CRISTAL Graphical Interface: An integrated videographic data management system such as CRISTAL can also facilitate access to information in a database by use of a visual (iconographical) interface. By using the Screen Map feature of CRISTAL, image icons and other component parts of an image can be linked to macro commands in a worksheet. When in the Screen Map mode, an image icon displayed on the graphics screen is selected by positioning the mouse controlled cursor on the icon and pressing the right mouse button. The macros in the worksheet that correspond to the icon location in the graphics screen are then executed. These macro commands activate a predefined event or sequence of events, such as: 1... displaying an image or a series of images in the graphics screen that are related to the selected graphic icon. 2... displaying a worksheet or series of text files containing construction, assembly, or task specifications, descriptive commentary, or numeric data. 3... displaying another Screen Map of image icons to provide access to another visual representation of the structure of the information base. CRISTAL: Macro Language CRISTAL: Mt. Rainier Prototype