#cairo_ps_level_t is used to describe the language level of the PostScript Language Reference that a generated PostScript file will conform to.
The language level 2 of the PostScript specification. (Since 1.6)
The language level 3 of the PostScript specification. (Since 1.6)
#cairo_ps_level_t is used to describe the language level of the PostScript Language Reference that a generated PostScript file will conform to.