Durra: A Task Description Language User’s Manual (Version 2) DoubledayDennis L. BarbacciMario R. 1992 This document describes the use of Durra, a task-level application description language, and its associated toolset. The Durra environment supports the development of highly reconfigurable distributed ADA applications. The intended audience for this document is system managers responsible for Durra installation and Durra application developers.