In the "show me" thing in Videofactory2, it shows how to do a video fade-in. Following steps 1 and 2, it's all very simple, you just drag the fade handles. And that's all I have to do, to create a fade-in.

But then in step 3, it says you must "drag the fade level of the video event to change the opacity of this event." Why? When the opacity level is changed, it doesn't seem to be related to the fade-in...the opacity level of the entire clip is changed.