This task explains
how to view an object along a perpendicular to a selected plane.
Select View > Modify > Normal View or click
in the View toolbar.
Select a plane.
The object is projected
onto the selected plane so you can now view along a normal to the
If you select an element other than a plane, the object is projected
onto an imaginary plane tangent to the selected element. This plane is
created at the point where you clicked and is set parallel to the screen.