2010-03-13 wenzelm 2010-03-13 removed old CVS Ids; tuned headers;
2009-03-16 wenzelm 2009-03-16 simplified method setup;
2009-03-13 wenzelm 2009-03-13 unified type Proof.method and pervasive METHOD combinators;
2006-11-29 wenzelm 2006-11-29 tuned spaces/comments;
2006-11-20 wenzelm 2006-11-20 converted legacy ML scripts;
2005-09-18 wenzelm 2005-09-18 converted to Isar theory format;
1996-10-09 paulson 1996-10-09 New unified treatment of sequent calculi by Sara Kalvala combines the old LK and Modal with the new ILL (Int. Linear Logic)