Staple or Paperclip Your Return.the Ultimate Tax Question

Such an inane question, but I can find no authoritative answer on this simple question, not even from the IRS. Any one tax forum with tax professionals will render totally different answers. So, is there an authoritative answer?
Do I staple or paperclip my return, or none?
If stapled or paperclipped....exactly where on the page should the staple or clip be attached?

Crazy, nutty...but I've never found an final answer for this.

Staple or Paperclip Your Return.the Ultimate Tax Question