Mon, 26 Nov 2012 11:45:12 +0100 blanchet distinguish declated tfrees from other tfrees -- only the later can be optimized away
Mon, 26 Nov 2012 16:28:22 +0100 wenzelm clarified status of Legacy_XML_Syntax, despite lack of Proofterm_XML;
Mon, 26 Nov 2012 16:22:29 +0100 wenzelm reset active areas on content update;
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