% Copyright 1993 Gilles F. Robert.
% You may freely use, modify and/or distribute this file.
% This statement added 2008/11/14 by Clea F. Rees on the basis of the email exchange archived at http://lists.debian.org/debian-tex-maint/2008/05/msg00040.html.
%
% Computer Modern Blackboard Typewriter for use with 9 point
% Was cmtt9; modified for blackboard letter
% Gilles F. ROBERT (29-03-93)
if unknown blbbase: input blbbase fi

font_identifier:="CMBBTT"; font_size 9pt#;

u#:=18.9/36pt#;      % unit width
width_adj#:=0pt#;    % width adjustment for certain characters
serif_fit#:=0pt#;    % extra sidebar near lowercase serifs
cap_serif_fit#:=0pt#;    % extra sidebar near uppercase serifs
letter_fit#:=0pt#;    % extra space added to all sidebars

body_height#:=225/36pt#;  % height of tallest characters
asc_height#:=198/36pt#;    % height of lowercase ascenders
cap_height#:=198/36pt#;    % height of caps
fig_height#:=198/36pt#;    % height of numerals
x_height#:=139.5/36pt#;    % height of lowercase without ascenders
math_axis#:=99/36pt#;    % axis of symmetry for math symbols
bar_height#:=71/36pt#;    % height of crossbar in lowercase e
comma_depth#:=45/36pt#;    % depth of comma below baseline
desc_depth#:=72/36pt#;    % depth of lowercase descenders

crisp#:=10.5/36pt#;    % diameter of serif corners % was 21/36pt# GFR
tiny#:=10.5/36pt#;    % diameter of rounded corners % was 21/36pt# GFR
fine#:=10/36pt#;    % diameter of sharply rounded corners % was 20/36pt# GFR
thin_join#:=12/36pt#;    % width of extrafine details % was 20/36pt# GFR
hair#:=24/36pt#;    % lowercase hairline breadth
stem#:=24/36pt#;    % lowercase stem breadth
curve#:=24/36pt#;    % lowercase curve breadth
ess#:=21/36pt#;      % breadth in middle of lowercase s
flare#:=30/36pt#;    % diameter of bulbs or breadth of terminals
dot_size#:=33/36pt#;    % diameter of dots
cap_hair#:=24/36pt#;    % uppercase hairline breadth
cap_stem#:=24/36pt#;    % uppercase stem breadth
cap_curve#:=24/36pt#;    % uppercase curve breadth
cap_ess#:=24/36pt#;    % breadth in middle of uppercase s
rule_thickness#:=24/36pt#;  % thickness of lines in math symbols

dish#:=0pt#;      % amount erased at top or bottom of serifs
bracket#:=0pt#;      % vertical distance from serif base to tangent
jut#:=31/36pt#;      % protrusion of lowercase serifs
cap_jut#:=31/36pt#;    % protrusion of uppercase serifs
beak_jut#:=0pt#;    % horizontal protrusion of beak serifs
beak#:=31/36pt#;    % vertical protrusion of beak serifs
vair#:=21/36pt#;    % vertical diameter of hairlines
notch_cut#:=24/36pt#;    % maximum breadth above or below notches
bar#:=21/36pt#;      % lowercase bar thickness
slab#:=21/36pt#;    % serif and arm thickness
cap_bar#:=21/36pt#;    % uppercase bar thickness
cap_band#:=21/36pt#;    % uppercase thickness above/below lobes
cap_notch_cut#:=24/36pt#;  % max breadth above/below uppercase notches
serif_drop#:=0pt#;    % vertical drop of sloped serifs
stem_corr#:=0pt#;    % for small refinements of stem breadth
vair_corr#:=0pt#;    % for small refinements of hairline height
apex_corr#:=9/36pt#;    % extra width at diagonal junctions

o#:=3.5/36pt#;      % amount of overshoot for curves
apex_o#:=3/36pt#;    % amount of overshoot for diagonal junctions

slant:=0;      % tilt ratio $(\Delta x/\Delta y)$
fudge:=0.81;      % factor applied to weights of heavy characters
math_spread:=-1;    % extra openness of math symbols
superness:=1/sqrt2;    % parameter for superellipses
superpull:=0;      % extra openness inside bowls
beak_darkness:=0;    % fraction of triangle inside beak serifs
ligs:=0;      % level of ligatures to be included

square_dots:=false;    % should dots be square?
hefty:=true;      % should we try hard not to be overweight?
serifs:=true;      % should serifs and bulbs be attached?
monospace:=true;    % should all characters have the same width?
variant_g:=false;    % should an italic-style g be used?
low_asterisk:=true;    % should the asterisk be centered at the axis?
math_fitting:=false;    % should math-mode spacing be used?

interspace#:=31/36pt#;    % space between the doubled bars
cap_interspace#:=31/36pt#;    % same for uppercase letters

generate blbord      % switch to the driver file

