Adds the font with id fallback onto the font with id base for characters that are not found in base's character set. May be called multiple times, up to an internal maximum count per font. Group: text_api
true if successful, false if not
See Implementation
Adds the font with id fallback onto the font with id base for characters that are not found in base's character set. May be called multiple times, up to an internal maximum count per font. Group: text_api