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如何使用 Fn 键/F Lock 键/备用命令键? - Microsoft 支持
许多键可以与 Fn 键或 F Lock 键配合使用来提供两组命令。. 这包括顶行的标准功能键 (F1–F12)。. 标准命令(如 F3)标在键的正面。. 备用命令(例如“恢复”)标在键的顶部。. 在某些程序中,标准命令和替代命令的功能可能相同(例如,F1 通常显示活动窗口的 ...
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