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66 GPSMAP 188/188C Sounder Owner’s Manual
MAIN MENU > MAP TAB
Points Sub Tab
The Spot Soundings, Tide Stations, and Services options each
contain adjustments for text and zoom.
• Text—None (except Spot Soundings), Small, Medium, and
Large: controls the screen size of the name.
• Zoom—Auto, Off, 120 ft-800 mi: sets the maximum range
features should appear on the Map Page. Some types of data
only are visible to specific zoom ranges.
Navaids Sub Tab
• Symbol Set—Auto, Garmin, NOAA, International: controls
a navaid symbol set.
• Text Size—Small, Medium, and Large: controls the screen
size of the name.
• Light Sectors—Off, Auto, On: controls the drawing light
sectors on the map.