This function allows the user to display a portion of the model for more detailed viewing. Once a desired region is selected, the program will set this region as the active window and only display the analysis result for a portion of the model. Other portions of the model will be masked and inactive.

The user can define the Active Window by options of Cursor, Window, Polygon, and Freehand, or use Undo, Redo, and Clear Active Window to reset the active window, as shown in Figure 5.5.1. After the definition, click Exit to quit the Define Active Window.

Figure 5.5.1  Define Active Window Control Window

Click CLEAR ACTIVE WINDOW from the TOOL menu to remove the defined active window. The program will display the whole model.