Wed, 23 Jul 2014 18:04:16 +0200 wenzelm another attempt at more aggressive auto-loading (amending af28fdd50690) -- hidden buffers are now suppressed;
Wed, 23 Jul 2014 16:56:03 +0200 wenzelm more frugal edits;
Wed, 23 Jul 2014 16:20:07 +0200 wenzelm more explicit treatment of cleared nodes (removal is implicit);
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