SYNOPSIS
#include <pslib.h>
void PS_add_ligature(PSDoc *psdoc, int fontid, const char *glyphname1, const char *glyphname2, const char *glyphname3)
DESCRIPTION
Adds a new ligature to an already loaded font. This function was mainly provided to add ligatures to Type3 fonts created with PS_begin_font(3), but it can also be used for fonts loaded with PS_findfont(3).
PS_add_ligature has been introduced in version 0.4.0 of pslib.