WFF-PERMUTE* : WFFOP

WFF-PERMUTE* is a wff operation.
Recursively permute the two components of an infix operator:
A op B --> B op A
 
The calling scheme for WFF-PERMUTE* is:

(WFF-PERMUTE* GWFF)
"GWFF"


The result is of type GWFF.

The arguments have the following meaning:
GWFF : Wff

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