Epson EPL-N1600 Reference Manual page 117

Height
Chooses the height of the font used in the print job, if the font is
a proportional scalable font. The height is expressed in points; one
inch being approximately equal to 72 points.
SymSet
Chooses the symbol set of the font used in the print job. See
Appendix?? for details of the different symbol sets available in
this printer. If you select a symbol set which is not available for
the font selected with the Font Source and Font Number settings,
the printer uses the default symbol set.
Form
Selects the number of lines for the selected paper size and
orientation. This causes a line spacing (VMI) change as well, and
this new VMI value is stored in the printer. This means that any
later changes in the Page Size or Orientation settings cause
changes to this Form value, based on the VMI settings stored here.
Source SymSet
You can only make this setting if an optional font ROM has been
installed.
Dest SymSet
You can only make this setting if an optional font ROM has been
installed.
CR Function
If you set CR Function to CR, the printer does not send an
automatic line feed (LF) command with each carriage return (CR).
When you set CR Function to CR+LF, the printer adds a line feed
to each carriage return it receives. If your text lines overprint each
other, set CR Function to CR+LF.
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SelecType
5