Some functions are only available using the Function Keys. These can be mapped by going to the Settings tab, and then the Function Keys tab near the bottom of the screen. A number of different functions are available. The default mapping is F1 = for context sensitive help F2 = show previous consultation F3 = pop search ( quick search for patient ) F4 = show last prescription written F5 = popup screen to record vital signs You can change these around if you wish. More functions will become available in due course.