afm2tfm - convert Adobe font metrics to TeX font metrics
PostScript fonts are (or should be) accompanied by font
metric files such as Times-Roman.afm, which describes
the characteristics of the font called Times-Roman. To use
such fonts with TeX, we need TFM files that contain similar
information. This program does that conversion. For more
information, print out the dvips manual.
psfonts.map in the config directory used by dvips
../afm/Makefile in the dvips sources (look at this for
dvips(1), tex(1), vptovf(1)
An option to add letterspacing to the virtual font was
rejected by Knuth because it would make the fi and fl
ligatures break the normal rhythmic pattern.