# Adding the CheckBox

On a Page, a CheckBox is used to enable/disable different controls. In this example, a CheckBox is being used to enable/disable the display of an interactive rectangular region.

1. On the Page, from the Toolbox, drag and drop a CheckBox onto the Page.
2. In the Text property, enter the text "Show Rectangle."
3. The script will later call Checked and Unchecked script points to check and uncheck the CheckBox.