How do I move the preview window?
 

As you can see in this screenshot, the preview window is locked in the bottom part of the Vegas work area. It used to be free floating, but somehow I accidentally dragged it down there and it got stuck.

Thanks,

See those six little dots on the upper-left corner of the preview window? Click on those and drag the window out of docked mode.

Thanks for the help! I wish I could've found the instruction somehow by searching the Help file. I clicked on Help, Contents and Index, then typed in "Preview Window". There are a few tips about the Preview Window, none of which tells the user how to move it out of dock. Is there a manual somewhere that explains what each and every icon does?

Open the help file and search for "dock". That will show you how to undock the window.