/basic_context.hpp/1.4/Sun Dec 24 08:35:04 2006//
/context.hpp/1.1/Wed Jun 14 22:26:30 2006//
/context_base.hpp/1.2/Sat Nov  4 07:14:08 2006//
/context_service.hpp/1.5/Thu Jan  4 03:41:06 2007//
/stream.hpp/1.3/Sun Dec 24 08:35:04 2006//
/stream_base.hpp/1.1/Wed Jun 14 22:26:30 2006//
/stream_service.hpp/1.4/Thu Jan  4 03:41:06 2007//
D
