Epson SQ-2550 User Manual page 311

C o n t r o l C o d e s b y F u n c t i o n
The following control codes are listed briefly for quick reference.
For a more detailed explanation, see the page reference in
Chapter 9. Variables are not included in this quick reference
due to their complexity. For those codes that contain variables,
such as ESC Q n for setting the right margin, see Chapter 9.
P r i n t e r O p e r a t i o n / D a t a C o n t r o l