SWI-Prolog Did You Know Did you know? SWI-Prolog tabling provides Well Founded Semantics Search Documentation:
Pack logtalk -- logtalk-3.90.1/tools/packs/test_files/local_1_d/sig_pack.lgt

The current version of pack logtalk does not contain a file logtalk-3.90.1/tools/packs/test_files/local_1_d/sig_pack.lgt