[. . . ] [. . . ] Logitech assumes no responsibility for any errors that may appear in this manual. English 1 F-keys User-friendly enhanced F-keys let you easily launch applications or control your music. To use the enhanced functions (orange icons), press the FN key and the F-Key you want to use simultaneously. Tip In the software settings, you can invert the FN mode if you prefer to access directly the enhanced functions without having to press the FN key. [. . . ] [. . . ]