query cursor position

answerback / ENQ (enquire) character / W-R-U (who are you)

The response is usually user-configurable. For example, xterm's default response is blank, but this can be set via an .Xresources of answerbackString.

query device status

• <ESC>[0n — Ready, no malfunctions detected.
• <ESC>[3n — Malfunction, error in self-test. Reset and retry.

query printer status

• <ESC>[?13n — Printer not connected to terminal. Data terminal ready (DTR) signal of the printer has not been on since terminal turned on.
• <ESC>[?11n — Printer not ready to print. Printer DTR was on, but is now off.
• <ESC>[?10n — Printer ready to print. Printer DTR is on.

query device attributes

• <ESC>[1;0c — No options
• <ESC>[1;1c — Processor option (STP)
• <ESC>[1;2c — Advanced video option (AVO)
• <ESC>[1;3c — AVO and STP
• <ESC>[1;4c — Graphics option (GPO)
• <ESC>[1;5c — GPO and STP
• <ESC>[1;6c — GPO and AVO
• <ESC>[1;7c — GPO, STP and AVO