Sun, 09 Apr 2017 19:56:52 +0200 wenzelm clarified main CTT.thy, and avoid name clash with global HOL/Main.thy;
Sun, 09 Apr 2017 19:03:55 +0200 wenzelm tuned signature -- prefer qualified names;
Sat, 08 Apr 2017 22:36:32 +0200 wenzelm more qualifier treatment, but in the end it is still ignored;
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