produces the exact same output as

This function is guaranteed to return a color index for a requested color, either the exact color or the closest possible alternative.

Loads a character encoding vector from from a file and changes the fonts encoding vector to it. As a PostScript fonts default vector lacks most of the character positions above 127, you'll definitely want to change this if you use an other language than english. The exact format of this file is described in T1libs documentation. T1lib comes with two ready to use files, IsoLatin1.enc and IsoLatin2.enc.