[Boost-users] mutex types and interprocess documentation question

Boost documention has following code in the paragraph "Scoped lock" (reference to the paragraph is here.../html/interprocess/synchronization_mechanisms.html#interprocess.synchron ization_mechanisms.mutexes) using namespace boost::interprocess; //Let's create any mutex type: MutexType mutex; ... I did not find a reference to available types declarations. Paragraph above "Scoped lock" talks about mutex types, but I did not find type declarations. My question is: where are available types declared? I will also appreciate the example of such declaration that shows what #include should be used.