Loads a font for later use. Before text is output with a loaded
font it must be set with PS_setfont(3). This function needs the adobe
font metric file in order to calculate the space used up by the
characters. A font which is loaded within a page will only be available
on that page. Fonts which are to be used in the complete document
has to be loaded before the first call of PS_begin_page(3). Calling
PS_findfont(3) between pages will make that font available for all
PS_findfont will try to load the file passed in the parameter
encoding. Encoding files are of the same
syntax as those used by dvips(1). They contain
a font encoding vector (which is currently not used but must be present)
and a list of extra ligatures to extend the
list of ligatures derived from the afm file.
encoding can be NULL or the empty string
if the default encoding (TeXBase1) schall be used.
If the encoding is set to builtin then there will be no
reencoding and the font specific encoding will be used. This is
very useful with symbol fonts.
All files will first be searched in the current directory and
than in the directories set by the parameter SearchPath.