Set the PostScript level.
[read/write property] level([out, retval] int *level) level([in] int level)
This property sets the PostScript level to one of the following: Those three constants are all read-only properties on the XpdfPS object, so they are accessed as pdf.level2, etc.

This setting is global, i.e., it affects all XpdfPS objects (in the same process).

' generate Level 3 PostScript files pdf.level = pdf.level3