User`s manual

Epson FX Emulation9–32
Set Right Margin
ASCII Code ESC Q n
HEX Code 1B 51 n
where n = number of columns from the right edge of the physical page to
the end of the print line.
Purpose Sets the right margin to n columns at the current character width.
Comment The number of inches of margin does not vary if the font, character
width, or horizontal dot density changes. This command
automatically clears and resets horizontal tabs to every eight
characters, then performs a CAN operation. The smallest possible
space between the left and right margins is the width of one double
wide 10 cpi character. If a margin control code violates this
minimum distance, it is ignored.
Select Justification
ASCII Code ESC a n
HEX Code 1B 61 n
Where n is an integer specifying the type of justification
Purpose Justifies text left, centered, right, or full (left and right).
† Comment This command is ignored by the printer, except that if n  0 BS and
HT are also ignored, and if n = 3 DEL is ignored. Epson is
inconsistent: In an FX, when n  0 BS and HT are disabled. In a
DFX–8000, when n = 3 BS and DEL are ignored. In an Okidata
KX–P1180, no disable is documented. n = 0 is the factory default in
Epson printers.