prolog:meta_goal(+Goal, -Pattern)[multifile, '/home/swipl/src/swipl-devel/build/home/library/prolog_xref.pl']
Define meta-predicates. See the examples in this file for details.
 prolog:meta_goal(+Goal, -Pattern)[multifile, library(prolog_xref)]
Define meta-predicates. See the examples in this file for details.