Dell Projector 4100MP - Manual (Page 45)

The projector will always automatically search for available input signals when Auto Source is On, which is the default
setting. Press the Source button with Auto Source On to automatically search for the next available input signal. Selecting
Off will lock on the current input source. Set Auto-Source to Off to step through the different input signals manually.
OSD Timeout
Adjust the time delay of the OSD Timeout. The Default setting is 15 seconds.
Language Menu
Language
Language
Press or to select the preferred language.
PIP Image Menu