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Main Menu.
The Main Menu commands and their functions are:
Screen: changes the contrast or brightness of the display screen.
Sounds: enables or disables the sounds for key strokes and alarms and
sets the alarm style.
Transparency: adjusts the level of transparency for menus.
Alarms: turns GPS or sonar alarms on or off and changes alarm
thresholds.
Route Planning: used to plan, view or navigate a route.
My Trails: shows, hides, creates and deletes plot trails. Also used to
navigate or backtrack a trail.
Cancel Navigation: turns off the various navigation commands. Used
to stop navigating after you have reached your destination.
Sonar Setup: sets various sonar options.
GPS Setup: sets various GPS receiver options.
System Setup: sets general configuration options.
Sun/Moon Calculations: finds the rising and setting time of the sun
and the moon.
Trip Calculator: shows trip status and statistics.
Timers: controls the up timer, down timer and alarm clock settings.
Browse Files: this allows you to view the installed MMC card and the
files it contains.
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