Tue, 13 Sep 2005 22:19:48 +0200 added three_buffersN, print3;
wenzelm [Tue, 13 Sep 2005 22:19:48 +0200] rev 17363
added three_buffersN, print3; tuned theory_to_proof: plain Proof.state instead of history; added EXCEPTION; removed DATA_FAIL, TRANSLATION_FAIL;
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