Thu, 04 Oct 2007 14:42:11 +0200 wenzelm avoid gensym;
Thu, 04 Oct 2007 13:26:34 +0200 wenzelm updated Sign.add_abbrev;
Thu, 04 Oct 2007 12:32:58 +0200 paulson combinator translation
Wed, 03 Oct 2007 22:33:17 +0200 wenzelm avoid unnamed infixes;
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