Samsung UF-130DX Software User's Manual page 18

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Psav(Preset Save) : Allow to save the customized user
setting(Wide/Tele, Focus, Brightness, Adjusting Color).
Press number keys from 1 through 4.
Pexe(Preset Execution) : Allow to activate the preset
user setting(Wide/Tele, Focus, Brightness, Adjusting
Color). Press number keys from 1 through 4.
Displays the status of Control function(freeze, aperture,
internal/external, lamp).
AVICapture : Capture digital images from Digital
presenter to AVI file.
ACTIVATE : When display mode is single(For details, see
user's manual), if Live Viewer will be off, buttons of
USBViewer were not available, and Activate button was
available. When you press the Activate button, buttons of
USBViewer are available(UF-130DX only).