digium.background

Puts the app in the background, returning the screen to its regular state (e.g., idle).

digium.foreground

Brings an app into the foreground. If this is called without any arguments, it brings the current app to the foreground.

digium.readFile

Reads the contents of a file as utf-8 and returns the contents as a string. The filename is relative to the location that is specified (this is a flat directory).

digium.resetIdleTimer

Resets the timeout that causes the phone to hide apps when there's no keyboard input for a while. This keeps the app alive and should be called periodicallly to prevent the app from being timed out. 

digium.restart

Indicates to the app to reboot itself.

digium.setLedState

This function can be used to change the state of one of the phone's LED lights.

digium.writeFile

Writes the string into a file. The filename is relative to the location that is specified (this is a flat directory).

digium.phoneModel 

This property is set to a string that represents the model of the phone (D40, D45, D50, D60, D62, D65, D70).