Thank you Borate. I had seen this in the FAQs but, rather unintelligently, thought it would allow only 50%, 100% and 200%, whereas I wanted 20%. All OK now.
Using the "Playback Speed Change" button beneath the clip preview panel I set the speed of a clip to 0.2x. When I put that clip in a sequence, it first plays at the slow speed but subsequently reverts to the original, full-speed file. How do I keep the slow speed that I want.
I have a video in the clips bin. I want to make three short clips from different parts of it. I expected to be able to save each short clip as a separate file in the bin, but can't find a way to do that.