ctlseqs.txt revision e39b573c
11.3Spgoyette 21.1Spgoyette 31.1Spgoyette 41.1Spgoyette 51.1Spgoyette 61.1Spgoyette 71.1Spgoyette 81.1Spgoyette 91.1Spgoyette 101.1Spgoyette Xterm Control Sequences 111.1Spgoyette 121.1Spgoyette 131.1Spgoyette Edward Moy 141.1Spgoyette University of California, Berkeley 151.1Spgoyette 161.1Spgoyette Revised by 171.1Spgoyette 181.1Spgoyette Stephen Gildea 191.1Spgoyette X Consortium (1994) 201.1Spgoyette 211.1Spgoyette Thomas Dickey 221.1Spgoyette XFree86 Project (1996-2006) 231.1Spgoyette invisible-island.net (2006-2011) 241.1Spgoyette 251.1Spgoyette 261.1Spgoyette 271.1SpgoyetteDefinitions 281.1Spgoyette 291.1Spgoyettec The literal character c. 301.1Spgoyette 311.1SpgoyetteC A single (required) character. 321.1Spgoyette 331.1SpgoyettePs A single (usually optional) numeric parameter, composed of one of 341.1Spgoyette more digits. 351.1Spgoyette 361.1SpgoyettePm A multiple numeric parameter composed of any number of single 371.1Spgoyette numeric parameters, separated by ; character(s). Individual val- 381.1Spgoyette ues for the parameters are listed with Ps . 391.1Spgoyette 401.1SpgoyettePt A text parameter composed of printable characters. 411.1Spgoyette 421.2SwizC1 (8-Bit) Control Characters 431.1Spgoyette 441.3SpgoyetteThe xterm program recognizes both 8-bit and 7-bit control characters. 451.2SwizIt generates 7-bit controls (by default) or 8-bit if S8C1T is enabled. 461.1SpgoyetteThe following pairs of 7-bit and 8-bit control characters are equiva- 471.1Spgoyettelent: 481.2Swiz 491.3SpgoyetteESC D 501.2Swiz Index (IND is 0x84). 511.2SwizESC E 521.2Swiz Next Line (NEL is 0x85). 531.1SpgoyetteESC H 541.1Spgoyette Tab Set (HTS is 0x88). 551.1SpgoyetteESC M 561.2Swiz Reverse Index (RI is 0x8d). 571.1SpgoyetteESC N 581.1Spgoyette Single Shift Select of G2 Character Set (SS2 is 0x8e). This 591.1Spgoyette affects next character only. 601.1SpgoyetteESC O 611.2Swiz Single Shift Select of G3 Character Set (SS3 is 0x8f). This 621.2Swiz affects next character only. 631.1SpgoyetteESC P 641.1Spgoyette Device Control String (DCS is 0x90). 651.1SpgoyetteESC V 661.1Spgoyette Start of Guarded Area (SPA is 0x96). 671.1SpgoyetteESC W 681.1Spgoyette End of Guarded Area (EPA is 0x97). 691.1SpgoyetteESC X 701.1Spgoyette Start of String (SOS is 0x98). 711.1SpgoyetteESC Z 721.1Spgoyette Return Terminal ID (DECID is 0x9a). Obsolete form of CSI c (DA). 73ESC [ 74 Control Sequence Introducer (CSI is 0x9b). 75ESC \ 76 String Terminator (ST is 0x9c). 77ESC ] 78 Operating System Command (OSC is 0x9d). 79ESC ^ 80 Privacy Message (PM is 0x9e). 81ESC _ 82 Application Program Command (APC is 0x9f). 83 84These control characters are used in the vtXXX emulation. 85 86VT100 Mode 87Most of these control sequences are standard VT102 control sequences, 88but there is support for later DEC VT terminals (i.e., VT220, VT320, 89VT420), as well as ISO 6429 and aixterm color controls. The only VT102 90feature not supported is auto-repeat, since the only way X provides for 91this will affect all windows. There are additional control sequences to 92provide xterm-dependent functions, such as the scrollbar or window size. 93Where the function is specified by DEC or ISO 6429, the code assigned to 94it is given in parentheses. The escape codes to designate and invoke 95character sets are specified by ISO 2022; see that document for a dis- 96cussion of character sets. 97 98Single-character functions 99BEL Bell (Ctrl-G). 100BS Backspace (Ctrl-H). 101CR Carriage Return (Ctrl-M). 102ENQ Return Terminal Status (Ctrl-E). Default response is an empty 103 string, but may be overridden by a resource answerbackString. 104FF Form Feed or New Page (NP). Ctrl-L is treated the same as LF. 105LF Line Feed or New Line (NL). (LF is Ctrl-J). 106SI Shift In (Ctrl-O) -> Switch to Standard Character Set. This 107 invokes the G0 character set (the default). 108SO Shift Out (Ctrl-N) -> Switch to Alternate Character Set. This 109 invokes the G1 character set. 110SP Space. 111TAB Horizontal Tab (HT) (Ctrl-I). 112VT Vertical Tab (Ctrl-K). This is treated the same as LF. 113 114Controls beginning with ESC 115This excludes controls where ESC is part of a 7-bit equivalent to 8-bit 116C1 controls, ordered by the final character(s). 117ESC SP F 7-bit controls (S7C1T). 118ESC SP G 8-bit controls (S8C1T). 119ESC SP L Set ANSI conformance level 1 (dpANS X3.134.1). 120ESC SP M Set ANSI conformance level 2 (dpANS X3.134.1). 121ESC SP N Set ANSI conformance level 3 (dpANS X3.134.1). 122ESC # 3 DEC double-height line, top half (DECDHL). 123ESC # 4 DEC double-height line, bottom half (DECDHL). 124ESC # 5 DEC single-width line (DECSWL). 125ESC # 6 DEC double-width line (DECDWL). 126ESC # 8 DEC Screen Alignment Test (DECALN). 127ESC % @ Select default character set. That is ISO 8859-1 (ISO 2022). 128ESC % G Select UTF-8 character set (ISO 2022). 129ESC ( C Designate G0 Character Set (ISO 2022, VT100). 130 Final character C for designating 94-character sets. In this 131 list, 0 , A and B apply to VT100 and up, the remainder to 132 VT220 and up: 133 C = 0 -> DEC Special Character and Line Drawing Set. 134 C = A -> United Kingdom (UK). 135 C = B -> United States (USASCII). 136 C = 4 -> Dutch. 137 C = C or 5 -> Finnish. 138 C = R -> French. 139 C = Q -> French Canadian. 140 C = K -> German. 141 C = Y -> Italian. 142 C = E or 6 -> Norwegian/Danish. 143 C = Z -> Spanish. 144 C = H or 7 -> Swedish. 145 C = = -> Swiss. 146ESC ) C Designate G1 Character Set (ISO 2022, VT100). 147 The same character sets apply as for ESC ( C. 148ESC * C Designate G2 Character Set (ISO 2022, VT220). 149 The same character sets apply as for ESC ( C. 150ESC + C Designate G3 Character Set (ISO 2022, VT220). 151 The same character sets apply as for ESC ( C. 152ESC - C Designate G1 Character Set (VT300). 153 The same character sets apply as for ESC ( C. 154ESC . C Designate G2 Character Set (VT300). 155 The same character sets apply as for ESC ( C. 156ESC / C Designate G3 Character Set (VT300). 157 These work for 96-character sets only. 158 C = A -> ISO Latin-1 Supplemental. 159ESC 7 Save Cursor (DECSC). 160ESC 8 Restore Cursor (DECRC). 161ESC = Application Keypad (DECPAM). 162ESC > Normal Keypad (DECPNM). 163ESC F Cursor to lower left corner of screen. This is enabled by the 164 hpLowerleftBugCompat resource. 165ESC c Full Reset (RIS). 166ESC l Memory Lock (per HP terminals). Locks memory above the cur- 167 sor. 168ESC m Memory Unlock (per HP terminals). 169ESC n Invoke the G2 Character Set as GL (LS2). 170ESC o Invoke the G3 Character Set as GL (LS3). 171ESC | Invoke the G3 Character Set as GR (LS3R). 172ESC } Invoke the G2 Character Set as GR (LS2R). 173ESC ~ Invoke the G1 Character Set as GR (LS1R). 174 175Application Program-Control functions 176APC Pt ST None. xterm implements no APC functions; Pt is ignored. Pt 177 need not be printable characters. 178 179Device-Control functions 180DCS Ps; Ps| Pt ST 181 User-Defined Keys (DECUDK). The first parameter: 182 Ps = 0 -> Clear all UDK definitions before starting 183 (default). 184 Ps = 1 -> Erase Below (default). 185 The second parameter: 186 Ps = 0 <- Lock the keys (default). 187 Ps = 1 <- Do not lock. 188 The third parameter is a ';'-separated list of strings denot- 189 ing the key-code separated by a '/' from the hex-encoded key 190 value. The key codes correspond to the DEC function-key codes 191 (e.g., F6=17). 192DCS $ q Pt ST 193 Request Status String (DECRQSS). The string following the "q" 194 is one of the following: 195 " q -> DECSCA 196 " p -> DECSCL 197 r -> DECSTBM 198 m -> SGR 199 xterm responds with DCS 1 $ r Pt ST for valid requests, 200 replacing the Pt with the corresponding CSI string, or DCS 0 $ 201 r Pt ST for invalid requests. 202DCS + p Pt ST 203 Set Termcap/Terminfo Data (xterm, experimental). The string 204 following the "p" is a name to use for retrieving data from 205 the terminal database. The data will be used for the "tcap" 206 keyboard configuration's function- and special-keys, as well 207 as by the Request Termcap/Terminfo String control. 208DCS + q Pt ST 209 Request Termcap/Terminfo String (xterm, experimental). The 210 string following the "q" is a list of names encoded in hexa- 211 decimal (2 digits per character) separated by ; which corre- 212 spond to termcap or terminfo key names. 213 Two special features are also recognized, which are not key 214 names: Co for termcap colors (or colors for terminfo colors), 215 and TN for termcap name (or name for terminfo name). 216 xterm responds with DCS 1 + r Pt ST for valid requests, adding 217 to Pt an = , and the value of the corresponding string that 218 xterm would send, or DCS 0 + r Pt ST for invalid requests. 219 The strings are encoded in hexadecimal (2 digits per charac- 220 ter). 221 222Functions using CSI , ordered by the final character(s) 223CSI Ps @ Insert Ps (Blank) Character(s) (default = 1) (ICH). 224CSI Ps A Cursor Up Ps Times (default = 1) (CUU). 225CSI Ps B Cursor Down Ps Times (default = 1) (CUD). 226CSI Ps C Cursor Forward Ps Times (default = 1) (CUF). 227CSI Ps D Cursor Backward Ps Times (default = 1) (CUB). 228CSI Ps E Cursor Next Line Ps Times (default = 1) (CNL). 229CSI Ps F Cursor Preceding Line Ps Times (default = 1) (CPL). 230CSI Ps G Cursor Character Absolute [column] (default = [row,1]) (CHA). 231CSI Ps ; Ps H 232 Cursor Position [row;column] (default = [1,1]) (CUP). 233CSI Ps I Cursor Forward Tabulation Ps tab stops (default = 1) (CHT). 234CSI Ps J Erase in Display (ED). 235 Ps = 0 -> Erase Below (default). 236 Ps = 1 -> Erase Above. 237 Ps = 2 -> Erase All. 238 Ps = 3 -> Erase Saved Lines (xterm). 239CSI ? Ps J 240 Erase in Display (DECSED). 241 Ps = 0 -> Selective Erase Below (default). 242 Ps = 1 -> Selective Erase Above. 243 Ps = 2 -> Selective Erase All. 244CSI Ps K Erase in Line (EL). 245 Ps = 0 -> Erase to Right (default). 246 Ps = 1 -> Erase to Left. 247 Ps = 2 -> Erase All. 248CSI ? Ps K 249 Erase in Line (DECSEL). 250 Ps = 0 -> Selective Erase to Right (default). 251 Ps = 1 -> Selective Erase to Left. 252 Ps = 2 -> Selective Erase All. 253CSI Ps L Insert Ps Line(s) (default = 1) (IL). 254CSI Ps M Delete Ps Line(s) (default = 1) (DL). 255CSI Ps P Delete Ps Character(s) (default = 1) (DCH). 256CSI Ps S Scroll up Ps lines (default = 1) (SU). 257CSI Ps T Scroll down Ps lines (default = 1) (SD). 258CSI Ps ; Ps ; Ps ; Ps ; Ps T 259 Initiate highlight mouse tracking. Parameters are 260 [func;startx;starty;firstrow;lastrow]. See the section Mouse 261 Tracking. 262CSI > Ps; Ps T 263 Reset one or more features of the title modes to the default 264 value. Normally, "reset" disables the feature. It is possi- 265 ble to disable the ability to reset features by compiling a 266 different default for the title modes into xterm. 267 Ps = 0 -> Do not set window/icon labels using hexadecimal. 268 Ps = 1 -> Do not query window/icon labels using hexadeci- 269 mal. 270 Ps = 2 -> Do not set window/icon labels using UTF-8. 271 Ps = 3 -> Do not query window/icon labels using UTF-8. 272 (See discussion of "Title Modes"). 273CSI Ps X Erase Ps Character(s) (default = 1) (ECH). 274CSI Ps Z Cursor Backward Tabulation Ps tab stops (default = 1) (CBT). 275CSI Pm ` Character Position Absolute [column] (default = [row,1]) 276 (HPA). 277CSI Ps b Repeat the preceding graphic character Ps times (REP). 278CSI Ps c Send Device Attributes (Primary DA). 279 Ps = 0 or omitted -> request attributes from terminal. The 280 response depends on the decTerminalID resource setting. 281 -> CSI ? 1 ; 2 c (``VT100 with Advanced Video Option'') 282 -> CSI ? 1 ; 0 c (``VT101 with No Options'') 283 -> CSI ? 6 c (``VT102'') 284 -> CSI ? 6 0 ; 1 ; 2 ; 6 ; 8 ; 9 ; 1 5 ; c (``VT220'') 285 The VT100-style response parameters do not mean anything by 286 themselves. VT220 parameters do, telling the host what fea- 287 tures the terminal supports: 288 Ps = 1 -> 132-columns. 289 Ps = 2 -> Printer. 290 Ps = 6 -> Selective erase. 291 Ps = 8 -> User-defined keys. 292 Ps = 9 -> National replacement character sets. 293 Ps = 1 5 -> Technical characters. 294 Ps = 2 2 -> ANSI color, e.g., VT525. 295 Ps = 2 9 -> ANSI text locator (i.e., DEC Locator mode). 296CSI > Ps c 297 Send Device Attributes (Secondary DA). 298 Ps = 0 or omitted -> request the terminal's identification 299 code. The response depends on the decTerminalID resource set- 300 ting. It should apply only to VT220 and up, but xterm extends 301 this to VT100. 302 -> CSI > Pp ; Pv ; Pc c 303 where Pp denotes the terminal type 304 Pp = 0 -> ``VT100''. 305 Pp = 1 -> ``VT220''. 306 and Pv is the firmware version (for xterm, this was originally 307 the XFree86 patch number, starting with 95). In a DEC termi- 308 nal, Pc indicates the ROM cartridge registration number and is 309 always zero. 310CSI Pm d Line Position Absolute [row] (default = [1,column]) (VPA). 311CSI Ps ; Ps f 312 Horizontal and Vertical Position [row;column] (default = 313 [1,1]) (HVP). 314CSI Ps g Tab Clear (TBC). 315 Ps = 0 -> Clear Current Column (default). 316 Ps = 3 -> Clear All. 317CSI Pm h Set Mode (SM). 318 Ps = 2 -> Keyboard Action Mode (AM). 319 Ps = 4 -> Insert Mode (IRM). 320 Ps = 1 2 -> Send/receive (SRM). 321 Ps = 2 0 -> Automatic Newline (LNM). 322CSI ? Pm h 323 DEC Private Mode Set (DECSET). 324 Ps = 1 -> Application Cursor Keys (DECCKM). 325 Ps = 2 -> Designate USASCII for character sets G0-G3 326 (DECANM), and set VT100 mode. 327 Ps = 3 -> 132 Column Mode (DECCOLM). 328 Ps = 4 -> Smooth (Slow) Scroll (DECSCLM). 329 Ps = 5 -> Reverse Video (DECSCNM). 330 Ps = 6 -> Origin Mode (DECOM). 331 Ps = 7 -> Wraparound Mode (DECAWM). 332 Ps = 8 -> Auto-repeat Keys (DECARM). 333 Ps = 9 -> Send Mouse X & Y on button press. See the sec- 334 tion Mouse Tracking. 335 Ps = 1 0 -> Show toolbar (rxvt). 336 Ps = 1 2 -> Start Blinking Cursor (att610). 337 Ps = 1 8 -> Print form feed (DECPFF). 338 Ps = 1 9 -> Set print extent to full screen (DECPEX). 339 Ps = 2 5 -> Show Cursor (DECTCEM). 340 Ps = 3 0 -> Show scrollbar (rxvt). 341 Ps = 3 5 -> Enable font-shifting functions (rxvt). 342 Ps = 3 8 -> Enter Tektronix Mode (DECTEK). 343 Ps = 4 0 -> Allow 80 -> 132 Mode. 344 Ps = 4 1 -> more(1) fix (see curses resource). 345 Ps = 4 2 -> Enable Nation Replacement Character sets (DECN- 346 RCM). 347 Ps = 4 4 -> Turn On Margin Bell. 348 Ps = 4 5 -> Reverse-wraparound Mode. 349 Ps = 4 6 -> Start Logging. This is normally disabled by a 350 compile-time option. 351 Ps = 4 7 -> Use Alternate Screen Buffer. (This may be dis- 352 abled by the titeInhibit resource). 353 Ps = 6 6 -> Application keypad (DECNKM). 354 Ps = 6 7 -> Backarrow key sends backspace (DECBKM). 355 Ps = 1 0 0 0 -> Send Mouse X & Y on button press and 356 release. See the section Mouse Tracking. 357 Ps = 1 0 0 1 -> Use Hilite Mouse Tracking. 358 Ps = 1 0 0 2 -> Use Cell Motion Mouse Tracking. 359 Ps = 1 0 0 3 -> Use All Motion Mouse Tracking. 360 Ps = 1 0 0 4 -> Send FocusIn/FocusOut events. 361 Ps = 1 0 0 5 -> Enable Extended Mouse Mode. 362 Ps = 1 0 1 0 -> Scroll to bottom on tty output (rxvt). 363 Ps = 1 0 1 1 -> Scroll to bottom on key press (rxvt). 364 Ps = 1 0 3 4 -> Interpret "meta" key, sets eighth bit. 365 (enables the eightBitInput resource). 366 Ps = 1 0 3 5 -> Enable special modifiers for Alt and Num- 367 Lock keys. (This enables the numLock resource). 368 Ps = 1 0 3 6 -> Send ESC when Meta modifies a key. (This 369 enables the metaSendsEscape resource). 370 Ps = 1 0 3 7 -> Send DEL from the editing-keypad Delete 371 key. 372 Ps = 1 0 3 9 -> Send ESC when Alt modifies a key. (This 373 enables the altSendsEscape resource). 374 Ps = 1 0 4 0 -> Keep selection even if not highlighted. 375 (This enables the keepSelection resource). 376 Ps = 1 0 4 1 -> Use the CLIPBOARD selection. (This enables 377 the selectToClipboard resource). 378 Ps = 1 0 4 2 -> Enable Urgency window manager hint when 379 Control-G is received. (This enables the bellIsUrgent 380 resource). 381 Ps = 1 0 4 3 -> Enable raising of the window when Control-G 382 is received. (enables the popOnBell resource). 383 Ps = 1 0 4 7 -> Use Alternate Screen Buffer. (This may be 384 disabled by the titeInhibit resource). 385 Ps = 1 0 4 8 -> Save cursor as in DECSC. (This may be dis- 386 abled by the titeInhibit resource). 387 Ps = 1 0 4 9 -> Save cursor as in DECSC and use Alternate 388 Screen Buffer, clearing it first. (This may be disabled by 389 the titeInhibit resource). This combines the effects of the 1 390 0 4 7 and 1 0 4 8 modes. Use this with terminfo-based 391 applications rather than the 4 7 mode. 392 Ps = 1 0 5 0 -> Set terminfo/termcap function-key mode. 393 Ps = 1 0 5 1 -> Set Sun function-key mode. 394 Ps = 1 0 5 2 -> Set HP function-key mode. 395 Ps = 1 0 5 3 -> Set SCO function-key mode. 396 Ps = 1 0 6 0 -> Set legacy keyboard emulation (X11R6). 397 Ps = 1 0 6 1 -> Set VT220 keyboard emulation. 398 Ps = 2 0 0 4 -> Set bracketed paste mode. 399CSI Pm i Media Copy (MC). 400 Ps = 0 -> Print screen (default). 401 Ps = 4 -> Turn off printer controller mode. 402 Ps = 5 -> Turn on printer controller mode. 403CSI ? Pm i 404 Media Copy (MC, DEC-specific). 405 Ps = 1 -> Print line containing cursor. 406 Ps = 4 -> Turn off autoprint mode. 407 Ps = 5 -> Turn on autoprint mode. 408 Ps = 1 0 -> Print composed display, ignores DECPEX. 409 Ps = 1 1 -> Print all pages. 410CSI Pm l Reset Mode (RM). 411 Ps = 2 -> Keyboard Action Mode (AM). 412 Ps = 4 -> Replace Mode (IRM). 413 Ps = 1 2 -> Send/receive (SRM). 414 Ps = 2 0 -> Normal Linefeed (LNM). 415CSI ? Pm l 416 DEC Private Mode Reset (DECRST). 417 Ps = 1 -> Normal Cursor Keys (DECCKM). 418 Ps = 2 -> Designate VT52 mode (DECANM). 419 Ps = 3 -> 80 Column Mode (DECCOLM). 420 Ps = 4 -> Jump (Fast) Scroll (DECSCLM). 421 Ps = 5 -> Normal Video (DECSCNM). 422 Ps = 6 -> Normal Cursor Mode (DECOM). 423 Ps = 7 -> No Wraparound Mode (DECAWM). 424 Ps = 8 -> No Auto-repeat Keys (DECARM). 425 Ps = 9 -> Don't send Mouse X & Y on button press. 426 Ps = 1 0 -> Hide toolbar (rxvt). 427 Ps = 1 2 -> Stop Blinking Cursor (att610). 428 Ps = 1 8 -> Don't print form feed (DECPFF). 429 Ps = 1 9 -> Limit print to scrolling region (DECPEX). 430 Ps = 2 5 -> Hide Cursor (DECTCEM). 431 Ps = 3 0 -> Don't show scrollbar (rxvt). 432 Ps = 3 5 -> Disable font-shifting functions (rxvt). 433 Ps = 4 0 -> Disallow 80 -> 132 Mode. 434 Ps = 4 1 -> No more(1) fix (see curses resource). 435 Ps = 4 2 -> Disable Nation Replacement Character sets (DEC- 436 NRCM). 437 Ps = 4 4 -> Turn Off Margin Bell. 438 Ps = 4 5 -> No Reverse-wraparound Mode. 439 Ps = 4 6 -> Stop Logging. (This is normally disabled by a 440 compile-time option). 441 Ps = 4 7 -> Use Normal Screen Buffer. 442 Ps = 6 6 -> Numeric keypad (DECNKM). 443 Ps = 6 7 -> Backarrow key sends delete (DECBKM). 444 Ps = 1 0 0 0 -> Don't send Mouse X & Y on button press and 445 release. See the section Mouse Tracking. 446 Ps = 1 0 0 1 -> Don't use Hilite Mouse Tracking. 447 Ps = 1 0 0 2 -> Don't use Cell Motion Mouse Tracking. 448 Ps = 1 0 0 3 -> Don't use All Motion Mouse Tracking. 449 Ps = 1 0 0 4 -> Don't send FocusIn/FocusOut events. 450 Ps = 1 0 0 5 -> Disable Extended Mouse Mode. 451 Ps = 1 0 1 0 -> Don't scroll to bottom on tty output 452 (rxvt). 453 Ps = 1 0 1 1 -> Don't scroll to bottom on key press (rxvt). 454 Ps = 1 0 3 4 -> Don't interpret "meta" key. (This disables 455 the eightBitInput resource). 456 Ps = 1 0 3 5 -> Disable special modifiers for Alt and Num- 457 Lock keys. (This disables the numLock resource). 458 Ps = 1 0 3 6 -> Don't send ESC when Meta modifies a key. 459 (This disables the metaSendsEscape resource). 460 Ps = 1 0 3 7 -> Send VT220 Remove from the editing-keypad 461 Delete key. 462 Ps = 1 0 3 9 -> Don't send ESC when Alt modifies a key. 463 (This disables the altSendsEscape resource). 464 Ps = 1 0 4 0 -> Do not keep selection when not highlighted. 465 (This disables the keepSelection resource). 466 Ps = 1 0 4 1 -> Use the PRIMARY selection. (This disables 467 the selectToClipboard resource). 468 Ps = 1 0 4 2 -> Disable Urgency window manager hint when 469 Control-G is received. (This disables the bellIsUrgent 470 resource). 471 Ps = 1 0 4 3 -> Disable raising of the window when Control- 472 G is received. (This disables the popOnBell resource). 473 Ps = 1 0 4 7 -> Use Normal Screen Buffer, clearing screen 474 first if in the Alternate Screen. (This may be disabled by 475 the titeInhibit resource). 476 Ps = 1 0 4 8 -> Restore cursor as in DECRC. (This may be 477 disabled by the titeInhibit resource). 478 Ps = 1 0 4 9 -> Use Normal Screen Buffer and restore cursor 479 as in DECRC. (This may be disabled by the titeInhibit 480 resource). This combines the effects of the 1 0 4 7 and 1 0 481 4 8 modes. Use this with terminfo-based applications rather 482 than the 4 7 mode. 483 Ps = 1 0 5 0 -> Reset terminfo/termcap function-key mode. 484 Ps = 1 0 5 1 -> Reset Sun function-key mode. 485 Ps = 1 0 5 2 -> Reset HP function-key mode. 486 Ps = 1 0 5 3 -> Reset SCO function-key mode. 487 Ps = 1 0 6 0 -> Reset legacy keyboard emulation (X11R6). 488 Ps = 1 0 6 1 -> Reset keyboard emulation to Sun/PC style. 489 Ps = 2 0 0 4 -> Reset bracketed paste mode. 490CSI Pm m Character Attributes (SGR). 491 Ps = 0 -> Normal (default). 492 Ps = 1 -> Bold. 493 Ps = 4 -> Underlined. 494 Ps = 5 -> Blink (appears as Bold). 495 Ps = 7 -> Inverse. 496 Ps = 8 -> Invisible, i.e., hidden (VT300). 497 Ps = 2 2 -> Normal (neither bold nor faint). 498 Ps = 2 4 -> Not underlined. 499 Ps = 2 5 -> Steady (not blinking). 500 Ps = 2 7 -> Positive (not inverse). 501 Ps = 2 8 -> Visible, i.e., not hidden (VT300). 502 Ps = 3 0 -> Set foreground color to Black. 503 Ps = 3 1 -> Set foreground color to Red. 504 Ps = 3 2 -> Set foreground color to Green. 505 Ps = 3 3 -> Set foreground color to Yellow. 506 Ps = 3 4 -> Set foreground color to Blue. 507 Ps = 3 5 -> Set foreground color to Magenta. 508 Ps = 3 6 -> Set foreground color to Cyan. 509 Ps = 3 7 -> Set foreground color to White. 510 Ps = 3 9 -> Set foreground color to default (original). 511 Ps = 4 0 -> Set background color to Black. 512 Ps = 4 1 -> Set background color to Red. 513 Ps = 4 2 -> Set background color to Green. 514 Ps = 4 3 -> Set background color to Yellow. 515 Ps = 4 4 -> Set background color to Blue. 516 Ps = 4 5 -> Set background color to Magenta. 517 Ps = 4 6 -> Set background color to Cyan. 518 Ps = 4 7 -> Set background color to White. 519 Ps = 4 9 -> Set background color to default (original). 520 521 If 16-color support is compiled, the following apply. Assume 522 that xterm's resources are set so that the ISO color codes are 523 the first 8 of a set of 16. Then the aixterm colors are the 524 bright versions of the ISO colors: 525 Ps = 9 0 -> Set foreground color to Black. 526 Ps = 9 1 -> Set foreground color to Red. 527 Ps = 9 2 -> Set foreground color to Green. 528 Ps = 9 3 -> Set foreground color to Yellow. 529 Ps = 9 4 -> Set foreground color to Blue. 530 Ps = 9 5 -> Set foreground color to Magenta. 531 Ps = 9 6 -> Set foreground color to Cyan. 532 Ps = 9 7 -> Set foreground color to White. 533 Ps = 1 0 0 -> Set background color to Black. 534 Ps = 1 0 1 -> Set background color to Red. 535 Ps = 1 0 2 -> Set background color to Green. 536 Ps = 1 0 3 -> Set background color to Yellow. 537 Ps = 1 0 4 -> Set background color to Blue. 538 Ps = 1 0 5 -> Set background color to Magenta. 539 Ps = 1 0 6 -> Set background color to Cyan. 540 Ps = 1 0 7 -> Set background color to White. 541 542 If xterm is compiled with the 16-color support disabled, it 543 supports the following, from rxvt: 544 Ps = 1 0 0 -> Set foreground and background color to 545 default. 546 547 If 88- or 256-color support is compiled, the following apply. 548 Ps = 3 8 ; 5 ; Ps -> Set foreground color to the second 549 Ps. 550 Ps = 4 8 ; 5 ; Ps -> Set background color to the second 551 Ps. 552 553CSI > Ps; Ps m 554 Set or reset resource-values used by xterm to decide whether 555 to construct escape sequences holding information about the 556 modifiers pressed with a given key. The first parameter iden- 557 tifies the resource to set/reset. The second parameter is the 558 value to assign to the resource. If the second parameter is 559 omitted, the resource is reset to its initial value. 560 Ps = 1 -> modifyCursorKeys. 561 Ps = 2 -> modifyFunctionKeys. 562 Ps = 4 -> modifyOtherKeys. 563 If no parameters are given, all resources are reset to their 564 initial values. 565CSI Ps n Device Status Report (DSR). 566 Ps = 5 -> Status Report. Result (``OK'') is 567 CSI 0 n 568 Ps = 6 -> Report Cursor Position (CPR) [row;column]. 569 Result is 570 CSI r ; c R 571CSI > Ps n 572 Disable modifiers which may be enabled via the CSI > Ps; Ps m 573 sequence. This corresponds to a resource value of "-1", which 574 cannot be set with the other sequence. The parameter identi- 575 fies the resource to be disabled: 576 Ps = 1 -> modifyCursorKeys. 577 Ps = 2 -> modifyFunctionKeys. 578 Ps = 4 -> modifyOtherKeys. 579 If the parameter is omitted, modifyFunctionKeys is disabled. 580 When modifyFunctionKeys is disabled, xterm uses the modifier 581 keys to make an extended sequence of functions rather than 582 adding a parameter to each function key to denote the modi- 583 fiers. 584CSI ? Ps n 585 Device Status Report (DSR, DEC-specific). 586 Ps = 6 -> Report Cursor Position (CPR) [row;column] as CSI 587 ? r ; c R (assumes page is zero). 588 Ps = 1 5 -> Report Printer status as CSI ? 1 0 n (ready). 589 or CSI ? 1 1 n (not ready). 590 Ps = 2 5 -> Report UDK status as CSI ? 2 0 n (unlocked) 591 or CSI ? 2 1 n (locked). 592 Ps = 2 6 -> Report Keyboard status as 593 CSI ? 2 7 ; 1 ; 0 ; 0 n (North American). 594 The last two parameters apply to VT400 & up, and denote key- 595 board ready and LK01 respectively. 596 Ps = 5 3 -> Report Locator status as 597 CSI ? 5 3 n Locator available, if compiled-in, or 598 CSI ? 5 0 n No Locator, if not. 599CSI > Ps p 600 Set resource value pointerMode. This is used by xterm to 601 decide whether to hide the pointer cursor as the user types. 602 Valid values for the parameter: 603 Ps = 0 -> never hide the pointer. 604 Ps = 1 -> hide if the mouse tracking mode is not enabled. 605 Ps = 2 -> always hide the pointer. If no parameter is 606 given, xterm uses the default, which is 1 . 607CSI ! p Soft terminal reset (DECSTR). 608CSI Ps$ p 609 Request ANSI mode (DECRQM). For VT300 and up, reply is 610 CSI Ps; Pm$ y 611 where Ps is the mode number as in RM, and Pm is the mode 612 value: 613 0 - not recognized 614 1 - set 615 2 - reset 616 3 - permanently set 617 4 - permanently reset 618CSI ? Ps$ p 619 Request DEC private mode (DECRQM). For VT300 and up, reply is 620 CSI ? Ps; Pm$ p 621 where Ps is the mode number as in DECSET, Pm is the mode value 622 as in the ANSI DECRQM. 623CSI Ps ; Ps " p 624 Set conformance level (DECSCL). Valid values for the first 625 parameter: 626 Ps = 6 1 -> VT100. 627 Ps = 6 2 -> VT200. 628 Ps = 6 3 -> VT300. 629 Valid values for the second parameter: 630 Ps = 0 -> 8-bit controls. 631 Ps = 1 -> 7-bit controls (always set for VT100). 632 Ps = 2 -> 8-bit controls. 633CSI Ps q Load LEDs (DECLL). 634 Ps = 0 -> Clear all LEDS (default). 635 Ps = 1 -> Light Num Lock. 636 Ps = 2 -> Light Caps Lock. 637 Ps = 3 -> Light Scroll Lock. 638 Ps = 2 1 -> Extinguish Num Lock. 639 Ps = 2 2 -> Extinguish Caps Lock. 640 Ps = 2 3 -> Extinguish Scroll Lock. 641CSI Ps SP q 642 Set cursor style (DECSCUSR, VT520). 643 Ps = 0 -> blinking block. 644 Ps = 1 -> blinking block (default). 645 Ps = 2 -> steady block. 646 Ps = 3 -> blinking underline. 647 Ps = 4 -> steady underline. 648CSI Ps " q 649 Select character protection attribute (DECSCA). Valid values 650 for the parameter: 651 Ps = 0 -> DECSED and DECSEL can erase (default). 652 Ps = 1 -> DECSED and DECSEL cannot erase. 653 Ps = 2 -> DECSED and DECSEL can erase. 654CSI Ps ; Ps r 655 Set Scrolling Region [top;bottom] (default = full size of win- 656 dow) (DECSTBM). 657CSI ? Pm r 658 Restore DEC Private Mode Values. The value of Ps previously 659 saved is restored. Ps values are the same as for DECSET. 660CSI Pt; Pl; Pb; Pr; Ps$ r 661 Change Attributes in Rectangular Area (DECCARA), VT400 and up. 662 Pt; Pl; Pb; Pr denotes the rectangle. 663 Ps denotes the SGR attributes to change: 0, 1, 4, 5, 7. 664CSI s Save cursor (ANSI.SYS). 665CSI ? Pm s 666 Save DEC Private Mode Values. Ps values are the same as for 667 DECSET. 668CSI Ps ; Ps ; Ps t 669 Window manipulation (from dtterm, as well as extensions). 670 These controls may be disabled using the allowWindowOps 671 resource. Valid values for the first (and any additional 672 parameters) are: 673 Ps = 1 -> De-iconify window. 674 Ps = 2 -> Iconify window. 675 Ps = 3 ; x ; y -> Move window to [x, y]. 676 Ps = 4 ; height ; width -> Resize the xterm window to 677 height and width in pixels. 678 Ps = 5 -> Raise the xterm window to the front of the stack- 679 ing order. 680 Ps = 6 -> Lower the xterm window to the bottom of the 681 stacking order. 682 Ps = 7 -> Refresh the xterm window. 683 Ps = 8 ; height ; width -> Resize the text area to 684 [height;width] in characters. 685 Ps = 9 ; 0 -> Restore maximized window. 686 Ps = 9 ; 1 -> Maximize window (i.e., resize to screen 687 size). 688 Ps = 1 0 ; 0 -> Undo full-screen mode. 689 Ps = 1 0 ; 1 -> Change to full-screen. 690 Ps = 1 1 -> Report xterm window state. If the xterm window 691 is open (non-iconified), it returns CSI 1 t . If the xterm 692 window is iconified, it returns CSI 2 t . 693 Ps = 1 3 -> Report xterm window position. Result is CSI 3 694 ; x ; y t 695 Ps = 1 4 -> Report xterm window in pixels. Result is CSI 696 4 ; height ; width t 697 Ps = 1 8 -> Report the size of the text area in characters. 698 Result is CSI 8 ; height ; width t 699 Ps = 1 9 -> Report the size of the screen in characters. 700 Result is CSI 9 ; height ; width t 701 Ps = 2 0 -> Report xterm window's icon label. Result is 702 OSC L label ST 703 Ps = 2 1 -> Report xterm window's title. Result is OSC l 704 label ST 705 Ps = 2 2 ; 0 -> Save xterm icon and window title on 706 stack. 707 Ps = 2 2 ; 1 -> Save xterm icon title on stack. 708 Ps = 2 2 ; 2 -> Save xterm window title on stack. 709 Ps = 2 3 ; 0 -> Restore xterm icon and window title from 710 stack. 711 Ps = 2 3 ; 1 -> Restore xterm icon title from stack. 712 Ps = 2 3 ; 2 -> Restore xterm window title from stack. 713 Ps >= 2 4 -> Resize to Ps lines (DECSLPP). 714CSI Pt; Pl; Pb; Pr; Ps$ t 715 Reverse Attributes in Rectangular Area (DECRARA), VT400 and 716 up. 717 Pt; Pl; Pb; Pr denotes the rectangle. 718 Ps denotes the attributes to reverse, i.e., 1, 4, 5, 7. 719CSI > Ps; Ps t 720 Set one or more features of the title modes. Each parameter 721 enables a single feature. 722 Ps = 0 -> Set window/icon labels using hexadecimal. 723 Ps = 1 -> Query window/icon labels using hexadecimal. 724 Ps = 2 -> Set window/icon labels using UTF-8. 725 Ps = 3 -> Query window/icon labels using UTF-8. (See dis- 726 cussion of "Title Modes") 727CSI Ps SP t 728 Set warning-bell volume (DECSWBV, VT520). 729 Ps = 0 or 1 -> off. 730 Ps = 2 , 3 or 4 -> low. 731 Ps = 5 , 6 , 7 , or 8 -> high. 732CSI u Restore cursor (ANSI.SYS). 733CSI Ps SP u 734 Set margin-bell volume (DECSMBV, VT520). 735 Ps = 1 -> off. 736 Ps = 2 , 3 or 4 -> low. 737 Ps = 0 , 5 , 6 , 7 , or 8 -> high. 738CSI Pt; Pl; Pb; Pr; Pp; Pt; Pl; Pp$ v 739 Copy Rectangular Area (DECCRA, VT400 and up). 740 Pt; Pl; Pb; Pr denotes the rectangle. 741 Pp denotes the source page. 742 Pt; Pl denotes the target location. 743 Pp denotes the target page. 744CSI Pt ; Pl ; Pb ; Pr ' w 745 Enable Filter Rectangle (DECEFR), VT420 and up. 746 Parameters are [top;left;bottom;right]. 747 Defines the coordinates of a filter rectangle and activates 748 it. Anytime the locator is detected outside of the filter 749 rectangle, an outside rectangle event is generated and the 750 rectangle is disabled. Filter rectangles are always treated 751 as "one-shot" events. Any parameters that are omitted default 752 to the current locator position. If all parameters are omit- 753 ted, any locator motion will be reported. DECELR always can- 754 cels any prevous rectangle definition. 755CSI Ps x Request Terminal Parameters (DECREQTPARM). 756 if Ps is a "0" (default) or "1", and xterm is emulating VT100, 757 the control sequence elicits a response of the same form whose 758 parameters describe the terminal: 759 Ps -> the given Ps incremented by 2. 760 Pn = 1 <- no parity. 761 Pn = 1 <- eight bits. 762 Pn = 1 <- 2 8 transmit 38.4k baud. 763 Pn = 1 <- 2 8 receive 38.4k baud. 764 Pn = 1 <- clock multiplier. 765 Pn = 0 <- STP flags. 766CSI Ps x Select Attribute Change Extent (DECSACE). 767 Ps = 0 -> from start to end position, wrapped. 768 Ps = 1 -> from start to end position, wrapped. 769 Ps = 2 -> rectangle (exact). 770CSI Pc; Pt; Pl; Pb; Pr$ x 771 Fill Rectangular Area (DECFRA), VT420 and up. 772 Pc is the character to use. 773 Pt; Pl; Pb; Pr denotes the rectangle. 774CSI Ps ; Pu ' z 775 Enable Locator Reporting (DECELR). 776 Valid values for the first parameter: 777 Ps = 0 -> Locator disabled (default). 778 Ps = 1 -> Locator enabled. 779 Ps = 2 -> Locator enabled for one report, then disabled. 780 The second parameter specifies the coordinate unit for locator 781 reports. 782 Valid values for the second parameter: 783 Pu = 0 <- or omitted -> default to character cells. 784 Pu = 1 <- device physical pixels. 785 Pu = 2 <- character cells. 786CSI Pt; Pl; Pb; Pr$ z 787 Erase Rectangular Area (DECERA), VT400 and up. 788 Pt; Pl; Pb; Pr denotes the rectangle. 789CSI Pm ' { 790 Select Locator Events (DECSLE). 791 Valid values for the first (and any additional parameters) 792 are: 793 Ps = 0 -> only respond to explicit host requests (DECRQLP). 794 (This is default). It also cancels any filter 795 rectangle. 796 Ps = 1 -> report button down transitions. 797 Ps = 2 -> do not report button down transitions. 798 Ps = 3 -> report button up transitions. 799 Ps = 4 -> do not report button up transitions. 800CSI Pt; Pl; Pb; Pr$ { 801 Selective Erase Rectangular Area (DECSERA), VT400 and up. 802 Pt; Pl; Pb; Pr denotes the rectangle. 803CSI Ps ' | 804 Request Locator Position (DECRQLP). 805 Valid values for the parameter are: 806 Ps = 0 , 1 or omitted -> transmit a single DECLRP locator 807 report. 808 809 If Locator Reporting has been enabled by a DECELR, xterm will 810 respond with a DECLRP Locator Report. This report is also 811 generated on button up and down events if they have been 812 enabled with a DECSLE, or when the locator is detected outside 813 of a filter rectangle, if filter rectangles have been enabled 814 with a DECEFR. 815 816 -> CSI Pe ; Pb ; Pr ; Pc ; Pp & w 817 818 Parameters are [event;button;row;column;page]. 819 Valid values for the event: 820 Pe = 0 -> locator unavailable - no other parameters sent. 821 Pe = 1 -> request - xterm received a DECRQLP. 822 Pe = 2 -> left button down. 823 Pe = 3 -> left button up. 824 Pe = 4 -> middle button down. 825 Pe = 5 -> middle button up. 826 Pe = 6 -> right button down. 827 Pe = 7 -> right button up. 828 Pe = 8 -> M4 button down. 829 Pe = 9 -> M4 button up. 830 Pe = 1 0 -> locator outside filter rectangle. 831 ``button'' parameter is a bitmask indicating which buttons are 832 pressed: 833 Pb = 0 <- no buttons down. 834 Pb & 1 <- right button down. 835 Pb & 2 <- middle button down. 836 Pb & 4 <- left button down. 837 Pb & 8 <- M4 button down. 838 ``row'' and ``column'' parameters are the coordinates of the 839 locator position in the xterm window, encoded as ASCII deci- 840 mal. 841 The ``page'' parameter is not used by xterm, and will be omit- 842 ted. 843 844Operating System Controls 845OSC Ps ; Pt ST 846OSC Ps ; Pt BEL 847 Set Text Parameters. For colors and font, if Pt is a "?", the 848 control sequence elicits a response which consists of the con- 849 trol sequence which would set the corresponding value. The 850 dtterm control sequences allow you to determine the icon name 851 and window title. 852 Ps = 0 -> Change Icon Name and Window Title to Pt. 853 Ps = 1 -> Change Icon Name to Pt. 854 Ps = 2 -> Change Window Title to Pt. 855 Ps = 3 -> Set X property on top-level window. Pt should be 856 in the form "prop=value", or just "prop" to delete the prop- 857 erty 858 Ps = 4 ; c ; spec -> Change Color Number c to the color 859 specified by spec. This can be a name or RGB specification as 860 per XParseColor. Any number of c name pairs may be given. 861 The color numbers correspond to the ANSI colors 0-7, their 862 bright versions 8-15, and if supported, the remainder of the 863 88-color or 256-color table. 864 865 If a "?" is given rather than a name or RGB specification, 866 xterm replies with a control sequence of the same form which 867 can be used to set the corresponding color. Because more than 868 one pair of color number and specification can be given in one 869 control sequence, xterm can make more than one reply. 870 871 Ps = 5 ; c ; spec -> Change Special Color Number c to the 872 color specified by spec. This can be a name or RGB specifica- 873 tion as per XParseColor. Any number of c name pairs may be 874 given. The special colors can also be set by adding the maxi- 875 mum number of colors to these codes in an OSC 4 control: 876 877 Pc = 0 <- resource colorBD (BOLD). 878 Pc = 1 <- resource colorUL (UNDERLINE). 879 Pc = 2 <- resource colorBL (BLINK). 880 Pc = 3 <- resource colorRV (REVERSE). 881 882 The 10 colors (below) which may be set or queried using 1 0 883 through 1 9 are denoted dynamic colors, since the correspond- 884 ing control sequences were the first means for setting xterm's 885 colors dynamically, i.e., after it was started. They are not 886 the same as the ANSI colors. These controls may be disabled 887 using the allowColorOps resource. At least one parameter is 888 expected for Pt. Each successive parameter changes the next 889 color in the list. The value of Ps tells the starting point 890 in the list. The colors are specified by name or RGB specifi- 891 cation as per XParseColor. 892 893 If a "?" is given rather than a name or RGB specification, 894 xterm replies with a control sequence of the same form which 895 can be used to set the corresponding dynamic color. Because 896 more than one pair of color number and specification can be 897 given in one control sequence, xterm can make more than one 898 reply. 899 900 Ps = 1 0 -> Change VT100 text foreground color to Pt. 901 Ps = 1 1 -> Change VT100 text background color to Pt. 902 Ps = 1 2 -> Change text cursor color to Pt. 903 Ps = 1 3 -> Change mouse foreground color to Pt. 904 Ps = 1 4 -> Change mouse background color to Pt. 905 Ps = 1 5 -> Change Tektronix foreground color to Pt. 906 Ps = 1 6 -> Change Tektronix background color to Pt. 907 Ps = 1 7 -> Change highlight background color to Pt. 908 Ps = 1 8 -> Change Tektronix cursor color to Pt. 909 Ps = 1 9 -> Change highlight foreground color to Pt. 910 911 Ps = 4 6 -> Change Log File to Pt. (This is normally dis- 912 abled by a compile-time option). 913 914 Ps = 5 0 -> Set Font to Pt. These controls may be disabled 915 using the allowFontOps resource. If Pt begins with a "#", 916 index in the font menu, relative (if the next character is a 917 plus or minus sign) or absolute. A number is expected but not 918 required after the sign (the default is the current entry for 919 relative, zero for absolute indexing). 920 The same rule (plus or minus sign, optional number) is used 921 when querying the font. The remainder of Pt is ignored. 922 A font can be specified after a "#" index expression, by 923 adding a space and then the font specifier. 924 If the "TrueType Fonts" menu entry is set (the renderFont 925 resource), then this control sets/queries the faceName 926 resource. 927 928 Ps = 5 1 (reserved for Emacs shell). 929 930 Ps = 5 2 -> Manipulate Selection Data. These controls may 931 be disabled using the allowWindowOps resource. The parameter 932 Pt is parsed as 933 Pc; Pd 934 The first, Pc, may contain zero or more characters from the 935 set c p s 0 1 2 3 4 5 6 7 . It is used to construct 936 a list of selection parameters for clipboard, primary, select, 937 or cut buffers 0 through 7 respectively, in the order given. 938 If the parameter is empty, xterm uses s 0 , to specify the 939 configurable primary/clipboard selection and cut buffer 0. 940 The second parameter, Pd, gives the selection data. Normally 941 this is a string encoded in base64. The data becomes the new 942 selection, which is then available for pasting by other appli- 943 cations. 944 If the second parameter is a ? , xterm replies to the host 945 with the selection data encoded using the same protocol. 946 If the second parameter is neither a base64 string nor ? , 947 then the selection is cleared. 948 949 Ps = 1 0 4 ; c -> Reset Color Number c. It is reset to the 950 color specified by the corresponding X resource. Any number 951 of c parameters may be given. These parameters correspond to 952 the ANSI colors 0-7, their bright versions 8-15, and if sup- 953 ported, the remainder of the 88-color or 256-color table. If 954 no parameters are given, the entire table will be reset. 955 956 Ps = 1 0 5 ; c -> Reset Special Color Number c. It is 957 reset to the color specified by the corresponding X resource. 958 Any number of c parameters may be given. These parameters 959 correspond to the special colors which can be set using an OSC 960 5 control (or by adding the maximum number of colors using an 961 OSC 4 control). 962 963 The dynamic colors can also be reset to their default 964 (resource) values: 965 Ps = 1 1 0 -> Reset VT100 text foreground color. 966 Ps = 1 1 1 -> Reset VT100 text background color. 967 Ps = 1 1 2 -> Reset text cursor color. 968 Ps = 1 1 3 -> Reset mouse foreground color. 969 Ps = 1 1 4 -> Reset mouse background color. 970 Ps = 1 1 5 -> Reset Tektronix foreground color. 971 Ps = 1 1 6 -> Reset Tektronix background color. 972 Ps = 1 1 7 -> Reset highlight color. 973 Ps = 1 1 8 -> Reset Tektronix cursor color. 974 975Privacy Message 976PM Pt ST xterm implements no PM functions; Pt is ignored. Pt need not 977 be printable characters. 978 979Alt and Meta Keys 980Many keyboards have keys labeled "Alt". Few have keys labeled "Meta". 981However, xterm's default translations use the Meta modifier. Common 982keyboard configurations assign the Meta modifier to an "Alt" key. By 983using xmodmap one may have the modifier assigned to a different key, and 984have "real" alt and meta keys. Here is an example: 985 986 ! put meta on mod3 to distinguish it from alt 987 keycode 64 = Alt_L 988 clear mod1 989 add mod1 = Alt_L 990 keycode 115 = Meta_L 991 clear mod3 992 add mod3 = Meta_L 993 994 995The metaSendsEscape resource (and altSendsEscape if altIsNotMeta is set) 996can be used to control the way the Meta modifier applies to ordinary 997keys unless the modifyOtherKeys resource is set: 998 - prefix a key with the ESC character. 999 - shift the key from codes 0-127 to 128-255 by adding 128. 1000 1001The table shows the result for a given character "x" with modifiers 1002according to the default translations with the resources set on or off. 1003This assumes altIsNotMeta is set: 1004 1005 ----------------------------------------------------------- 1006 key altSendsEscape metaSendsEscape result 1007 ----------------------------------------------------------- 1008 x off off x 1009 Meta-x off off shift 1010 Alt-x off off shift 1011 Alt+Meta-x off off shift 1012 x ON off x 1013 Meta-x ON off shift 1014 Alt-x ON off ESC x 1015 Alt+Meta-x ON off ESC shift 1016 x off ON x 1017 Meta-x off ON ESC x 1018 Alt-x off ON shift 1019 Alt+Meta-x off ON ESC shift 1020 x ON ON x 1021 Meta-x ON ON ESC x 1022 Alt-x ON ON ESC x 1023 Alt+Meta-x ON ON ESC x 1024 ----------------------------------------------------------- 1025 1026 1027PC-Style Function Keys 1028If xterm does minimal translation of the function keys, it usually does 1029this with a PC-style keyboard, so PC-style function keys result. Sun 1030keyboards are similar to PC keyboards. Both have cursor and scrolling 1031operations printed on the keypad, which duplicate the smaller cursor and 1032scrolling keypads. 1033 1034X does not predefine NumLock (used for VT220 keyboards) or Alt (used as 1035an extension for the Sun/PC keyboards) as modifiers. These keys are 1036recognized as modifiers when enabled by the numLock resource, or by the 1037"DECSET 1 0 3 5 " control sequence. 1038 1039The cursor keys transmit the following escape sequences depending on the 1040mode specified via the DECCKM escape sequence. 1041 1042 Key Normal Application 1043 -------------------------------------- 1044 Cursor Up CSI A SS3 A 1045 Cursor Down CSI B SS3 B 1046 Cursor Right CSI C SS3 C 1047 Cursor Left CSI D SS3 D 1048 -------------------------------------- 1049 1050The home- and end-keys (unlike PageUp and other keys also on the 6-key 1051editing keypad) are considered "cursor keys" by xterm. Their mode is 1052also controlled by the DECCKM escape sequence: 1053 1054 Key Normal Application 1055 ---------------------------------- 1056 Home CSI H SS3 H 1057 End CSI F SS3 F 1058 ---------------------------------- 1059 1060 1061The application keypad transmits the following escape sequences depend- 1062ing on the mode specified via the DECPNM and DECPAM escape sequences. 1063Use the NumLock key to override the application mode. 1064 1065Not all keys are present on the Sun/PC keypad (e.g., PF1, Tab), but are 1066supported by the program. 1067 1068 Key Numeric Application Terminfo Termcap 1069 -------------------------------------------------------------- 1070 Space SP SS3 SP - - 1071 Tab TAB SS3 I - - 1072 Enter CR SS3 M kent @8 1073 PF1 SS3 P SS3 P kf1 k1 1074 PF2 SS3 Q SS3 Q kf2 k2 1075 PF3 SS3 R SS3 R kf3 k3 1076 PF4 SS3 S SS3 S kf4 k4 1077 * (multiply) * SS3 j - - 1078 + (add) + SS3 k - - 1079 , (comma) , SS3 l - - 1080 - (minus) - SS3 m - - 1081 . (Delete) . CSI 3 ~ - - 1082 / (divide) / SS3 o - - 1083 0 (Insert) 0 CSI 2 ~ - - 1084 1 (End) 1 SS3 F kc1 K4 1085 2 (DownArrow) 2 CSI B - - 1086 3 (PageDown) 3 CSI 6 ~ kc3 K5 1087 4 (LeftArrow) 4 CSI D - - 1088 5 (Begin) 5 CSI E kb2 K2 1089 6 (RightArrow) 6 CSI C - - 1090 7 (Home) 7 SS3 H ka1 K1 1091 8 (UpArrow) 8 CSI A - - 1092 9 (PageUp) 9 CSI 5 ~ ka3 K3 1093 = (equal) = SS3 X - - 1094 -------------------------------------------------------------- 1095 1096They also provide 12 function keys, as well as a few other special-pur- 1097pose keys: 1098 1099 Key Escape Sequence 1100 --------------------------- 1101 F1 SS3 P 1102 F2 SS3 Q 1103 F3 SS3 R 1104 F4 SS3 S 1105 F5 CSI 1 5 ~ 1106 F6 CSI 1 7 ~ 1107 F7 CSI 1 8 ~ 1108 F8 CSI 1 9 ~ 1109 F9 CSI 2 0 ~ 1110 F10 CSI 2 1 ~ 1111 F11 CSI 2 3 ~ 1112 F12 CSI 2 4 ~ 1113 --------------------------- 1114 1115 1116Older versions of xterm implement different escape sequences for F1 1117through F4. These can be activated by setting the oldXtermFKeys 1118resource. However, since they do not correspond to any hardware termi- 1119nal, they have been deprecated. (The DEC VT220 reserves F1 through F5 1120for local functions such as Setup). 1121 1122 Key Escape Sequence 1123 --------------------------- 1124 F1 CSI 1 1 ~ 1125 F2 CSI 1 2 ~ 1126 F3 CSI 1 3 ~ 1127 F4 CSI 1 4 ~ 1128 --------------------------- 1129 1130In normal mode, i.e., a Sun/PC keyboard when the sunKeyboard resource is 1131false, xterm recognizes function key modifiers which are parameters 1132appended before the final character of the control sequence. 1133 1134 Code Modifiers 1135 --------------------------------- 1136 2 Shift 1137 3 Alt 1138 4 Shift + Alt 1139 5 Control 1140 6 Shift + Control 1141 7 Alt + Control 1142 8 Shift + Alt + Control 1143 --------------------------------- 1144 1145For example, shift-F5 would be sent as CSI 1 5 ; 2 ~ 1146 1147If the alwaysUseMods resource is set, the Meta modifier also is recog- 1148nized, making parameters 9 through 16. 1149 1150VT220-Style Function Keys 1151However, xterm is most useful as a DEC VT102 or VT220 emulator. Set the 1152sunKeyboard resource to true to force a Sun/PC keyboard to act like a 1153VT220 keyboard. 1154 1155The VT102/VT220 application keypad transmits unique escape sequences in 1156application mode, which are distinct from the cursor and scrolling key- 1157pad: 1158 1159 Key Numeric Application 1160 -------------------------------------- 1161 Space SP SS3 SP 1162 Tab TAB SS3 I 1163 Enter CR SS3 M 1164 PF1 SS3 P SS3 P 1165 PF2 SS3 Q SS3 Q 1166 PF3 SS3 R SS3 R 1167 PF4 SS3 S SS3 S 1168 * (multiply) * SS3 j 1169 + (add) + SS3 k 1170 , (comma) , SS3 l 1171 - (minus) - SS3 m 1172 . (period) . SS3 n 1173 / (divide) / SS3 o 1174 0 0 SS3 p 1175 1 1 SS3 q 1176 2 2 SS3 r 1177 3 3 SS3 s 1178 4 4 SS3 t 1179 5 5 SS3 u 1180 6 6 SS3 v 1181 7 7 SS3 w 1182 8 8 SS3 x 1183 9 9 SS3 y 1184 = (equal) = SS3 X 1185 -------------------------------------- 1186 1187The VT220 provides a 6-key editing keypad, which is analogous to that on 1188the PC keyboard. It is not affected by DECCKM or DECPNM/DECPAM: 1189 1190 Key Normal Application 1191 ---------------------------------- 1192 Insert CSI 2 ~ CSI 2 ~ 1193 Delete CSI 3 ~ CSI 3 ~ 1194 Home CSI 1 ~ CSI 1 ~ 1195 End CSI 4 ~ CSI 4 ~ 1196 PageUp CSI 5 ~ CSI 5 ~ 1197 PageDown CSI 6 ~ CSI 6 ~ 1198 ---------------------------------- 1199 1200The VT220 provides 8 additional function keys. With a Sun/PC keyboard, 1201access these keys by Control/F1 for F13, etc. 1202 1203 Key Escape Sequence 1204 --------------------------- 1205 F13 CSI 2 5 ~ 1206 F14 CSI 2 6 ~ 1207 F15 CSI 2 8 ~ 1208 F16 CSI 2 9 ~ 1209 F17 CSI 3 1 ~ 1210 F18 CSI 3 2 ~ 1211 F19 CSI 3 3 ~ 1212 F20 CSI 3 4 ~ 1213 --------------------------- 1214 1215 1216VT52-Style Function Keys 1217A VT52 does not have function keys, but it does have a numeric keypad 1218and cursor keys. They differ from the other emulations by the prefix. 1219Also, the cursor keys do not change: 1220 1221 Key Normal/Application 1222 ---------------------------------- 1223 Cursor Up ESC A 1224 Cursor Down ESC B 1225 Cursor Right ESC C 1226 Cursor Left ESC D 1227 ---------------------------------- 1228 1229The keypad is similar: 1230 1231 Key Numeric Application 1232 -------------------------------------- 1233 Space SP ESC ? SP 1234 Tab TAB ESC ? I 1235 Enter CR ESC ? M 1236 PF1 ESC P ESC P 1237 PF2 ESC Q ESC Q 1238 PF3 ESC R ESC R 1239 PF4 ESC S ESC S 1240 * (multiply) * ESC ? j 1241 + (add) + ESC ? k 1242 , (comma) , ESC ? l 1243 - (minus) - ESC ? m 1244 . (period) . ESC ? n 1245 / (divide) / ESC ? o 1246 0 0 ESC ? p 1247 1 1 ESC ? q 1248 2 2 ESC ? r 1249 3 3 ESC ? s 1250 4 4 ESC ? t 1251 5 5 ESC ? u 1252 6 6 ESC ? v 1253 7 7 ESC ? w 1254 8 8 ESC ? x 1255 9 9 ESC ? y 1256 = (equal) = ESC ? X 1257 -------------------------------------- 1258 1259 1260Sun-Style Function Keys 1261The xterm program provides support for Sun keyboards more directly, by a 1262menu toggle that causes it to send Sun-style function key codes rather 1263than VT220. Note, however, that the sun and VT100 emulations are not 1264really compatible. For example, their wrap-margin behavior differs. 1265 1266Only function keys are altered; keypad and cursor keys are the same. 1267The emulation responds identically. See the xterm-sun terminfo entry 1268for details. 1269 1270HP-Style Function Keys 1271Similarly, xterm can be compiled to support HP keyboards. See the 1272xterm-hp terminfo entry for details. 1273 1274The Alternate Screen Buffer 1275Xterm maintains two screen buffers. The normal screen buffer allows you 1276to scroll back to view saved lines of output up to the maximum set by 1277the saveLines resource. The alternate screen buffer is exactly as large 1278as the display, contains no additional saved lines. When the alternate 1279screen buffer is active, you cannot scroll back to view saved lines. 1280Xterm provides control sequences and menu entries for switching between 1281the two. 1282 1283Most full-screen applications use terminfo or termcap to obtain strings 1284used to start/stop full-screen mode, i.e., smcup and rmcup for terminfo, 1285or the corresponding ti and te for termcap. The titeInhibit resource 1286removes the ti and te strings from the TERMCAP string which is set in 1287the environment for some platforms. That is not done when xterm is 1288built with terminfo libraries because terminfo does not provide the 1289whole text of the termcap data in one piece. It would not work for ter- 1290minfo anyway, since terminfo data is not passed in environment vari- 1291ables; setting an environment variable in this manner would have no 1292effect on the application's ability to switch between normal and alter- 1293nate screen buffers. Instead, the newer private mode controls (such as 12941 0 4 9 ) for switching between normal and alternate screen buffers sim- 1295ply disable the switching. They add other features such as clearing the 1296display for the same reason: to make the details of switching indepen- 1297dent of the application that requests the switch. 1298 1299Bracketed Paste Mode 1300When bracketed paste mode is set, pasted text is bracketed with control 1301sequences so that the program can differentiate pasted text from typed- 1302in text. When bracketed paste mode is set, the program will receive: 1303 ESC [ 200 ~, 1304followed by the pasted text, followed by 1305 ESC [ 201 ~. 1306 1307Title Modes 1308The window- and icon-labels can be set or queried using control 1309sequences. As a VT220-emulator, xterm "should" limit the character 1310encoding for the corresponding strings to ISO-8859-1. Indeed, it used 1311to be the case (and was documented) that window titles had to be 1312ISO-8859-1. This is no longer the case. However, there are many appli- 1313cations which still assume that titles are set using ISO-8859-1. So 1314that is the default behavior. 1315 1316If xterm is running with UTF-8 encoding, it is possible to use window- 1317and icon-labels encoded using UTF-8. That is because the underlying X 1318libraries (and many, but not all) window managers support this feature. 1319 1320The utf8Title X resource setting tells xterm to disable a reconversion 1321of the title string back to ISO-8859-1, allowing the title strings to be 1322interpreted as UTF-8. The same feature can be enabled using the title 1323mode control sequence described in this summary. 1324 1325Separate from the ability to set the titles, xterm provides the ability 1326to query the titles, returning them either in ISO-8859-1 or UTF-8. This 1327choice is available only while xterm is using UTF-8 encoding. 1328 1329Finally, the characters sent to, or returned by a title control are less 1330constrained than the rest of the control sequences. To make them more 1331manageable (and constrained), for use in shell scripts, xterm has an 1332optional feature which decodes the string from hexadecimal (for setting 1333titles) or for encoding the title into hexadecimal when querying the 1334value. 1335 1336Mouse Tracking 1337The VT widget can be set to send the mouse position and other informa- 1338tion on button presses. These modes are typically used by editors and 1339other full-screen applications that want to make use of the mouse. 1340 1341There are six mutually exclusive modes. One is DEC Locator mode, 1342enabled by the DECELR CSI Ps ; Ps ' z control sequence, and is not 1343described here (control sequences are summarized above). The remaining 1344five modes are each enabled (or disabled) by a different parameter in 1345the "DECSET CSI ? Pm h " or "DECRST CSI ? Pm l " control sequence. 1346 1347Manifest constants for the parameter values are defined in xcharmouse.h 1348as follows: 1349 1350 #define SET_X10_MOUSE 9 1351 #define SET_VT200_MOUSE 1000 1352 #define SET_VT200_HIGHLIGHT_MOUSE 1001 1353 #define SET_BTN_EVENT_MOUSE 1002 1354 #define SET_ANY_EVENT_MOUSE 1003 1355 1356 #define SET_FOCUS_EVENT_MOUSE 1004 1357 1358 #define SET_EXT_MODE_MOUSE 1005 1359 1360The motion reporting modes are strictly xterm extensions, and are not 1361part of any standard, though they are analogous to the DEC VT200 DECELR 1362locator reports. 1363 1364Parameters (such as pointer position and button number) for all mouse 1365tracking escape sequences generated by xterm encode numeric parameters 1366in a single character as value+32. For example, ! specifies the value 13671. The upper left character position on the terminal is denoted as 1,1. 1368 1369X10 compatibility mode sends an escape sequence only on button press, 1370encoding the location and the mouse button pressed. It is enabled by 1371specifying parameter 9 to DECSET. On button press, xterm sends CSI M 1372CbCxCy (6 characters). 1373o Cb is button-1. 1374o Cx and Cy are the x and y coordinates of the mouse when the button 1375 was pressed. 1376 1377Normal tracking mode sends an escape sequence on both button press and 1378release. Modifier key (shift, ctrl, meta) information is also sent. It 1379is enabled by specifying parameter 1000 to DECSET. On button press or 1380release, xterm sends CSI M CbCxCy. 1381o The low two bits of Cb encode button information: 0=MB1 pressed, 1382 1=MB2 pressed, 2=MB3 pressed, 3=release. 1383o The next three bits encode the modifiers which were down when the 1384 button was pressed and are added together: 4=Shift, 8=Meta, 16=Con- 1385 trol. Note however that the shift and control bits are normally 1386 unavailable because xterm uses the control modifier with mouse for 1387 popup menus, and the shift modifier is used in the default transla- 1388 tions for button events. The Meta modifier recognized by xterm is 1389 the mod1 mask, and is not necessarily the "Meta" key (see xmodmap). 1390o Cx and Cy are the x and y coordinates of the mouse event, encoded as 1391 in X10 mode. 1392 1393Wheel mice may return buttons 4 and 5. Those buttons are represented by 1394the same event codes as buttons 1 and 2 respectively, except that 64 is 1395added to the event code. Release events for the wheel buttons are not 1396reported. 1397 1398Mouse highlight tracking notifies a program of a button press, receives 1399a range of lines from the program, highlights the region covered by the 1400mouse within that range until button release, and then sends the program 1401the release coordinates. It is enabled by specifying parameter 1001 to 1402DECSET. Highlighting is performed only for button 1, though other but- 1403ton events can be received. 1404 1405Warning: use of this mode requires a cooperating program or it will hang 1406xterm. 1407 1408On button press, the same information as for normal tracking is gener- 1409ated; xterm then waits for the program to send mouse tracking informa- 1410tion. All X events are ignored until the proper escape sequence is 1411received from the pty: CSI Ps ; Ps ; Ps ; Ps ; Ps T . The parameters 1412are func, startx, starty, firstrow, and lastrow. func is non-zero to 1413initiate highlight tracking and zero to abort. startx and starty give 1414the starting x and y location for the highlighted region. The ending 1415location tracks the mouse, but will never be above row firstrow and will 1416always be above row lastrow. (The top of the screen is row 1.) When 1417the button is released, xterm reports the ending position one of two 1418ways: 1419o if the start and end coordinates are the same locations: 1420 CSI t CxCy. 1421o otherwise: 1422 CSI T CxCyCxCyCxCy. 1423 The parameters are startx, starty, endx, endy, mousex, and mousey. 1424 - startx, starty, endx, and endy give the starting and ending 1425 character positions of the region. 1426 - mousex and mousey give the location of the mouse at button up, 1427 which may not be over a character. 1428 1429Button-event tracking is essentially the same as normal tracking, but 1430xterm also reports button-motion events. Motion events are reported 1431only if the mouse pointer has moved to a different character cell. It 1432is enabled by specifying parameter 1002 to DECSET. On button press or 1433release, xterm sends the same codes used by normal tracking mode. 1434o On button-motion events, xterm adds 32 to the event code (the third 1435 character, Cb). 1436o The other bits of the event code specify button and modifier keys as 1437 in normal mode. For example, motion into cell x,y with button 1 1438 down is reported as CSI M @ CxCy. ( @ = 32 + 0 (button 1) + 32 1439 (motion indicator) ). Similarly, motion with button 3 down is 1440 reported as CSI M B CxCy. ( B = 32 + 2 (button 3) + 32 (motion 1441 indicator) ). 1442 1443Any-event mode is the same as button-event mode, except that all motion 1444events are reported, even if no mouse button is down. It is enabled by 1445specifying 1003 to DECSET. 1446 1447FocusIn/FocusOut can be combined with any of the mouse events since it 1448uses a different protocol. When set, it causes xterm to send CSI I 1449when the terminal gains focus, and CSI O when it loses focus. 1450 1451Extended mouse mode enables UTF-8 encoding for Cx and Cy under all 1452tracking modes, expanding the maximum encodable position from 223 to 14532015. For positions less than 95, the resulting output is identical 1454under both modes. Under extended mouse mode, positions greater than 95 1455generate "extra" bytes which will confuse applications which do not 1456treat their input as a UTF-8 stream. Likewise, Cb will be UTF-8 1457encoded, to reduce confusion with wheel mouse events. 1458 1459NOTE: Under normal mouse mode, positions outside (160,94) result in byte 1460pairs which can be interpreted as a single UTF-8 character; applications 1461which do treat their input as UTF-8 will almost certainly be confused 1462unless extended mouse mode is active. 1463 1464Tektronix 4014 Mode 1465Most of these sequences are standard Tektronix 4014 control sequences. 1466Graph mode supports the 12-bit addressing of the Tektronix 4014. The 1467major features missing are the write-through and defocused modes. This 1468document does not describe the commands used in the various Tektronix 1469plotting modes but does describe the commands to switch modes. 1470 1471BEL Bell (Ctrl-G). 1472BS Backspace (Ctrl-H). 1473TAB Horizontal Tab (Ctrl-I). 1474LF Line Feed or New Line (Ctrl-J). 1475VT Cursor up (Ctrl-K). 1476FF Form Feed or New Page (Ctrl-L). 1477CR Carriage Return (Ctrl-M). 1478ESC ETX Switch to VT100 Mode (ESC Ctrl-C). 1479ESC ENQ Return Terminal Status (ESC Ctrl-E). 1480ESC FF PAGE (Clear Screen) (ESC Ctrl-L). 1481ESC SO Begin 4015 APL mode (ESC Ctrl-N). (This is ignored by xterm). 1482ESC SI End 4015 APL mode (ESC Ctrl-O). (This is ignored by xterm). 1483ESC ETB COPY (Save Tektronix Codes to file COPYyyyy-mm-dd.hh:mm:ss). 1484 ETB (end transmission block) is the same as Ctrl-W. 1485ESC CAN Bypass Condition (ESC Ctrl-X). 1486ESC SUB GIN mode (ESC Ctrl-Z). 1487ESC FS Special Point Plot Mode (ESC Ctrl-\). 1488ESC 8 Select Large Character Set. 1489ESC 9 Select #2 Character Set. 1490ESC : Select #3 Character Set. 1491ESC ; Select Small Character Set. 1492OSC Ps ; Pt BEL 1493 Set Text Parameters of VT window. 1494 Ps = 0 -> Change Icon Name and Window Title to Pt. 1495 Ps = 1 -> Change Icon Name to Pt. 1496 Ps = 2 -> Change Window Title to Pt. 1497 Ps = 4 6 -> Change Log File to Pt. (This is normally dis- 1498 abled by a compile-time option). 1499ESC ` Normal Z Axis and Normal (solid) Vectors. 1500ESC a Normal Z Axis and Dotted Line Vectors. 1501ESC b Normal Z Axis and Dot-Dashed Vectors. 1502ESC c Normal Z Axis and Short-Dashed Vectors. 1503ESC d Normal Z Axis and Long-Dashed Vectors. 1504ESC h Defocused Z Axis and Normal (solid) Vectors. 1505ESC i Defocused Z Axis and Dotted Line Vectors. 1506ESC j Defocused Z Axis and Dot-Dashed Vectors. 1507ESC k Defocused Z Axis and Short-Dashed Vectors. 1508ESC l Defocused Z Axis and Long-Dashed Vectors. 1509ESC p Write-Thru Mode and Normal (solid) Vectors. 1510ESC q Write-Thru Mode and Dotted Line Vectors. 1511ESC r Write-Thru Mode and Dot-Dashed Vectors. 1512ESC s Write-Thru Mode and Short-Dashed Vectors. 1513ESC t Write-Thru Mode and Long-Dashed Vectors. 1514FS Point Plot Mode (Ctrl-\). 1515GS Graph Mode (Ctrl-]). 1516RS Incremental Plot Mode (Ctrl-^). 1517US Alpha Mode (Ctrl-_). 1518 1519VT52 Mode 1520Parameters for cursor movement are at the end of the ESC Y escape 1521sequence. Each ordinate is encoded in a single character as value+32. 1522For example, ! is 1. The screen coordinate system is 0-based. 1523 1524ESC A Cursor up. 1525ESC B Cursor down. 1526ESC C Cursor right. 1527ESC D Cursor left. 1528ESC F Enter graphics mode. 1529ESC G Exit graphics mode. 1530ESC H Move the cursor to the home position. 1531ESC I Reverse line feed. 1532ESC J Erase from the cursor to the end of the screen. 1533ESC K Erase from the cursor to the end of the line. 1534ESC Y Ps Ps 1535 Move the cursor to given row and column. 1536ESC Z Identify. 1537 -> ESC / Z (``I am a VT52.''). 1538ESC = Enter alternate keypad mode. 1539ESC > Exit alternate keypad mode. 1540ESC < Exit VT52 mode (Enter VT100 mode). 1541