HP IDB5220N User Manual page 60

Setting
Dynamic rating
Menu timeout
Factory reset
About
40
Adjusting the Television
Description
Displays additional rating systems that may be available to block channels
based on their content. The available rating systems depend on your input
source.
Sets how many seconds the on-screen menu waits for input before it closes.
Restores all menu settings to factory default settings.
Displays information and status for the television.