nl_tokens: Whether the given point is not away from this point within the given threshold amount .
pl_tokens: function ( point , threshold ) { if ( typeof threshold == 'number' ) { threshold = { x : threshold } ; threshold . y = threshold . x ; } var x = <mask> . x , y = point . y , thresholdX = threshold . x , thresholdY = threshold . y ; return ( this . x <= x + thresholdX && this . x >= x - thresholdX && this . y <= y + thresholdY && this . y >= y - thresholdY ) ; }