subc, option.lisp, and other fun stuff



OK, I'm confused.  I have been attempting to make plotting work in its
own package, as a first step towards compartmentalizing Maxima.  I
tried, as a first step, to export $paramplot from the plotting package
to maxima-user package, only to find it was defined elsewhere in
Maxima.  Unless sys-proclaim.lisp somehow defines it, the only other
logical candidate I see is the code in option.lisp, which I don't
understand.  What purpose does the subc code serve?  Would I want the
stuff relevant to plotting to be in the plotting package?  

Any help appreciated.

Cheers,
CY

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