http://www.neuro.gatech.edu/users/cwilson/cygutils/cygipc/index.html That page answers my question eloquently. Sorry. -rgm -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Bug reporting: http://cygwin.com/bugs.html Documentation: http://cygwin.com/docs.html FAQ: http://cygwin.com/faq/