# Range Specs

Range Specs... provides you with a listing of all model variables, and their most recent min/max global scales. The Range Specs... dialog is shown in Figure 3-26. Within it, you can set the scale of model variables.

Figure 3-26 Range Specs Dialog

Note that variables may also be scaled from within the Define Graph dialog. Chapter 6 of this book describes the mechanics of scaling variables within a Define Graph dialog.

Model variables are initially assigned a default scale from zero to one. Once a simulation has been conducted, each variable will take on its actual min and max as its scale (unless you've already set its scale). These values appear in the scrollable list.

Setting the scale for one or more variables is easy. First, select the variable(s) in the "Variable" list. Then, type in the min and max values that you would like to have applied. Finally, click the "Set" button. A circle will appear around the arrows, to the left of each variable you have scaled. The scales you set in Range Specs are global, and will be used for plotting and animation purposes, until you change or remove them. To remove the scale that's been set for one or more variables, simply select the variable(s) in the "Variable" list. Then click on the "De-Set" button.