NEC NP901W User Manual page 96

Adjusting Horizontal/Vertical Position [HORIZONTAL/VERTICAL POSITION]
Adjusts the image location horizontally and vertically.
Selecting Overscan Percentage [OVERSCAN]
Select overscan percentage (0%, 5% and 10%) for signal.
NOTE: When [NATIVE] is selected in [RESOLUTION], [OVERSCAN] is not available.
Projected image
Overscaned by 10%
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6. Using On-Screen Menu