Sat, 26 Jun 2010 22:19:55 +0200 wenzelm treat alternative newline symbols as in Isabelle/ML;
Sat, 26 Jun 2010 21:26:35 +0200 wenzelm simplified text_area_painter, with more precise treatment of visible line end;
(0) -30000 -10000 -3000 -1000 -300 -100 -30 -10 -2 +2 +10 +30 +100 +300 +1000 +3000 +10000 +30000 tip