Sat, 15 Mar 2008 18:08:02 +0100 wenzelm Environment of named facts (admits overriding). Optional indexing by proposition.
(0) -10000 -3000 -1000 -300 -100 -30 -10 -1 +1 +10 +30 +100 +300 +1000 +3000 +10000 +30000 tip