NAME
          tfmtodit - create font files for use with groff -Tdvi

     SYNOPSIS
          tfmtodit [ -sv ] [ -ggf_file ] [ -kskewchar ] tfm_file
          map_file font

     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;

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

     OPTIONS
          -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/products/src2/gcc/AIX.d/lib/groff/font/devdvi/DESC
               Device description file.

          /usr/products/src2/gcc/AIX.d/lib/groff/font/devdvi/F
               Font description file for font F.

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