Maby I have the answer for the P-in-P. I use it with an Avant with a PIP module build in.
I have used the following commands (all seperate icons):
P-in-P 0:000:TV:PICTURE_IN_PICTURE
(green button) Upper left 0:000:TV:CNTL_REWIND
(red button) Bottem left 0:000:TV:CNTL_STEP_DW
(yellow button) Upper right 0:000:TV:CNTL_WIND
(blue button) Bottem right 0:000:TV:CNTL_STEP_UP
Change picture (PIP and TV) 0:000:TV:CIFFER_0
Your problem is the first line (0:000:TV:PICTURE_IN_PICTURE) because the command PICTURE_IN_PICTURE is not in the list. Just type the command. It will work.
I want to show you the screen of my PIP page on the BEO5. But I don't know how to add a picture in this message. So you have to do it with the commands only.
Piet