Garmin GPSMAP 3205 Owner's Manual page 96

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Zoom
Zoom allows you to zoom in on a selected area of the radar screen. When you
select a zoom range, a window showing a zoomed portion of the screen appears
in the lower-left corner and a selection box appears. To view different areas at the
selected zoom range, open the Radar adjustment menu, and then press the Move
soft key. Use the ROCKER to move the selection box. The Zoom setting has
four settings: Off, 2x, 4x, and Move.
Zoom vew
Target Expansion
Use Target Expansion to increase the size of targets. Select On or Off.
NOTE: The Target Expansion setting has no effect at range scales of 4 nm or
greater.

Selecton box
Target Expansion Off
Trails
Trails allows you to select whether all returns on the screen leave a history trail,
and allows you to determine the length of the history trail (Off, Short, Medium,
or long). You can also Clear the trails.
Trails On
Target Expansion On
Trails Off
GPSMAP 3205 Owner's Manual