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gftodvi(1)                                                          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 documenta-
       tion 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 hor-
       izontal  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/slan-
       timagen6 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 res-
       olution 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 out-
       put file name uses the same root as the gf file, with the  .dvi  exten-
       sion  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 equa-
       tions (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 ban-
       ner 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  Typeset-
       ting), 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 2021                       4 March 2021                       gftodvi(1)

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