dvips: Changing TeX encodings
6.3.1.1 '-t': Changing TeX encodings
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To build a virtual font with Afm2tfm, you specify the '-v' or '-V'
option. You can then specify an encoding for that virtual font with '-t
TEX-ENC'. ('-t' is ignored if neither '-v' nor '-V' is present.) Any
ligature and kerning information you specify in TEX-ENC will be used in
the VPL, in addition to the ligature and kerning information from the
AFM file.
If the AFM file has no entry for a character specified in TEX-ENC,
that character will be omitted from the output VPL.
The '-t' option is likely to be needed when you have a PostScript
font corresponding to a TeX font other than a normal text font such as
Computer Modern. For instance, if you have a PostScript font that
contains math symbols, you'd probably want to use the encoding in the
'texmsym.enc' file supplied with Dvips. (For a start; to actually get
usable math fonts, you have to define much more than just an encoding.)