Dividing a display screen into distinct areas in which different display imagescan be viewed at the same time; for example, in order to simultaneously display different parts of a spreadsheet.

• 将显示屏分为多个独立区域，使用户可以在一个显示屏上同时察看多个显示映象。例如，同时显示一张电子数据表的不同部分。