NAME

       tfmtodit - create font files for use with groff -Tdvi

SYNOPSIS

       tfmtodit [-s] [-g gf_file] [-k skewchar] tfm_file map_file font

       tfmtodit --help

       tfmtodit -v
       tfmtodit --version

DESCRIPTION

       tfmtodit  creates a font file for use with groff -Tdvi.  tfm_file is the name of the TeX font metric file
       for the font.  map_file is a file giving the groff names for characters in the  font;  this  file  should
       consist of a sequence of lines of the form:

              n c1 c2 ...

       where  n  is  a decimal integer giving the position of the character in the font, and c1, c2,...  are the
       groff names of the character.  If a character has no groff names but exists in the tfm file, then it will
       be  put  in  the  groff font file as an unnamed character.  font is the name of the groff font file.  The
       groff font file is written to font.

       The -s option should be given if the font is special (a  font  is  special  if  troff  should  search  it
       whenever  a  character is not found in the current font.)  If the font is special, it should be listed in
       the fonts command in the DESC file; if it is not special, there is no need to list it,  since  troff  can
       automatically mount it when it's first used.

       To do a good job of math typesetting, groff requires font metric information not present in the tfm file.
       The reason for this is that TeX has separate math italic fonts whereas groff uses normal italic fonts for
       math.   The  additional information required by groff is given by the two arguments to the math_fit macro
       in the Metafont programs for the Computer Modern fonts.  In a text font (a font for which math_fitting is
       false),  Metafont  normally ignores these two arguments.  Metafont can be made to put this information in
       the gf file by loading the following definition after cmbase when creating cm.base:

              def ignore_math_fit(expr left_adjustment,right_adjustment) =
                  special "adjustment";
                  numspecial left_adjustment*16/designsize;
                  numspecial right_adjustment*16/designsize;
                  enddef;

       For the EC font family, load the following definition after exbase  (it  is  probably  easiest  to  patch
       exbase.mf locally):

              def ignore_math_fit(expr left_adjustment,right_adjustment) =
                  ori_special "adjustment";
                  ori_numspecial left_adjustment*16/designsize;
                  ori_numspecial right_adjustment*16/designsize;
                  enddef;

       The gf file created using this modified cm.base or exbase should be specified with the -g option.  The -g
       option should not be given for a font for which math_fitting is true.

OPTIONS

       Whitespace is permitted between a command-line option and its argument.

       -v     Print the version number.

       -s     The font is special.  The effect of this option is to add the special command to the font file.

       -kn    The skewchar of this font is at position n.  n should be an integer; it may be given  in  decimal,
              or  with  a leading 0 in octal, or with a leading 0x in hexadecimal.  The effect of this option is
              to ignore any kerns whose second component is the specified character.

       -ggf_file
              gf_file is a gf file produced by  Metafont  containing  special  and  numspecial  commands  giving
              additional font metric information.

FILES

       /usr/share/groff/1.22.4/font/devdvi/DESC
              Device description file.

       /usr/share/groff/1.22.4/font/devdvi/F
              Font description file for font F.

SEE ALSO

       groff(1), grodvi(1), groff_font(5)