You will not be able to see this option when you are in full screen mode, unless you exit full screen to get back to the standard view.
A description of the current programme will appear beneath the player when not in full screen mode. You can view descriptions of programmes on other channels without having to change the channel by tapping the “i” icon.
A blue text box, like the one pictured below will appear with the programme description. To close this description, tap anywhere on the screen.