6.2-4 Compensating for Different Screen Sizes and Shapes

If a cursor motion is used to transfer input control between the large- and individual-view display devices of different size and shape, then features should be incorporated to make their spatial relationships clear to the user.

Additional Information:
Guideline 2.3.4-2 indicates that the cursor should jump between uniquely designated locations on each screen if the screens are not located adjacent to each other. This may be accomplished by designating a "home" or entry point on each screen. It may also be accomplished by having the smaller screen overlap with a designated portion of the larger screen (e.g., the top portion of the smaller screen may be indicated as corresponding to part of the lower section of the larger screen). Computational techniques for cursor motion, may also be used to correct for differences in the number of pixels (display elements) of the different screen sizes. For example, the upper left and right corners of the smaller display would correspond to the lower left and right corners of the larger display, respectively. When using this approach, a single movement of the cursor controller (e.g., mouse) would result in greater cursor movement on the larger screen than on the smaller screen.