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call(Goal, ST1, ST2)succeeds. Procedurably, the mapping for each (sub) term pair
T1/T2is defined as:
call(Goal, T1, T2)succeeds we are done. Note that the mapping does not continue in T2. If this is desired, Goal must call mapsubterms/3 explicitly as part of its conversion.
Both predicates are implemented using foldsubterms/5.