nl_tokens: Creates a constructor that has nothing extra in its scope chain .
pl_tokens: function makeCtor ( className ) { function constructor ( ) { // Opera has some problems returning from a constructor when Dragonfly isn't running. The || null seems to // be sufficient to stop it misbehaving. Known to be required against 10.53, 11.51 and 11.61. return this . constructor . <mask> ( this , arguments ) || null ; } //<debug> if ( className ) { constructor . displayName = className ; } //</debug> return constructor ; }