Save and use in-process ^gr3^ graph
---------------------------------

		^gr3save^   filename [^, replace^]

		^gr3use^    filename [^, clear^]


(This explanation assumes you are familiar with ^gr3^, so see ^help gr3^ first if
this is not so.)

^gr3save^ saves an in-process graph.  The full filename will be filename^.3d^.

^gr3use^ restores an in-process graph, letting you continue just as if you had
never interrupted your previous session.