按此键可以显示光标选中项目的上下文的菜单和该对象的属性，也就是可以显示项目的快捷菜单。

Click here to show the cursor keys to select the menu item of the context and the object attributes, that is, to display the shortcut menu item.

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GUI程序通过命令来控制，这些命令可以通过菜单、上下文菜单、工具栏或者快捷键来启动。

GUI applications are controlled with commands. These commands can be launched from a menu, a context menu, a toolbar or with a shortcut.

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GUI程序通过命令来控制，这些命令可以通过菜单、上下文菜单、工具栏或者快捷键来启动。

GUI applications are controlled with commands. These commands can be launched from a menu, a context menu, a toolbar or with a shortcut.

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