I read some pages and I didn’t find anything about Fn shortcuts .Then enjoy :
F1 : Opens the help window ( does anyone doubt ? )
F2 : when you have a selection of Patch\Polygon sub-objects it switches the display of selected sub-objects between shaded and wireframe . try it once and you’ll get it .
F3 : switches the display of a wireframe viewport to shaded and visa versa . Really useful .
F4 : switches a simple shaded viewport to edged faced and visa versa . useful again !
F5 : chooses the X dimension for Transform operations ( Move , Rotate , Scale ) .
F6 : chooses the Y dimension for Transform operations ( Move , Rotate , Scale ) .
F7 : chooses the Z dimension for Transform operations ( Move , Rotate , Scale ) .
F8 : Switches between XY , YZ , XZ planes for transform Operations ( Move , Rotate , Scale ) .
F9 : Renders the viewport by according to the last assigned options for render dialog . Very useful .
F10 : opens the Render Dialog . very useful .
F11 : opens the MAXscript listener dialog .
F12 : opens the Type-In dialog for Transform operations ( Move , Rotate , Scale ) .
