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#1 degree in rads is pi divided by 180 = .01745 
$mw->bind('<Left>',sub{ &rotate(.01745) });
...
$mw->bind('<Up>',sub{ &power(10) });
$mw->bind('<Down>',sub{ &power(-10) });
$mw->bind('<space>', sub{ &fire}  );

#1 degree in rads is pi divided by 180 = .01745 
my ($kleft, $kright, $kup, $kdown);
...
$mw->bind('<Down>',sub{ $kdown ||= $mw->repeat(50, sub { &power(-10) }
+) });
$mw->bind('<KeyRelease-Down>',sub{ $kdown->cancel; undef $kdown });
$mw->bind('<space>', sub{ &fire}  );

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