Dell 5100cn Color Laser Printer - Manual (Page 276)

-Mfo=mode
Specifies orientation for multipurpose feeder.
Available orientations for multipurpose feeder are as follows.
le
Landscape
ler
Landscape (Rotated)
se
Portrait
ser
Portrait (Rotated)
-Pon
Specifies Alternate Tray.
Available Alternate Trays are as follows.
0
Use Printer Settings
1
Display Message
2
Feed from multipurpose feeder
3
Use Nearest Size (Adjust to Fit)
4
Use Larger Size (Adjust to Fit)
5
Use Nearest Size (No Zoom)
6
Use Larger Size (No Zoom)
-St=mode
Specifies Feed Separators from.
Available Feed Separators from the following.
auto
AutoTray/Auto
1
1stTray/Tray 1 (standard 500-sheet tray)
2
2ndTray/Tray 2 (optional 500-sheet tray module or 1000-sheet tray module)
3
3rdTray/Tray 3 (optional 1000-sheet tray module)
4
4thTray/Tray 4 (optional 1000-sheet tray module)
off
Off