Wed, 13 May 1998 12:23:28 +0200 wenzelm added thms_closure: theory -> xstring -> tthm list option;
Wed, 13 May 1998 12:21:45 +0200 wenzelm adapted to new Scan.fail_with / Scan.!!;
Wed, 13 May 1998 12:20:53 +0200 wenzelm pure_nonterms;
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