NEC NP-P350X - Manual (Page 109)

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5. Using On-Screen Menu
 Menu Descriptions & Functions [SETUP]
[GENERAL]
Correcting Vertical Keystone Distortion Manually [KEYSTONE]
You can correct vertical distortion manually. ( → page 22 )
TIP: When this option is highlighted, pressing the ENTER button will display its slide bar for adjustment.
Saving Vertical Keystone Correction [KEYSTONE SAVE]
This option enables you to save your current keystone settings.
OFF ������������������������ Does not save current keystone correction settings� It will return your keystone correction settings to
“zero”�
ON ������������������������� Saves current keystone correction settings
Saving your change once affects all sources. The changes are saved when the projector is turned off.