Samsung SDP-850DX Software User's Manual page 16

Control Panel → Mini Control Panel switch button
HALF button (It's not visible in the normal in the standard Control Panel view.)
This button appears when you open the Control Panel in the FULL mode. It
allows the program to return to the normal window. (Hotkey : [Esc] key)
Wide/Tele : Reduces or enlarges the image size on the screen.
Near/Far : Adjusts focus
IRIS+/- : Adjusts the brightness of the image on the screen.
Blue +/- : Adjusts the blue color.
Red +/- : Adjusts the red color.
AF : Adjusts auto focus
AWC : Adjusts auto color
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