Wed, 10 Nov 2010 15:59:23 +0100 wenzelm manage folding via sidekick by default;
Wed, 10 Nov 2010 15:47:56 +0100 wenzelm eliminated obsolete heading category -- superseded by heading_level;
Wed, 10 Nov 2010 15:43:06 +0100 wenzelm treat main theory commands like headings, and nest anything else inside;
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