Oh, dang! Sorry, I tend to skip over the first few paragraphs of any manuals I read. Bad habit, I know. Got it now.
By the way, I've used Record position and dragged emitters around, and got some great results. I've found I can get a fluid, realistic motion and make flying emitters look like they're reacting to real gravity and momentum, just be "acting" with my hand. Fantastic fun.
The kind of thing traditional animators did by drawing extra frames and studying moving objects in the real world.