Sun, 23 May 2021 19:59:37 +0200 wenzelm clarified index, more like formal @{element_ref};
Sun, 23 May 2021 19:29:18 +0200 wenzelm clarified treatment of type constructors;
Sun, 23 May 2021 18:04:35 +0200 wenzelm misc tuning and clarification;
(0) -30000 -10000 -3000 -1000 -300 -100 -30 -10 -3 +3 +10 +30 +100 +300 +1000 tip