IBM A00 Set 7/72 Inch Line Spacing (ESC 1), Set 1/6 Inch Line Spacing (ESC 2), Set n/216 Inch Line Spacing (ESC 3), Select Italic Mode (ESC 4), Cancel Italic Mode (ESC 5), Printable Code Area Expansion (ESC 6)

Set 7/72 Inch Line Spacing (ESC 1)
1B 31
This control sets the line spacing to 7/72 inch.
The application program is responsible for keeping track of the vertical position on
the current page relative to the current line spacing. Changing the line spacing
within a print job without changing the page length can cause printing on the page
perforation. For additional information, see “Set Page Length (ESC C)” on
page 233.
Set 1/6 Inch Line Spacing (ESC 2)
1B 32
This control sets the line spacing at the value set by the last Set TextLine Spacing
(ESC A) control received. The printer sets the line spacing to six lines per inch if no
ESC A has been issued.
Set n/216 Inch Line Spacing (ESC 3)
1B 33 NN
This control changes the line spacing to the value specified by NN.
NN is a value that specifies the line spacing in units of 1/216 inch. Valid values are
0 to 255. If NN equals 0, the printer ignores this control. The printer will adjust the
line spacing to the nearest 1/144 inch.
The application program is responsible for keeping track of the vertical position on
the current page relative to the current line spacing. Changing the line spacing
within a print job without changing the page length can cause printing on the page
perforation. For additional information, see “Set Page Length (ESC C)” on
page 233.
Select Italic Mode (ESC 4)
1B 34
This control turns on italic character printing. This control is valid even if the Epson
Extended Graphics character set has been selected by the Character Table(ESC t)
or the operator panel, but character graphics cannot be italicized. This control is
used in both DP and NLQ.
Cancel Italic Mode (ESC 5)
1B 35 NN
This control cancels italic character printing.
Printable Code Area Expansion (ESC 6)
1B 36
AppendixE. Epson FX-1050 Data Stream 231