Adobe had been pretty open with PostScript. From the PostScript Language Reference, 3rd Ed: > However, Adobe desires to promote the use of the PostScript lang

Adobe had been pretty open with PostScript. From the PostScript Language Reference, 3rd Ed: > However, Adobe desires to promote the use of the PostScript language for information interchange among diverse products and applications. Accordingly, Adobe gives permission to anyone to: ... Source: https://www.adobe.com/jp/print/postscript/pdfs/PLRM.pdf#page=24 https://www.adobe.com/jp/print/postscript/pdfs/PLRM.pdf#page...