You use names to identify columns and other controls in filters, PowerScript functions, and DataWindow expression functions.
The DataWindow painter automatically generates names for all controls in a DataWindow object. To name columns, labels, and headings, the DataWindow painter uses database and extended attribute information. To name all other controls, it uses a system of prefixes. You can control the prefixes used for automatic name generation, and you can specify the name of any control explicitly.
To specify prefixes for naming controls systematically in a DataWindow object:
Select Design>Options from the menu bar and then select the Prefixes tab.
Change prefixes as desired and click OK.
To specify a name of a control in a DataWindow object:
Select Properties from the control's pop-up menu and then select the General tab in the Properties view.
Type the name in the Name box.