NEC M402W User Manual page 19

(1) (Source)..... Selects an input source of the projector.
(2) (Picture) .... Turns on or off AV-MUTE (Picture mute), and turns on or off FREEZE (Freeze a picture), and Geometric
Correction Tool (GCT) functions.
(3) (Sound) ..... Turns on or off AV-MUTE (Sound mute), play the sound and turns up or down the volume.
(4) (Others) ..... Uses "Update", "HTTP Server"*, "Settings" and "Information".
* The HTTP Server cannot be selected when a USB cable is connected.
(5) (Exit).......... Exit Image Express Utility Lite. You can also turn off the projector at the same time.
(6) (Help)........... Displays the help of Image Express Utility Lite.
(6) (1) (2) (3) (4) (5)