Canon LV-7585 User Manual page 44

Video Input
Keystone
This function is used to store or reset the keystone correction
when the AC power cord is unplugged. Use the Point 7 8 buttons
to switch between each option.
Store. . . Keep the keystone correction even when the AC power
cord is unplugged.
Reset . . Release the keystone correction when the AC power
cord is unplugged.
To correct keystone distortion, press the OK button. The Keystone
dialog box appears. Use the Point ed7 8 buttons to correct
keystone distortion. (p.29)
Ceiling
When this function is set to "On, " the picture is top/bottom and
left/right reversed. This function is used to project the image from a
ceiling-mounted projector.
Rear
When this function is set to "On, " the picture is left/right reversed.
This function is used to project the image from the rear of the
screen.
Reset
This function returns all adjusted values to the factory default
settings. Press the OK button at Reset to display a confirmation
box. To reset, press the OK button at "Yes. "
Quit
Exit the Screen Size Adjustment Menu.
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SCREEN MENU
Move the red frame pointer to a function and
press the OK button.
Ceiling
Rear