SUBSTITUTE-TERM-VAR : WFFOP

SUBSTITUTE-TERM-VAR is a wff operation.
Substitute a term for the free occurrences of variable in a gwff.
 
The calling scheme for SUBSTITUTE-TERM-VAR is:

(SUBSTITUTE-TERM-VAR TERM VAR INWFF)
"GWFF" "GVAR" "GWFF"


The result is of type GWFF.

The arguments have the following meaning:
TERM : term
VAR : var
INWFF : inwff

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