Function Keys
Function keys, or F keys (e.g., F1, F2, F3, F4), have various gage functions and may
change depending on the display screen. View the bottom of the display screen for the
function that corresponds with the appropriate F key. For example, F1 may correspond
with the Save function, F2 with the Freeze function, or F3 with the Directory function
(Dir). Many times the left or right arrow keys can be used instead of the MENU/OK key
to highlight a parameter or to see what is under the selected choice.