用户仍然还可以通过单击和拖动来选择菜单项。
在现代图形用户界面中，这些原语包括指向、单击和拖动。
In modern GUIs, these primitives consist of pointing, clicking, and dragging.
及某菜单中的所有选项都处于激活状态，就像你在单击和拖动一样。
When in this mode, all the top-level menus in the program and all the items on those menus are active, just as though you were clicking and dragging.
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