nl_tokens: InputEvent
pl_tokens: function InputEvent ( device , <mask> ) { var self = this ; EventEmitter . call ( this ) ; if ( device instanceof InputEvent ) { device = device . device ; } this . device = device ; this . options = options || { flags : 'r' , encoding : null } ; this . options . fd = fs . openSync ( this . device , this . options . flags ) ; this . fd = fs . createReadStream ( null , this . options ) ; this . fd . on ( 'data' , function ( data ) { self . emit ( 'raw' , data ) ; self . process ( data ) ; } ) ; this . fd . on ( 'error' , function ( err ) { self . emit ( 'error' , err ) ; } ) ; }