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.

SEE ALSO

       tex(1), mf(1).
       Donald  E.  Knuth,  The  Metafontbook (Volume C of Computers and Typesetting), Addison-Wesley, 1986, ISBN
       0-201-13445-4.
       Donald E. Knuth et al., Metafontware.

AUTHORS

       Donald E. Knuth wrote and still maintains the program. It was  published  as  part  of  the  Metafontware
       technical  report.  Paul  Richards  originally ported it to Unix.  Bug reports should go to tex-k@tug.org
       (https://lists.tug.org/tex-k).

Web2C 2023                                        4 March 2021                                        GFTODVI(1)