Raymarine e7 User Reference page 69

Cross Track Error (XTE)
Cross Track Error (XTE) is the amount of deviation from your
intended route or waypoint, expressed as a distance.
In the event that you steer off-track, you can go straight to your
target by resetting XTE.
Resetting Cross Track Error (XTE)
While following a route in the chart application:
1. Select the route.
The route context menu is displayed.
2. Select Restart XTE.
Resetting XTE results in a new course from the current vessel
position to the current target waypoint. This does not affect your
saved route.
Using waypoints, routes and tracks
XTE
You can also reset the XTE from the Navigate Menu: Menu >
Navigate > Restart XTE.
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Waypoint information
When you create a waypoint, the system assigns information
regarding the location marked. You can view and edit the details of
any waypoint that has been created and stored.
The following information is assigned or captured for each waypoint:
• Name
• Position (as Lat/Lon and range/bearing from vessel.)
• Temperature (requires appropriate sensor, only for waypoints
captured at the vessel position.)
• Depth (requires appropriate sensor, only for waypoints captured
at the vessel position.)
• Date and time
• Comment (you can add your own text comments to a waypoint.)
• Symbol (a default symbol is assigned, or you can select an
alternative.)
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