Samsung LDO19WS Service Manual page 12

21. PRE-CH
This button is used to return to the immediately
previous channel.
22. SOURCE - Available in PIP Mode
Selects the Video source.
23. SIZE - Available in PIP Mode
You can switch the PIP picture size.
24. POSITION - Available in PIP Mode
Changes the Position of the PIP window.
25. MAGIC-CH
MagicChannel enables you to watch only certain
channels.
This function is available only in Korea.
10 Operating Instructions and Installation
10-7