RAISE Specification Language RSL <language> (RSL) (RAISE = Rigorous Approach to Industrial Software Engineering). A wide-spectrum specification and design language developed by {ESPRIT} Project 315 at {CRI} A/S, Denmark. Systems may be modular, {concurrent} and {nondeterministic}. Specifications may be {applicative} or {imperative}, explicit or implicit, abstract or concrete. ["The RAISE Specification Language", RAISE Language Group, P-H 1992, ISBN 0-13-752833-7]. (2007-10-02)