SIMPLIFY-UP* : WFFOPSIMPLIFY-UP* is a wff operation.
Unapply all active rewrite rules
A --> B, and apply all active rewrite rules B <--> A in the backward
direction. (i.e. subformulas A are rewritten to B, modulo any functions
attached to the rules, so that the original gwff will be a rewrite
instance of the resulting gwff.)
The calling scheme for SIMPLIFY-UP* is:
The result is of type GWFF.
The arguments have the following meaning:
GWFF : gwff after rewriting
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