nl_tokens: Holds the current orientation of the device if the device has an accelerometer . An instance of Accelerometer is available as {
pl_tokens: function Accelerometer ( ) { /**
     * The angle of the device rotated around the z-axis. The z-axis is the axis coming out of the device screen. alpha represents how much the devies is spun around the center of the screen.
     * @member {number}
     */ this . alpha = 0 ; /**
     * The angle of the device rotated around the x-axis. The x-axis is horizontal across the device screen. beta represents how much the device is tilted forward or backward.
     * @member {number}
     */ this . beta = 0 ; /**
     * The angle of the device rotated around the y-axis. The y-axis is vertical across the device screen. gamma represents how much the device is turned left or right.
     * @member {number}
     */ this . gamma = 0 ; var self = this ; window . addEventListener ( "deviceorientation" , function ( event ) { self . alpha = event . alpha ; self . beta = event . beta ; self . gamma = <mask> . gamma ; } , false ) ; }