4 ms·
Old versions of PDF allowed to embed arbitrary PostScript for some area of the page, but this was always specified not to have any effect except if the PDF gets
by zauguin 5y ago
Old versions of PDF allowed to embed arbitrary PostScript for some area of the page, but this was always specified not to have any effect except if the PDF gets converted to PostScript. Especially it was specified to be ignored by PDF viewers and non PostScript printers, making it rather useless. In current PDF versions, this is no longer allowed.