Binary package “ghostscript-doc” in ubuntu-rtm 14.09
interpreter for the PostScript language and for PDF - Documentation
GPL Ghostscript is used for PostScript/PDF preview and printing.
Usually as a back-end to a program such as ghostview, it can display
PostScript and PDF documents in an X11 environment.
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This package contains documentation for GPL Ghostscript, mainly
targeted developers and advanced users.