While watching my recording of Sherlock just now (from BBC1 at 9:30pm on Friday) a short while into the playback, an overlay message appeared for a few seconds in the top centre of the screen that said something like Fri BBC1 19:00 or some other time. It wasn't there long. It certainly wasn't details of the program I was watching I know that. It could potentially have been the time I created the recording event.
What's the deal? What is that?