Garmin GPSMAP 168 Sounder Owner's Manual And Reference Manual page 39

Reference
Map Page Options
General Tab
Source Tab
Points Tab
Line Tab
Geo Tab
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General Tab
Detail— Most, More, Normal, Less, Least: controls how much map detail you will see. This setting
only applies to any map feature set to "Auto". Those features which have a specifi ed scale or turned
"Off" are unaffected by this setting.
Orientation— North Up— fi xes the top of the map display to a north heading; Track Up— fi xes the
top of the map display to the current track heading; Course Up— fi xes the map so the direction of
navigation is always "up" and turns the navigation leg line vertical on the screen.
AutoZoom— On/Off: when "On" the map will automatically adjust the map scale to a lower scale
as you approach you destination point.
Source Tab
Basemap— On/Off: turns the built in base map on or off.
MapSource— On/Off: turns the optional MapSource data loaded in the unit on or off.
Points Tab— Waypoints, Active Route, and Marine Navaids
Text— None, Small, Medium, and Large: controls the screen size of the name.
Zoom— Auto, Off, 120 ft.-800 mi.: sets the maximum scale at which the feature should appear on
the screen. Some types of data will only show up to certain zoom scales.
Line Tab
Saved Tracks/Track Log/Active Route— Auto, Off, 120 ft.-800 mi: sets the maximum scale at which
the feature should appear on the screen.
Lat/Lon Grid— Text— Medium, None; Zoom—Auto, Off, 120 ft.-800 mi.: sets the maximum scale
at which the feature should appear on the screen.
Geo Tab— Geo Points, Rivers/Lakes, Park Areas
Text— None, Small, Medium, and Large: controls the screen size of the name.
Zoom— Auto, Off, 120 ft.-800 mi.: sets the maximum scale at which the feature should appear on
the screen. Some types of data will only show up to certain zoom scales.