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Set & Table hierarchy

Date: Thu, 9 Nov 89 10:43:27 PST
   From: ravi (Ravi Pandya)

   Some minor afterthoughts:

   All mutables should implement a copy() message.

I take it the following equation should hold:

MuTable * p;

p->copy() === p->asImmuTable()->asMuTable()

?

   NullSet is a subclass of ScruSet.

I don't get this?  Why ScruSet?