Wood, C.A.Gray, P.D.Kilgour, A.C.2014-10-212014-10-2119881467-8659https://doi.org/10.1111/j.1467-8659.1988.tb00597.xThis paper describes the design, implementation and initial evaluation of a graphical dialogue specification language and its interpreter. Features of the system include a hierarchical dialogue structure with the capability to export options to lower levels of the hierarchy, the use of a restricted form of production rule approach to option selection in each unit of the dialogue, and suspended time editing (allowing modification of the dialogue specification during execution without loss of context).10.1111/j.1467-8659.1988.tb00597.x117-127