EdgeRails in Ruby on Rails

I was looking for a way to move to EdgeRails. A commenter on Ruby on Rails provided me with the following link:

EdgeRails in Ruby on Rails: "Edge Rails is a term that means you are running a local copy of the latest SVN trunk of Rails, instead of using gems. By checking out the trunk into your /vendor dir, Rails will automatically use that instead of the gems installed on your machine."

The above page tells you all about how you can move to EdgeRails whether you are using SVN or gems
--Frank