WFF-COMMUTATIVE : WFFOPWFF-COMMUTATIVE is a wff operation.
Apply commutativity laws to a formula:
A and B --> B and A
A or B --> B or A
A implies B --> not B implies not A
A equiv B --> B equiv A.
The calling scheme for WFF-COMMUTATIVE is:
The result is of type GWFF.
The arguments have the following meaning:
GWFF : Wff
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