•  The Database Spy window is a debugging tool that allows you to monitor and force values to project tags; execute and test functions; and execute and test math expressions. The window contains the following elements:
•  For each item that you want to monitor during runtime:

       Tag/Expression: Specify a project tag, system tag, or expression that           you want to monitor.

       Value: Displays the value returned by the tag/expression.

       Quality: Displays the quality (GOOD or BAD) of the value returned by     the tag/expression.

       Continuous: Select this option to have the project continuously        evaluate the tag/expression.

•  DB tabs: The windows is divided into multiple sheets, so that you can keep           your items organized.
•  Scroll bars: Use to view areas of the Database Spy that are obscured from view because of the window size or the size of the current sheet.