This is the current revision of this page, as edited by David Eppstein (talk | contribs) at 00:36, 19 June 2023 (Undid revision 1160819472 by Izno (talk) Was informative before, now it is just a duplicate of what might be a category. Readers cannot determine how these classes are related by a bare listing of their names.). The present address (URL) is a permanent link to this version.