Light indelible

A light that does not turn itself off.
- The light does not turn off automatically.

The light turns on automatically after startup.
The light is switched off by one of the following actions
*Turn off the switch.
*Exit the application by pressing the back key.
*The application is terminated by task kill, memory shortage, etc.

The light does not turn off in the following actions, but remains on.
*Return to Home (press the Home key)
*Sleep mode (press the power key)
*Launching another application (by pressing the task key)