Quick KeyKeyCreator \ Tools \ Options \ Quick-Key
This function allows for quickly changing the view, cplane, zoom, or viewport layout using the keyboard. This method requires fewer keystrokes than using the immediate commands, and doesn't change what is displayed on the conversation bar. It is enabled through Tools>Options>Misc.
Using the Function:
NOTE: When this function is enabled, the number keys and the valid calculator characters "@()^.+-*/%" are not available for use in keyboard assignments. The Insert, Home, End, and Delete, Backspace, Escape, and F10 keys will execute the Quick Key function when there is a non-empty input string, rather than any keyboard assignments.