| 摘要 |
A computer-implemented graphical user interface for displaying a plurality of selection areas. A first selection are is displayed on a monitor attached to the computer, and then a second selection area is displayed on the monitor attached to the computer without erasing the first selection area. The first and/or second selection areas are modified to visually distinguish between the first and second selection areas, wherein the first and/or second selection areas are modified to have different colors, fills, patterns or lines. Finally, either the first or second selection area may be selected as an active selection area.
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