PGPLOT Module: PGSAVE -- save PGPLOT attributes


This routine saves the current PGPLOT attributes in a private storage
area. They can be restored by calling PGUNSA (unsave). Attributes
saved are: character font, character height, color index, fill-area
style, line style, line width, pen position, arrow-head style,
hatching style, and clipping state. Color representation is not saved.

Calls to PGSAVE and PGUNSA should always be paired. Up to 20 copies
of the attributes may be saved. PGUNSA always retrieves the last-saved
values (last-in first-out stack).

Note that when multiple devices are in use, PGUNSA retrieves the
values saved by the last PGSAVE call, even if they were for a
different device.

Arguments none