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GFTODVI(1)		    General Commands Manual		    GFTODVI(1)

       gftodvi - make proof sheets from	generic	font files

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

       This  manual page is not	meant to be exhaustive.	 The complete documen-
       tation 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

       To  change  the	default	 fonts,	 you can give special commands in your
       Metafont	source file, or	you can	change the fonts online. An online di-
       alog 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
       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  ex-
       tension	added.	For  example, the input	file cmr10.2602gf would	become

       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 de-
       fault is	a little over two inches.

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

       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.

	      The default fonts.

	      The Metafont sources.

       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.

       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.

Web2C 2015			 20 April 2007			    GFTODVI(1)


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