[SixClub] Garman GPS 40 Grid Squares

[Earl]

Sorry if this has been covered before but we just had a talk about  vhs/uhf 
and up contesting and rovering where we where shown how a Garmin GPS will 
display grid square info. The instruction manual for my GPS 40 is to vague 
about it. Can someone tell me how to get the grid square to display. I'm 
sure it's in one of the menus but can't find it.
Thanks and 73,
 Earl, K5UJC EM20cv