% this is a single-line comment /* this is a block comment */ :- object(class, implements(protocol), imports(category), instantiates(metaclass), specializes(superclass)). :- info([ version is 1.0, author is 'Paulo Moura', date is 2003/12/18, comment is 'Sample class for testing syntax coloring.']). :- dynamic. :- calls(some_other_protocol). :- uses(another_object). :- end_object.