InFocus 620 - Manual (Page 37)

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To change a menu setting, use the disk mouse to move the cursor
to the setting you want to change, then use one of the two buttons
below the disk mouse to make the changes.
The status bar at the top of each menu indicates the source that is
currently active. For example, if you have both a computer and a
video player connected, “Source: Computer” or “Source: Video”
displays depending on whether you’ve pressed the
computer or
the video button.
F IGURE 30
On-screen menu status bar