Sun, 20 Mar 2011 20:05:43 +0100 wenzelm parallel preparation of document variants, within separate directories;
Sun, 20 Mar 2011 19:47:26 +0100 wenzelm Present.init/finish/no_document are not thread-safe -- eliminated futile CRITICAL sections;
Sun, 20 Mar 2011 19:34:18 +0100 wenzelm eliminated redundant doc_prefix1;
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