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Turning on the trackball
cd /sys/class/leds/jogball-backlightecho 7 > brightnessecho 5 > periodecho 255 0 255 > color
Turning off the trackball
echo 0 > brightness
This article discusses the new Delphi 8 property access specifiers.
Continued discussion of undocumented Delphi 8 Property Access Specifiers, and other ways of adding and removing delegates / events handlers, including clearing the list of all the delegates / event handlers.