You need to hit the space bar to stop the recording.
Then to save it, you hit F3 and then S. It'll then ask for a file name, and then after that, a comment (which you don't need to provide, just hit Enter again).
Then to get back to live data after you've saved the file, you'll need to hit F8 again.
thanks, Dave I was having a fit at the track the other day I could not figure out how to record ,and just when I thought I had it, my laptop battery went dead. I am going to get an adapter for the lighter...