In the guides to the left of the channel number there are arrows on some channels, what are they for? They do not appear to identify grouping or do they.
Those are 'lookback arrows'. If you put the cursor onto a row that has it, you can press the Rewind arrow button on your remote twice quickly and you should see the cursor move to the channel logo/number itself. Then you can view a list of all programs that aired on that channel up to 30 hours ago.
