It means you have to send to printer CHR(27) + "x" + CHR(1). If I rememeber correctly in cases when n=0 or 1 you can also use characters "0" or "1", like
CHR(27) + "x" + "1".

ESCxn: ESC   -> CHR(27) 
       x     -> "x" or CHR(120)
       n=0/1 -> CHR(0)/CHR(1) or "0"/"1"

>I've downloaded LX 300 manual
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> ASCII DEC HEX DESCRIPTION
> ESCxn 120 78 select NLQ or draft
> n = 1: NLQ
> n = 0: draft
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> I didnt understand the table above.
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> As far as I understood I have to use chr (120)
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> But how can I do if to select between NLQ and draft ?
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> Where will I put n = 1 or n = 0
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> Thanks
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>
> Moises