When using Sony VPL-XW6000 Projector, you can flip images horizontally or vertically depending on the installation method. This is used for ceiling mount installation or rear projection installation.
[HV]
Images are flipped horizontally and vertically.
[H]
Images are flipped horizontally.
[V]
Images are flipped vertically.
[Off]
Images are not flipped.
Read more:
Sony VPL-XW6000 Projector Brightness Adjustment Guide