Tue, 23 Apr 1996 12:38:16 +0200 clasohm use_dir and exit_use_dir now change the CWD only temporarily
Mon, 22 Apr 1996 15:42:20 +0200 nipkow inserted Suc_less_eq explictly in a few proofs.
Fri, 19 Apr 1996 11:33:24 +0200 clasohm added Konrad's code for the datatype package
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