Version 2.0 53Waypoint Operator’s Manual9. Then press the E function key to end editing.You can press the E key when you finish editing a waypoint. Thisis treated the same as pressing the Done softkey. Pressing Doneallows you to continue editing and entering other waypoints.Waypoint Lock/UnlockLocking a waypoint forces the user to consciously unlock the waypointbefore it can be modified and prevents the waypoint from being over-written when waypoints are being input over the data port. Note thatwhen a waypoint received on the data port has the same waypointnumber as a locked waypoint already stored in the CDU, the waypointdata received on the data port is disregarded and lost. Waypoints arelocked by one of three methods: 1) selecting Lock this WPT when inthe waypoint bank edit mode for a particular waypoint; 2) selectingLock this WPT when in the waypoint bank edit mode; or 3) incorporat-ing a waypoint into a route stored in RTE2 and then locking the route.Waypoints that are locked from the waypoint bank are indicated by aclosed padlock in the display. Waypoints that are party to a lockedroute will display a message indicating that waypoint can not be modi-fied.To Lock a Waypoint1. Select the WPT key until the WPT1 screen is displayed.2. Move the cursor to the desired waypoint.3. Press the E key.