbbromup.mf

% 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;