Figure 4

The interface the inputs, states and outputs in model #1. There are three facts (bottom left), ten contexts (up), three medications (bottom left two), twelve states (bottom right two) and five outputs (bottom right). User-designer can add or delete inputs, states, outputs or outcomes. For a selected variable, the user-designer is able to set the range (min and max), add/delete membership functions, define the membership functions, and see the graphics of the membership functions. If the variable is a state, the user-designer also has access to the reference, time constant, the negative feedback (on/off), and all of the control parameters.