Vrije Universiteit, Amsterdam, 1986. Similar to Modula-2, but with support for distributed programming using shared data objects, like Linda. A ' graph' data type removes the need for pointers. Version for the Amoeba OS, comes with Amoeba. "Orca: A Language for Distributed Processing", H.E. BAL <BAL@cs.vu.nl> et al, SIGPLAN Notices 25(5):17-24 (May 1990).