InFocus LP280 User Manual page 27

Volume
Press the Volume buttons to adjust the volume.
Arrow buttons
Use these buttons to navigate through and make adjustments to
the on-screen menus. See "Using the On-Screen Menus" on
page 21 for details.
Keystone
Use this feature to adjust the image vertically and make a squarer
image.
1 Press the
Keystone up
image, and press the
part. You can also adjust keystone from the Basic menu (see
page 23 for details on the menu).
increasing keystone
arrow to reduce the upper part of the
arrow to reduce the lower
Keystone down
decreasing keystone
F 12
IGURE
Adjusting the keystone
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