Garmin G1000 Pilot's Manual page 177

GPS NAVIGATION
Clearing vertical constraints:
1) Press the Direct-to Key
2) Press the MENU Key to display the Direct-to Menu.
3) Select 'Clear Vertical Constraints' (Figure 5-39). Press the ENT Key.
Figure 5-39 Clear Vertical Constraints Menu Option
Cancelling a direct-to:
1) Press the Direct-to Key.
2) Press the MENU Key to display the Direct-to Menu.
3) Press the ENT Key to cancel direct-to navigation. If a flight plan is still active, the G1000 resumes navigating
the flight plan along the closest leg of flight.
190-00498-01 Rev. A Garmin G1000 Pilot's Guide for the Cessna Nav III 5-41