WFF-COMMUTATIVE* : WFFOP

WFF-COMMUTATIVE* is a wff operation.
Recursively 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:

(WFF-COMMUTATIVE* GWFF)
"GWFF"


The result is of type GWFF.

The arguments have the following meaning:
GWFF : Wff

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