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Repeat a trial/replay a video

This seems like the simplest question ever, and it seems like it must have been asked before, but I can’t find it if so…

I have created an experimenter in the builder and it’s all working fine. On each trial the participant watches a 5sec video and provides a rating using a visual analogue scale. But suppose the participant is looking out of the window when the video plays -I’d like them to be able to replay the video by pressing (say) “r”. Presumably this could be done either by replaying the video, or restarting the whole trial - but how?

If possible, I’d prefer to keep everything in the builder -but understand if this is the kind of thing that would require code. THANKS!