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Display/List commands
Lists are displayed in the Java Console
Left click (mouse) Displays station info located on clicked location on status line
N lists info on last station clicked on
T Centers map on last station clicked on.  Map will remain centered on that station.
R Shows dead reckoned line for last station clicked on
C Draw range circles
L lists stations heard
W lists only weather station reports
B lists beacons
I lists ID reports
M lists last 25 messages
CTRL-click (mouse) centers map on clicked location ALT-click (mouse)
zooms in on clicked location
U or PGUP zooms up (wider view) D or PGDN zooms down (narrower view)
Arrow keys scrolls map