1. A languaGE supporting concurrency through {messaGE passing} to named messaGE queues from {ParaSoft} Corporation . 2. Data definition languaGE, meant to become an ISO standard for product data representation and exchanGE. TC 184/SC4 N83, ISO, 1991-05-31. E-mail: . 3. A data modelling languaGE adopted by the ISO working group on STEP.