Tue, 19 Nov 2024 10:11:17 +0100 wenzelm unused;
Mon, 18 Nov 2024 16:48:11 +0100 wenzelm tuned output: formatting is pointless for proportional font;
Mon, 18 Nov 2024 15:05:31 +0100 wenzelm clarified Tree_View.init_model: more uniform;
Mon, 18 Nov 2024 14:47:17 +0100 wenzelm more robust update;
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