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Or a simpler idea: a poker tracker add on that can do more advanced filtering, sort of a query front end, like: "show me all hands where I put in the last agression on the flop and checked behind the turn". I think this can be done currently with pokertracker, but would require direct manipulation of the database on the back end, wheras I'm thinking of a more user-friendly tool.
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PGC does this (
http://www.pokergrader.com/, click on link in green box). It has a very powerful hand filters and is entirely open source.