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 (update this).
../afm/Makefile in the dvips sources (look at this for examples).
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.