Kinds of Meta Information

• simple what/content pairs, e.g. Homepage: http://osstag.sourceforge.net
• single words (tags), e.g. perl, xml

→ aspect oriented tagging combines what/content pairs with tagging, e.g. encoding/perl, xml

• time-durations/time-frames/time-points, e.g: before 2006, between 050101 and 050715 or at 15-FEB-2002 03:00pm

→ should we support such tags so that everybody defines timeframes in a coherent way? → should we support any other standardized information?

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