Mon, 12 Feb 2001 20:44:02 +0100 wenzelm \<subseteq> syntax for classes/classrel/axclass/instance;
Mon, 12 Feb 2001 20:43:12 +0100 wenzelm \<subseteq>;
Sun, 11 Feb 2001 20:38:40 +0100 wenzelm added "xsymbols" syntax for "=?=";
Sun, 11 Feb 2001 16:34:20 +0100 wenzelm more robust selection of calculational rules;
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