The modulation works like an on/off toggle switch.
Auto-on/off headlights
(Obsolete)Turns on/off the selection margin.
A long press on the END/POWER key turns on/off the phone.
WiFi on/off button and Power on/off button to save energy while not in use
I can't get the lid on/off.
press the on/off switch
I can't get the lid on/off.
Select/clear the checkbox to turn a visualization on/off.
(Obsolete)Turns on/off multi-line text in a control.