INSTANTIATE-TOP-EQUALITY : WFFOP

INSTANTIATE-TOP-EQUALITY is a wff operation.
Instantiate outermost equality in gwff. Consults the flag
REWRITE-EQUALITIES (but ignores it if it's set to NONE).
 
The calling scheme for INSTANTIATE-TOP-EQUALITY is:

(INSTANTIATE-TOP-EQUALITY INWFF)
"GWFF"


The result is of type GWFF.

The arguments have the following meaning:
INWFF : inwff

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