NOT-FREE-IN : WFFOP

NOT-FREE-IN is a wff operation.
Tests whether a variable is not free in a wff.
 
The calling scheme for NOT-FREE-IN is:

(NOT-FREE-IN GVAR INWFF)
"GVAR" "GWFF"


The result is of type BOOLEAN.

The arguments have the following meaning:
GVAR : Variable
INWFF : Inwff

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