DEC 2100 Operator's Manual page 205

DSR—Device Status Request
CSI Ps n
CSI ?Ps n
Where:
Ps = 0,5 Send an extended status report.
Ps = 6 Send a cursor position report.
Ps = ?1 Disable all unsolicited status reports.
Ps = ?2 Enable brief unsolicited status reports, send extended status report.
Ps = ?3 Enable extended unsolicited status report, send extended status report.
JFY—Justify
CSI Ps SP F
Where:
Ps = 0 is stop justification.
Ps = 2 is justify with limits.
Ps = ?2 is justify without limits.
RIS—Reset to Initial State
ESC c
SnC1R—C1 Receive Mode
—(Interpret C1 as C0)
CSI SP 6
—(Interpret C1 as C1)
CSI SP 7
A–22 DEClaser 2100 Printer Operator's Guide