[B/D] permits the construction of influence diagrams, using a graphics window, during ordinary use of the ADJUST: command. The influence diagrams drawn are as shown in [35], and follow very closely the schemata summarised in [32]. That is, nodes represent collections of quantities, and arcs drawn between two nodes represent a capacity of one to influence the other. Typically, we consider directed arcs, where the direction of influence is made explicit. By influence in this context we essentially mean the capacity of the information contained in one nodal collection to reduce uncertainty about another nodal collection. Our influence diagrams will frequently also display appropriate diagnostic information, where this is calculable.
The resolution for the UNIX and WINDOWS versions can be changed using the winxsize and winysize controls of §20.12.