      *  The default anchor target is the container itself.
      *
      *  In layouts with advanced constraints, the anchor target can be a constraint row.
-     *  Then the content area is the space between the preceeding row
+     *  Then the content area is the space between the preceding row
      *  (or container side) and the target row.
      *
      *  Setting the property to a number or to a numerical string like "10"

     *  Returns the x coordinate of the element's bounds at the specified element size.
     * 
     *  This method is typically used by layouts during measure() to predict what
     *  the element position will be, if the element is resized to particular dimesions.
     * 
     *  @param width The element's bounds width, or NaN to use the preferred width.
     *  @param height The element's bounds height, or NaN to use the preferred height.

     *  The horizontal distance in pixels from the left edge of the component to the
     *  anchor target's left edge.
     *
     *  By default the anchor target is the container's content area. In layouts
     *  with advanced constraints, the target can be a constraint column.
     *
     *  Setting the property to a number or to a numerical string like "10"
     *  specifies use of the default anchor target.
     *
     *  To specify an anchor target, set the property value to a string in the format
     *  "anchorTargetName:value" e.g. "col1:10".
     *
     *  @default null
