🚀 go-pugleaf

Two recent notes from Xerox about Interpress subsets remind me that it
was in March 1985 that Xerox first announced Interpress; here it is
March 1987, and there is still no implementation of the full language on
the market. And the subsets that ARE on the market appear to be so
confusing that even Xerox can't keep straight what the various subsets
do. Quoting from two recent "explanatory" messages:

    The 9700, 8700, and 4050 all support the Commercial Set of Interpress.
    If you wish to use features of the Publication or Professional Graphics
    Sets, you can attach a Front End Printing Service (FEPS), which converts
    full Interpress to the Commercial Set by converting SOME of the document
    to bitmap.  But most documents can be generated by Commercial
    Interpress.  You need the FEPS to handle arbitrary rotations (90 degree
    rotations can be handled by Commercial Interpress), non-horizontal and
    non-vertical lines, curves, and colors.
    
    Cheryl
    
    --------------------------------
    
    Comments on FEPS: This software was developped to have STAR documents be
    printed on a commercial set printer. STAR documents fit in the
    Publication set with some differences. For example, the curves are
    implemented as straight segments. STAR  does not implement "CURVETO,
    CONICTO, ARCTO".
    Arbitrary rotations are part of the Professionnal Graphic set but not of
    the Publication set ( '5.2.2). FEPS would not understand them.

    Danielle