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% Compute the font construction parameters for the Computer
% Modern Typewriter Text family. Some other Computer Modern families
% compute their parameters as modifications of these.
u#:= % unit width
(if design_size < 10: ((design_size*design_size*1) +
(design_size*2)+90)
else: ((design_size*18.5)+25)fi)/360pt#;
width_adj#:= % width adjustment for certain characters
0pt#;
serif_fit#:= % extra sidebar near lowercase serifs
0pt#;
cap_serif_fit#:= % extra sidebar near uppercase serifs
0/360pt#;
letter_fit#:= % extra space added to all sidebars
0/360pt#;
body_height#:= % height of tallest characters
(design_size*250)/360pt#;
asc_height#:= % height of lowercase ascenders
(design_size*220)/360pt#;
cap_height#:= % height of caps
(design_size*220)/360pt#;
fig_height#:= % height of numerals
(design_size*220)/360pt#;
x_height#:= % height of lowercase without ascenders
(design_size*155)/360pt#;
math_axis#:= % axis of symmetry for math symbols
(design_size*110)/360pt#;
bar_height#:= % height of crossbar in lowercase e
((design_size*80)-10)/360pt#;
comma_depth#:= % depth of comma below baseline
(design_size*50)/360pt#;
desc_depth#:= % depth of lowercase descenders
(design_size*80)/360pt#;
crisp#:= % diameter of serif corners
(if design_size < 9: ((design_size*20)+30)
elseif design_size < 10: ((design_size*10)+120)
else: ((design_size*15)+70)fi)/360pt#;
tiny#:= % diameter of rounded corners
(if design_size < 9: ((design_size*20)+30)
elseif design_size < 10: ((design_size*10)+120)
else: ((design_size*15)+70)fi)/360pt#;
fine#:= % diameter of sharply rounded corners
(if design_size < 10: (-(design_size*design_size*5) +
(design_size*105) - 340)
else: ((design_size*5)+160)fi)/360pt#;
thin_join#:= % width of extrafine details
(if design_size < 10: (-(design_size*design_size*5) +
(design_size*105) - 340)
else: ((design_size*5)+160)fi)/360pt#;
hair#:= % lowercase hairline breadth
(if design_size < 10: (-(design_size*design_size*5) +
(design_size*105) - 300)
else: ((design_size*15)+100)fi)/360pt#;
stem#:= % lowercase stem breadth
(if design_size < 10: (-(design_size*design_size*5) +
(design_size*105) - 300)
else: ((design_size*15)+100)fi)/360pt#;
curve#:= % lowercase curve breadth
(if design_size < 10: (-(design_size*design_size*5) +
(design_size*105) - 300)
else: ((design_size*15)+100)fi)/360pt#;
ess#:= % breadth in middle of lowercase s
(if design_size < 10: (-(design_size*design_size*5) +
(design_size*105) - 330)
else: ((design_size*15)+70)fi)/360pt#;
flare#:= % diameter of bulbs or breadth of terminals
(if design_size < 10: ((design_size*20)+120)
else: ((design_size*15)+170)fi)/360pt#;
dot_size#:= % diameter of dots
(if design_size < 9: ((design_size*20)+150)
elseif design_size < 10: ((design_size*30)+60)
else: ((design_size*15)+210)fi)/360pt#;
cap_hair#:= % uppercase hairline breadth
(if design_size < 10: (-(design_size*design_size*5) +
(design_size*105) - 300)
else: ((design_size*15)+100)fi)/360pt#;
cap_stem#:= % uppercase stem breadth
(if design_size < 10: (-(design_size*design_size*5) +
(design_size*105) - 300)
else: ((design_size*15)+100)fi)/360pt#;
cap_curve#:= % uppercase curve breadth
(if design_size < 10: (-(design_size*design_size*5) +
(design_size*105) - 300)
else: ((design_size*15)+100)fi)/360pt#;
cap_ess#:= % breadth in middle of uppercase s
(if design_size < 10: (-(design_size*design_size*5) +
(design_size*105) - 300)
else: ((design_size*15)+100)fi)/360pt#;
rule_thickness#:= % thickness of lines in math symbols
(if design_size < 10: (-(design_size*design_size*5) +
(design_size*105) - 300)
else: ((design_size*15)+100)fi)/360pt#;
dish#:= % amount erased at top or bottom of serifs
0/360pt#;
bracket#:= % vertical distance from serif base to tangent
0/360pt#;
jut#:= % protrusion of lowercase serifs
(if design_size < 10: (-(design_size*design_size*5) +
(design_size*125) - 410)
else: ((design_size*25)+90)fi)/360pt#;
cap_jut#:= % protrusion of uppercase serifs
(if design_size < 10: (-(design_size*design_size*5) +
(design_size*125) - 410)
else: ((design_size*25)+90)fi)/360pt#;
beak_jut#:= % horizontal protrusion of beak serifs
0/360pt#;
beak#:= % vertical protrusion of beak serifs
(if design_size < 10: (-(design_size*design_size*05) +
(design_size*125) - 410)
else: ((design_size*25)+90)fi)/360pt#;
vair#:= % vertical diameter of hairlines
(if design_size < 10: (-(design_size*design_size*5) +
(design_size*105) - 330)
else: ((design_size*15)+70)fi)/360pt#;
notch_cut#:= % maximum breadth above or below notches
(if design_size < 10: (-(design_size*design_size*5) +
(design_size*105) - 300)
else: ((design_size*15)+100)fi)/360pt#;
bar#:= % lowercase bar thickness
(if design_size < 10: (-(design_size*design_size*5) +
(design_size*105) - 330)
else: ((design_size*15)+70)fi)/360pt#;
slab#:= % serif and arm thickness
(if design_size < 10: (-(design_size*design_size*5) +
(design_size*105) - 330)
else: ((design_size*15)+70)fi)/360pt#;
cap_bar#:= % uppercase bar thickness
(if design_size < 10: (-(design_size*design_size*5) +
(design_size*105) - 330)
else: ((design_size*15)+70)fi)/360pt#;
cap_band#:= % uppercase thickness above/below lobes
(if design_size < 10: (-(design_size*design_size*5) +
(design_size*105) - 330)
else: ((design_size*15)+70)fi)/360pt#;
cap_notch_cut#:= % max breadth above/below uppercase notches
(if design_size < 10: (-(design_size*design_size*5) +
(design_size*105) - 300)
else: ((design_size*15)+100)fi)/360pt#;
serif_drop#:= % vertical drop of sloped serifs
0/360pt#;
stem_corr#:= % for small refinements of stem breadth
0/360pt#;
vair_corr#:= % for small refinements of hairline height
0/360pt#;
apex_corr#:= % extra width at diagonal junctions
(if design_size < 10: (design_size*10)
else: ((design_size*5)+50)fi)/360pt#;
o#:= % amount of overshoot for curves
((design_size*5)-10)/360pt#;
apex_o#:= % amount of overshoot for diagonal junctions
(if design_size < 10: (30)
else: ((design_size*5)-20)fi)/360pt#;
slant:= % tilt ratio $(\Delta x/\Delta y)$
0;
fudge:= % factor applied to weights of heavy characters
(if design_size < 10: (81)
elseif design_size < 17.6: ((design_size*2.5)+56)
else: (100)fi)/100;
math_spread:= % extra openness of math symbols
-1;
superness:= % parameter for superellipses
1/sqrt2;
superpull:= % extra openness inside bowls
0;
beak_darkness:= % fraction of triangle inside beak serifs
0;
ligs:= % level of ligatures to be included
0;
square_dots:= % should dots be square?
false;
hefty:= % should we try hard not to be overweight?
true;
serifs:= % should serifs and bulbs be attached?
true;
monospace:= % should all characters have the same width?
true;
variant_g:= % should an italic-style g be used?
false;
low_asterisk:= % should the asterisk be centered at the axis?
true;
math_fitting:= % should math-mode spacing be used?
false;
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