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isPlaneElement
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.. js:function:: Util.isPlaneElement

   .. rst-class:: sig-pretty-signature
   
      | isPlaneElement(**prop**\ : *object*\ ): *boolean*
   
   Check whether or not a Subentity is a PlaneElement.
   
   **Parameters**
   
      **prop**\ : *object*
   
         the Subentity to check.
   
   
   
   **Returns**\ : *boolean*
   
      true if the prop passed is a PlaneElement, false otherwise.
   
   




