Quick Tip : How to render part of the frame with the Render Border option

Hi there
Render Border option comes really in handy in that case there you had a really complicated scene and you wanted to preview render just a part of it either live in the 3D view (Cycles) or as a render output
This quick video tip shows you how

This is the link to this tutorial :
http://www.youtube.com/watch?v=CtKL3hgWpgU

Hope you’ll enjoy this!
Peter