During the review it was decided to change the interface of the fsm submission as follows: - Library name and namespace are changed to statechart - Reactions are specified with a member typedef in the state type instead of a type that is passed as template argument A version with the above changes applied can be found in the sandbox under the statechart directories and here: http://boost-sandbox.sf.net/Statechart.zip The docs can also be browsed online: http://boost-sandbox.sf.net/libs/statechart I have not yet had the time to document the new reaction specification interface but it should be obvious how to use it from the examples and the tests. Feedback is highly welcome. Thanks & Regards, Andreas P.S. Future posts regarding this library will no longer carry the tag [fsm] but only [statechart] -- Andreas Huber When replying by private email, please remove the words spam and trap from the address shown in the header.