226 Functions of the Control Panel
Form
Selects the number of lines for the selected paper size and 
orientation. This also causes a line spacing (VMI) change, and the 
new VMI value is stored in the printer. This means that later 
changes in Page Size or Orientation settings cause changes in the 
Form value, based on the stored VMI.
Source SymSet, Dest SymSet
Available only in certain locations where printers are sold with a 
special ROM module installed to handle specific languages.
CR Function, LF Function
These functions are included for users of particular operating 
systems, such as UNIX.
Tray Assign
Changes the assignment for the paper source select command. 
When 4 is selected, the commands are set as compatible with the 
HP LaserJet 4. When 4K is selected, the commands are set as 
compatible with the HP LaserJet 4000, 5000, and 8000. When 5S 
is selected, the commands are set as compatible with the HP 
LaserJet 5Si.