4.13.4 Predicate Summary

?X ^ :P

there exists an X such that P is provable (used in setof/3 and bagof/3)

bagof(?X,:P,-B) ISO

B is the bag of instances of X such that P is provable

findall(?T,:G,-L) ISO

findall(?T,:G,?L,?R)

L is the list of all solutions T for the goal G, concatenated with R or with the empty list

setof(?X,:P,-S) ISO

S is the set of instances of X such that P is provable