Sun, 05 May 2019 11:54:53 +0200 František Kučera remove debug messages v_0
Sun, 05 May 2019 11:51:45 +0200 František Kučera generate (some) relational output v_0
Sun, 05 May 2019 01:08:24 +0200 František Kučera for each attribute v_0
(0) -3 +3 +10 +30 tip