code: function (elm, rel) {
          if (typeof rel != 'string') {
            rel = this.testMoveRel(elm, rel);
          }
  
          var pos = calculateRelativePosition(this, elm, rel);
          return this.moveTo(pos.x, pos.y);
        }
docs: Move relative to the specified element.
  
  @method moveRel
  @param {Element} elm Element to move relative to.
  @param {String} rel Relative mode. For example: br-tl.
  @return {tinymce.ui.Control} Current control instance.