To Orientate by Reference
1. Click > > 
Reorient. The View dialog box opens.
Reorient. The View dialog box opens.2. On the Orientation sub-tab, in the Type box, select Orient by reference as the orientation type.
3. Select Options, select a plane or axis as a reference for orientation from the list in the Reference 1 box.
4. To use the axis method, select Horizontal axis or Vertical axis from the list in the Reference 1 box. Select an axis from the screen or from the dialog box. The model is orientated in the view.
or
To use the plane method, select one of the planes from the list in the Reference 1 box and select the surface from the view. This orientates the selected surface along the defined plane, but you must select another reference point to complete the orientation.
5. If you orientate a surface along a plane, select the required plane from the list in the Reference 2 box. Select the surface to orientate along the second reference plane. The model is orientated in the view.
6. To save the view, type a name in the View Name box and click 
. Click Saved Orientations to open the list of saved orientations. The new saved view is listed.
. Click Saved Orientations to open the list of saved orientations. The new saved view is listed.7. Click OK.