Sun, 25 Oct 2009 19:19:41 +0100 wenzelm maintain group via name space, not tags;
Sun, 25 Oct 2009 19:19:35 +0100 wenzelm LocalTheory.naming_of;
Sun, 25 Oct 2009 19:19:29 +0100 wenzelm begin_theory: set theory_name here;
Sun, 25 Oct 2009 19:18:59 +0100 wenzelm maintain group via name space, not tags;
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