I noticed today through my wife's playing with the box, that some live broadcasts TV channels (Ch. 55 and about half a dozen others) seem to have a program rewind / fast forward / pause feature that you can use if you miss the start of the programs, or want to see something earlier in the day. If you get CH228, you can play with it on an English-speaking channel.
I'm hoping that this is enabled system wide once the testing is finished! The channels it's on are pretty minor channels... so it's obvious that CHT is testing out the system.
Two news channels, one sports channel, one God channel... a couple of others, too; at the moment.