Thu, 11 Feb 1999 15:30:10 +0100 wenzelm tuned;
Tue, 09 Feb 1999 10:47:21 +0100 paulson tidied; better error messages
Tue, 09 Feb 1999 10:45:55 +0100 paulson new lemma surjD
Mon, 08 Feb 1999 17:33:47 +0100 wenzelm Context.fetch, Context.setmp;
Mon, 08 Feb 1999 17:33:24 +0100 wenzelm "files" keyword!
Mon, 08 Feb 1999 17:33:03 +0100 wenzelm use: provide context;
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