Lenovo IdeaCentre B540 User Manual page 36

Language settings
Press the MENU button on the remote control, then select Setup → Menu
Language.
Picture In Picture (PIP) Size
Press the MENU button on the remote control, then select PIP → PIP Size to
adjust the size of the sub-picture.
Note: When in PIP mode, press the
alternate the video between the main picture and sub-picture.
button on the remote control to
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User Guide