When in a Template

Tab 
Move forward to next box/button/field
Shift+Tab 
Move backwards to last box /button/field
Arrows 
Move up or down a field list
Space Bar
Select current box/button/field
Alt+O
Ok
Alt+C 
Cancel
Alt+S 
Suspend

                   
                   

When in SystmOne main screen

F1 Help
F2 Favourites
F6 Save Patient
F8 Home Screen
F10 Search for Patient
F12 Launcher
Ctrl+F6 Discard Patient