Citizen Systems iDP-3550 - Manual (Page 82)

ESC "Q" n
[Function] Setting the right margin
[Code] <1B>H <51>H n
[Range] 2
≤
n
≤
(Max. print columns)
[Outline] This command sets the right margin and printing is performed up to n-columns.
HT
[Function] Horizontal tab
[Code] <09>H
[Outline] This command moves a printing position to the preset next horizontal tab position. This
command will be ignored unless there is the next horizontal tab position.