Hi gregdbrown,
Revision is quite an old version as it is still V4.
This is why the tutorials will look different when it comes to layer structure and the settings.
In your version you will find the softedge parameters on the "camera"-layer, which is underneath your video and graphics layers.
You will find all tutorials here:
http://www.coolux.de/cooluxsupport/tutorials/Lesson 20 covers the output where you will find keystone and softedge parameters. In V5 the camera has been split to camera and output which is still combined in your version.
Cheers
Markus