Samsung 400CXN - Manual (Page 68)

Format
MENU → → → → ENTER → [Setup] → → → → → → → ENTER → [Video
Wall ]→ → ENTER → [Format]
→ , → ENTER
The Format can be selected to see a divided screen.
1. Full
Provides a full screen without any margins.
2. Natural
Displays a natural image with the original aspect ratio intact.
Horizontal
MENU → → → → ENTER → [Setup] → → → → → → → ENTER → [Video
Wall ]→ → → ENTER → [Horizontal]
→ , → ENTER
Sets how many parts the screen should be divided horizontally.
Five adjustment levels: 1, 2, 3, 4, and 5.
Vertical
MENU → → → → ENTER → [Setup] → → → → → → → ENTER → [Video
Wall ]→ → → → ENTER → [Vertical]
Adjusting the LCD Display