This figure shows the Expression Builder dialog. The Expression Builder dialog contains four areas, starting with the Expression area which contains Driver.age. Next is a tab group that contains the following tabs: Globals, Functions, Operators, and Constants. The Globals tab is selected and contains the option Driver expanded to show variables: age, has_training, eye_test, eligible, and LicenseType. The age variable is selected. Next is the Content Preview pane which contains Driver.age and the Description pane which contains SDK Variable Option. Between the Expression area and tab group is a Insert Into Expression button. Above the Expression area are the following icons: Undo, Redo, and Clear.