Did you know ... Search Documentation:
Predicate prolog_open_source/2
 prolog_open_source(+CanonicalId:atomic, -Stream:stream) is det
Open source with given canonical id (see prolog_canonical_source/2) and remove the #! line if any. Streams opened using this predicate must be closed using prolog_close_source/1. Typically using the skeleton below. Using this skeleton, operator and style-check options are automatically restored to the values before opening the source. 
process_source(Src) :-
        prolog_open_source(Src, In),
        call_cleanup(process(Src), prolog_close_source(In)).
Tags are associated to your profile if you are logged in
Tags: