Hello, I just bought this recently and I have a couple quick questions on how to use it. 1) Am I missing something or is there not a stop button? If Im watching something on the DVR how do I stop it and get out completely? I see play, pause, but no stop. The pause just pauses it and I have to click on DVR to go in and delete it. 2) Is there a return/previous channel button so I can return to the channel I was watching previously? 3) Is there a button I can press to start recording or do I have to go to the menu and click till I get to it? 4) When you have the PIP on is there a way you can toggle between what is on the main screen and in the small icon by a touch of a button? Thank you for the help.