Module c1 

C1 control bytes (0x80..=0x9f).

Category

C1 controls are the 8-bit single-byte forms of terminal controls such as DCS, CSI, ST, OSC, PM, and APC.

7-bit versus 8-bit forms

Each C1 byte has a 7-bit fallback spelling ESC followed by byte - 0x40. For example, CSI is 0x9b while the 7-bit CSI introducer is the two-byte sequence ESC [.

8-bit:  9B        CSI
7-bit:  1B 5B     ESC [
       ─┬ ─┬
       ESC final

Mode interaction

The byte constants do not enable any terminal mode. The tokenizer recognizes the C1 introducers directly and also recognizes their 7-bit ESC forms.

Constants

APC

Application Program Command introducer byte 0x9f; 7-bit spelling is ESC _.

BPH

Break Permitted Here C1 control byte 0x82.

CCH

Cancel Character C1 control byte 0x94.

CSI

Control Sequence Introducer byte 0x9b; 7-bit spelling is ESC [.

DCS

Device Control String introducer byte 0x90; 7-bit spelling is ESC P and terminator is ST.

EPA

End of Protected Area C1 control byte 0x97.

ESA

End of Selected Area C1 control byte 0x87.

HOP

High Octet Preset C1 control byte 0x81.

HTJ

Horizontal Tab with Justify C1 control byte 0x89.

HTS

Horizontal Tab Set C1 control byte 0x88; 7-bit spelling is ESC H.

IND

Index C1 control byte 0x84; 7-bit spelling is ESC D.

MW

Message Waiting C1 control byte 0x95.

NBH

No Break Here C1 control byte 0x83.

NEL

Next Line C1 control byte 0x85; 7-bit spelling is ESC E.

OSC

Operating System Command introducer byte 0x9d; 7-bit spelling is ESC ].

PAD

Padding Character C1 control byte 0x80.

PLD

Partial Line Down C1 control byte 0x8b.

PLU

Partial Line Up C1 control byte 0x8c.

PM

Privacy Message introducer byte 0x9e; 7-bit spelling is ESC ^.

PU1

Private Use 1 C1 control byte 0x91.

PU2

Private Use 2 C1 control byte 0x92.

RI

Reverse Index C1 control byte 0x8d; 7-bit spelling is ESC M.

SCI

Single Character Introducer C1 control byte 0x9a.

SGCI

Single Graphic Character Introducer C1 control byte 0x99.

SOS

Start of String introducer byte 0x98; 7-bit spelling is ESC X.

SPA

Start of Protected Area C1 control byte 0x96.

SS2

Single Shift 2 C1 control byte 0x8e; 7-bit spelling is ESC N.

SS3

Single Shift 3 C1 control byte 0x8f; 7-bit spelling is ESC O.

SSA

Start of Selected Area C1 control byte 0x86.

ST

String Terminator byte 0x9c; 7-bit spelling is ESC \.

STS

Set Transmit State C1 control byte 0x93.

VTS

Vertical Tab Set C1 control byte 0x8a.