Mon, 24 Mar 2014 17:42:16 +0100 wenzelm merged
Mon, 24 Mar 2014 16:19:24 +0100 wenzelm proper Sign.full_name to get internal name (like Sign.add_consts);
Mon, 24 Mar 2014 16:06:55 +0100 wenzelm formal check of user input, avoiding direct references of interal names;
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