> the PostScript support
What do you mean by that?
Older PDFs support PostScript XObjects: literal embedded PostScript code. Not sure it counts tho, because IIRC it was never executed by PDF viewer itself. It was "gives this to printer when printing"
Older PDFs support PostScript XObjects: literal embedded PostScript code. Not sure it counts tho, because IIRC it was never executed by PDF viewer itself. It was "gives this to printer when printing"