OpenBridge Modeler – Help ProStructures ProStructures CommonModifying Model Elements Modifying Model Elements Move and Copy Partsthe ProSteel copy and move commands offer you additional help beyond CAD?copy and move controls by offering the option of limiting the direction of the move. Apart from that, you can specifically take the group structure into consideration..Stretch Model Elements using a FenceTo linearly stretch a portion of your model using a fence, use the following procedure. 3D Modifications