    paper.pageToLocalPoint(p)

Transform the point `p` defined in the page coordinate system to the local coordinate system.

    paper.on('blank:pointerup', function(evt) {
      var pagePoint = g.Point(evt.pageX, evt.pageY);
      var localPoint1 = this.pageToLocalPoint(pagePoint);
      // alternative method signature
      var localPoint2 = this.pageToLocalPoint(evt.pageX, evt.pageY);
      // Move the element to the point, where the user just clicks.
      element.position(localPoint1.x, localPoint1.y);
    });