...track index marks on CDs?

This thought popped into my head the other day when I was feeding CDs into the computer for inclusion on the old iTunes. I was popping in a couple of classical CDs and Turn of a Friendly Card by the Alan Parsons Project. It suddenly occurred to me that, on my first ever CD player, a lovely and late lamented old Rotel, which I bought around about 1988 or so these very discs had several long tracks which were split into sub-tracks by index marks.

Of course that meant that, for example, on a concerto (where one concerto = one track) you could jump to a particular movement you wanted to hear by selecting an index point within the track. Same with the Alan Parsons Proj album where "side one" was now just one long track. Every single CD player I've had since that old Rotel (including newer Rotels) and all the various PC based players I've ever used seem to omit that very useful feature.

The irony is that there's a very similar feature on some Radio 4 comedy series I've downloaded as audiobooks where they are one long track with chapters for each episode.

Never thought about this index feature for goodness knows how many years but, of course, now I've remembered its past existance I keep thinking about just how useful it might be... Maybe I need to get out more!