Thu, 02 May 2013 12:49:15 +0100 eliminated explicit swap_lemmas
Christian Urban <christian dot urban at kcl dot ac dot uk> [Thu, 02 May 2013 12:49:15 +0100] rev 247
eliminated explicit swap_lemmas
(0) -100 -30 -10 -1 +1 +10 +30 tip