Compuprint 9058 Programmer Manual - Manual (Page 14)

EPSON/IBM Mode
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ESC 3
Sets n/180-inch line spacing. (EPSON)
ASCII Code ESC 3 n
Hexadecimal Value 1B 33 n
Decimal Value 27 51 n
Range 0 < n < 255
This command sets the line spacing to n/180 inch. If the line spacing is
changed, it does not affect previous settings for vertical tabs or page
length.
ESC 3
Sets graphics line spacing at n/216 inch. (IBM)
ASCII Code ESC 3 n
Hexadecimal Value 1B 33 n
Decimal Value 27 51 n
Range 0 < n < 255
This command sets graphics line spacing at n default unit defined by the
ESC [ \ command. To move exactly n/216 inch, n must be an integer
multiple of 3.
ESC 4
Sets top of form (first printable line). (IBM)
ASCII Code ESC 4
Hexadecimal Value 1B 34
Decimal Value 27 52
This sequence sets the first line of the fanfold paper as the current paper
position of the form.