[boost] Documentation: Automatic redirection. How?

In the doc/html directory there are some stub files for docs. Can anyone please tell me about their intended use? When is this documentation being built? Which branch? Also it happened that: http://www.boost.org/regression-logs/cs-win32_metacomm/doc/html/threads.html does not work. My explorer ends up in some infinite attempts to constantly reload this page because the content is also a stub reloading itself ??? I am lost... Roland