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gftodvi(1)

NAME

   gftodvi - make proof sheets from generic font files

SYNOPSIS

   gftodvi [-overflow-label-offset=real] [-verbose] gf_file_name

DESCRIPTION

   This  manual  page  is  not  meant  to  be  exhaustive.   The  complete
   documentation for this version of TeX can be found in the info file  or
   manual Web2C: A TeX implementation.

   The  gftodvi  program  converts a generic font (gf) file output by, for
   example, mf(1), to a device independent (DVI) file (that  can  then  be
   typeset using the same software that has already been written for TeX).
   The characters in the gf file will appear one per  page,  with  labels,
   titles, and annotations as specified in Appendix H (Hardcopy Proofs) of
   The Metafontbook.

   gftodvi uses other fonts in addition to the main  gf  file.   A  `gray'
   font is used to typeset the pixels that actually make up the character.
   (We wouldn't want all the pixels to be simply black, since then labels,
   key  points,  and  other information would be lost.)  A `title' font is
   used for the information at the top of the page. A `label' font is used
   for  the  labels on key points of the figure. A `slant' font is used to
   typeset diagonal lines, which otherwise  have  to  be  simulated  using
   horizontal  and  vertical  rules.   The  default gray, title, and label
   fonts are gray, cmr8, and cmtt10, respectively;  there  is  no  default
   slant font.

   To  change  the  default  fonts,  you can give special commands in your
   Metafont source file, or you can change the  fonts  online.  An  online
   dialog ensues if you end the gf_file_name with a `/'. For example,
     gftodvi cmr10.300gf/
     Special font substitution: grayfont black
     OK; any more? grayfontarea /home/art/don/
     OK; any more? slantfont /home/fonts/slantimagen6
     OK; any more? <RET>
   will    use    /home/art/don/black    as    the    `gray'    font   and
   /home/fonts/slantimagen6 as the `slant' font  (this  name  indicates  a
   font for lines with slope 1/6 at the resolution of an Imagen printer).

   The  gf_file_name  on  the  command line must be complete.  Because the
   resolution is part of the extension, it would not make sense to  append
   a  default  extension  as is done with TeX or DVI-reading software. The
   output file name uses the same root as  the  gf  file,  with  the  .dvi
   extension  added. For example, the input file cmr10.2602gf would become
   cmr10.dvi.

OPTIONS

   The argument to -overflow-label-offset specifies the distance from  the
   right  edge  of  the  character  bounding  box  at  which  the overflow
   equations (if any) are typeset.  The value is given in TeX points.  The
   default is a little over two inches.

   Without  the  -verbose  option,  gftodvi operates silently.  With it, a
   banner and progress report are printed on stdout.

ENVIRONMENT

   gftodvi looks for gf_file_name using the environment variable  GFFONTS.
   If  that is not set, it uses the variable TEXFONTS. If that is not set,
   it uses the system default.

   See tex(1) for the details of the searching.

FILES

   {gray.tfm,...}
          The default fonts.

   {gray.mf,...}
          The Metafont sources.

AUTHORS

   Donald  E.  Knuth  wrote  the  program. It was published as part of the
   Metafontware technical report, available  from  the  TeX  Users  Group.
   Paul Richards ported it to Unix.

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