Epson V11H998520 User Manual page 256

Setting
Vertical Installation
Projection
Auto Screen Adjustment
Options
Yes
No
Front
Front/Upside Down
Rear
Rear/Upside Down
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Description
Set to Yes if you installed the
projector in a vertical position
Selects the way the projector faces
the screen so the image is oriented
correctly
Automatically adjusts the image
shape when corner markers are
placed on the projection surface