ETACONTR : WFFOP

ETACONTR is a wff operation.
Reduces [lambda x.fx] to f at top.
 
The calling scheme for ETACONTR is:

(ETACONTR GWFF)
"GWFF"


The result is of type GWFF.

The arguments have the following meaning:
GWFF : Wff to be eta-contracted.

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