An Introduction to iTasks: Defining Interactive Work Flows for the Web

In this paper, the authors present the iTask system: a set of combinators to specify work flows in a pure functional language at a very high level of abstraction. Work flow systems are automated systems in which tasks are coordinated that have to be executed by either humans or computers. The combinators that they propose support work flow patterns commonly found in commercial work flow systems. In addition, they introduce novel work flow patterns that capture real world requirements, but that can not be dealt with by current systems.