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.TH VFTOVP 1 "14 December 1993"
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.\"=====================================================================
.SH NAME
vftovp \- convert virtual font (vf) files to virtual property lists
.SH SYNOPSIS
.B vftovp
[
.BI \-charcode-format =format
]
[
.B \-verbose
]
.I vf_file_name
.I tfm_file_name
[
.I vpl_file_name
]
.\"=====================================================================
.SH DESCRIPTION
The
.B vftovp
program translates a (program-oriented) virtual font file and its
accompanying \*(TX font metric file to a (human-oriented) property list file.
Thus, the virtual font can be edited, and its exact contents can be
displayed mnemonically.  It also serves as a VF-file validating program;
if no error messages are given, the input files are correct.
.PP
The
.I vpl_file_name
must be complete; no adding of default extensions is done.
.\"=====================================================================
.SH OPTIONS
The argument
.I format
to
.B \-charcode-format
specifies how character codes are output in the PL file.  By
default, only letters and digits are output using the
.B C
integer code (i.e., in ASCII); the others are output in octal.  (Unless
the font's coding scheme starts with
.B "TeX math sy"
or
.BR "TeX math ex" ,
that is, when all are output in octal.)  If
.I format
is
.BR ascii ,
all character codes that correspond to graphic characters, besides the
left and right parentheses, are output in ASCII.  On the other hand, if
.I format
is
.BR octal ,
all character codes are output in octal.
.PP
Without the
.B \-verbose
option,
.B vftovp
operates silently.  With it, a banner and progress report are printed on
.IR stdout .
.\"=====================================================================
.SH ENVIRONMENT
.B vftovp
looks for
.I vf_file_name
using the
environment variable VFFONTS.  If that is not set, it uses the variable
TEXFONTS.  If that is not set, it uses the system default:
.br
.I @DEFAULT_VF_PATH@
.PP
See
.BR tex (1)
for the details of the searching.
.\"=====================================================================
.SH "SEE ALSO"
.BR pltotf (1),
.BR tftopl (1),
.BR vptovf (1).
.\"=====================================================================
.SH AUTHORS
Donald E. Knuth wrote the program, based in part on an idea of David Fuchs,
starting with the code for
.BR tftopl (1).
Karl Berry adapted it for compilation with
.BR web2c .

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