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GOTO A single leg route with the present position being the start
of the route and a defined waypoint as the destination. (If
the unit has been moved while turned off and has not yet
acquired a new position fix, the start of the GOTO will be
the position fix last recorded.)
Heading The direction in which the receiver is moving, track or
ground course, (due to wind, current, and so forth), and
may also be different from the course.
LAT/LON Coordinate system using latitude and longitude coordi-
nates to define a position on the earth.
Latitude The angular distance north or south of the equator
measured by lines encircling the earth parallel to the
equator in degrees from 0° to 90°.
Last Fix Position coordinates computed and stored automatically
every 10 minutes in the Last Fix Buffer.
Last Fix Buffer The list of the most recent last fixes automatically stored by
the receiver. (Up to 21 may be stored at one time.)
Leg (Route) A segment of a route that has a starting (FROM) waypoint
and a destination (TO) waypoint. A route may consist of 1
or more legs. For a route that is from waypoint A to
waypoint B, waypoint B to waypoint C, and waypoint
point C to waypoint D has three legs with the first leg
being from waypoint A to waypoint B.
Longitude The angular distance east or west of the prime meridian
(Greenwich meridian) as measured by lines perpendicular
to the parallels and converging at the poles from 0° to
180°.
Magnetic The direction toward the north magnetic pole from the
North observer’s position.
OSGB A coordinate system describing only Great Britain, similar
to UTMs. Generally used with GBR36 datum, which also
describes only Great Britain. This coordinate system cannot
be used in any other part of the world. The Meridian XL
automatically selects the GBR36 datum when the OSGB
coordinate system is selected in Setup. (While OSGB
coordinates must be used with the GBR36 datum, the
GBR36 datum can be used with LAT/LON coordinates; just
be sure the map you are using uses both LAT/LON and
GBR36.)