Compuprint 10200 Programmer Manual - Manual (Page 19)

Commands
15
ESC 3
Sets vertical spacing to n/180 inch. (IBM XL24 AGM, EPSON)
ASCII Code ESC 3 n
Hexadecimal Value 1B 33 n
Decimal Value 27 51 n
Range 1 < n < 255
This sequence sets the vertical spacing to n/180 inch. It is ignored if n is equal to 0.
ESC 3
Sets vertical spacing to n/216 inch. (IBM XL24, 2391 +)
ASCII Code ESC 3 n
Hexadecimal Value 1B 33 n
Decimal Value 27 51 n
Range 0 < n < 255
This sequence sets the vertical spacing to n/216 inch.
ESC 4
Sets the current position as top of form (first printable line). (IBM)
ASCII Code ESC 4
Hexadecimal Value 1B 34
Decimal Value 2 2 7 7 5 5 2 2
This sequence sets the first line of the fanfold paper as the current paper position of the form.