Fri, 08 Jan 2021 14:40:04 +0100 wenzelm support more command positions, analogous to Command.core_range in Isabelle/Scala;
Fri, 08 Jan 2021 14:29:58 +0100 wenzelm tuned;
(0) -30000 -10000 -3000 -1000 -300 -100 -30 -10 -2 +2 +10 +30 +100 +300 +1000 +3000 tip