NEC PA1705UL-W Installation Manual page 106

4. Multi-Screen Projection
② Adjust [POSITION] and [RANGE] to determine an area of overlapped edges of
images projected from each projector.
When [MARKER] is set to [ON], markers of four colors are displayed on the screen.
The cyan and green markers represent the edges of the region where images overlap, the magenta
and red markers represent the range of overlapping (region/width).
Turn on [RIGHT] Turn on [LEFT]
* The 2 screens are separated in the diagram for explanatory purposes.
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