Hello, The review version of Boost.FSM library has been updated in the Vault. The link stays the same: http://tinyurl.com/yjozfn Some major changes are: - A number of portability issues have been fixed. Now the test compiles on GCC 3.4.6 and Intel Compiler 8.1 on FreeBSD. - Some documentation improvements and additions were made. In particular, Concepts section and few examples were added. - The code from tutorial have been extracted to an example in the libs/fsm/example directory. My apologies for inconvenience. -- Best regards, Andrey mailto:andysem@mail.ru