Resetting view after rotating using Constrained Orbit feature.

Hi,

I am sure I am being quite thick, but I have recently been trying to get to grips with DraftSight, and have been working on some 2D layouts. Tried to get a bit fancy and add depth to the drawing and then used the Constrained Orbit feature to rotate the image. However, I now can't get the drawing back to its original non-rotated view (accurately).

Can anyone tell me how you reset the view please?

Thanks in advance,