1. Extended programming In LOGic. prOLOG with several AND' s having different time constraints. ["Epilog: A Language for Extended programming in Logic", A. Porto in Implementations of prolog, J.A. Campbell ed, Ellis Horwood 1984]. 2. A data-drivenprOLOG, with both AND parallelism and OR parallelism. ["EPILOG = prOLOG + Data Flow", M.J. Wise, SIGPLAN Noices 17:80-86 (1982)].