# Appendix C
Reading Numerical Values Directly from Model Elements

Purpose: When constructing a model, especially during de-bugging, it's often useful to be able to determine the numerical value taken on by a given variable at a particular point in time. The "hover and discover" feature enables you to do this. By "hovering" over any model variable while a simulation is paused or stopped, you will be able to see the numerical value of the variable at that point in time. Additionally, a small graph will be displayed for any variable that has been loaded into a table or graph.

Basic Operations: To activate this feature, choose "Model Prefs..." under the Model menu on the Map/Model level. When the dialog appears, check the "Hover to Show Numerical Values" box as shown in Figure 4-45. OK the dialog. Whenever you pause a simulation, you will then be able to hover over any model variable to display its current numerical value.

Helpful Hint: To display a graph on hover for all model variables, check the Analyze Mode check box in the Run Specs dialog.

Figure 4-45 The "Hover & Discover" Feature