1.5-11 Display Frame Location Cues

Users viewing a portion of a larger display should be provided with an indication of the location of the visible position of a display (frame) in the overall display.

Additional Information:
A graphic indication of the frame's location in the overall display will provide a visual context to help a user maintain a conceptual orientation between the visible part and the whole display. For example, in a corner of the frame, the computer might show a rectangle representing the overall display, in which a smaller rectangle is placed to indicate the position and extent of the currently visible portion of that display. Sectional coordinates should be used when large schematics must be panned or magnified.