how to tension a canopy?

Answer 1

http://www.freepatentsonline.com/6994099.html

Abstract: A shelter having an internal frame comprised of a roof supported by legs. A canopy covers the roof of the frame to provide protection from the elements. The canopy is taughtly held onto the frame by cords which pass through sleeves in the front and back of the canopy and attach to the corner legs of the frame. To tension the canopy onto the frame, the corner legs are twisted to tension the cords and, in turn, the canopy. Upon tensioning the canopy, the corner legs are locked in the rotated position.


For fun check out the pictures of canopies link.

Answer 2

fire....the closer the canopy is put near the flame the more tense the canopy will get!