1.\" Copyright (c) 1985, 1991, 1993, 1994 2.\" The Regents of the University of California. All rights reserved. 3.\" 4.\" Redistribution and use in source and binary forms, with or without 5.\" modification, are permitted provided that the following conditions 6.\" are met: 7.\" 1. Redistributions of source code must retain the above copyright 8.\" notice, this list of conditions and the following disclaimer. 9.\" 2. Redistributions in binary form must reproduce the above copyright 10.\" notice, this list of conditions and the following disclaimer in the 11.\" documentation and/or other materials provided with the distribution. 12.\" 3. All advertising materials mentioning features or use of this software 13.\" must display the following acknowledgement: 14.\" This product includes software developed by the University of 15.\" California, Berkeley and its contributors. 16.\" 4. Neither the name of the University nor the names of its contributors 17.\" may be used to endorse or promote products derived from this software 18.\" without specific prior written permission. 19.\" 20.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30.\" SUCH DAMAGE. 31.\" 32.\" @(#)termcap.5 8.3 (Berkeley) 4/16/94 33.\" 34.\" /*************************************************************************** 35.\" * COPYRIGHT NOTICE * 36.\" **************************************************************************** 37.\" * ncurses is copyright (C) 1992-1995 * 38.\" * Zeyd M. Ben-Halim * 39.\" * zmbenhal@netcom.com * 40.\" * Eric S. Raymond * 41.\" * esr@snark.thyrsus.com * 42.\" * * 43.\" * Permission is hereby granted to reproduce and distribute ncurses * 44.\" * by any means and for any fee, whether alone or as part of a * 45.\" * larger distribution, in source or in binary form, PROVIDED * 46.\" * this notice is included with any such distribution, and is not * 47.\" * removed from any of its header files. Mention of ncurses in any * 48.\" * applications linked with it is highly appreciated. * 49.\" * * 50.\" * ncurses comes AS IS with no warranty, implied or expressed. * 51.\" * * 52.\" ***************************************************************************/ 53.\" 54.\" $FreeBSD$ 55.\" 56.Dd December 13, 2009 57.Dt TERMCAP 5 58.Os 59.Sh NAME 60.Nm termcap 61.Nd terminal capability data base 62.Sh SYNOPSIS 63.Nm 64.Sh DESCRIPTION 65The 66.Nm 67file 68is a data base describing terminals, 69used, 70for example, 71by 72.Xr \&vi 1 73and 74.Xr ncurses 3 . 75Terminals are described in 76.Nm 77by giving a set of capabilities that they have and by describing 78how operations are performed. 79Padding requirements and initialization sequences 80are included in 81.Nm . 82.Pp 83Entries in 84.Nm 85consist of a number of `:'-separated fields. 86The first entry for each terminal gives the names that are known for the 87terminal, separated by `|' characters. 88The first name given is the most common abbreviation for the terminal. 89The last name given should be a long name fully identifying the terminal, 90and all others are understood as synonyms for the terminal name. 91All names but the last should be in lower case and contain no blanks; 92the last name may well contain upper case characters and blanks for 93readability. 94.Pp 95Terminal names (except for the last, verbose entry) 96should be chosen using the following conventions. 97The particular piece of hardware making up the terminal 98should have a root name chosen, thus 99.Dq hp2621 100This name should not contain hyphens. 101Modes that the hardware can be in 102or user preferences 103should be indicated by appending a hyphen and an indicator of the mode. 104Therefore, a 105.Dq vt100 106in 132-column mode would be 107.Dq vt100-w . 108The following suffixes should be used where possible: 109.Bl -column indent "With automatic margins (usually default)xx" -offset indent 110.Sy "Suffix Meaning Example" 111-w Wide mode (more than 80 columns) vt100-w 112-am With automatic margins (usually default) vt100-am 113-nam Without automatic margins vt100-nam 114.Pf \- Ar n Ta No "Number of lines on screen aaa-60" 115-na No arrow keys (leave them in local) concept100-na 116.Pf \- Ar \&np Ta No "Number of pages of memory concept100-4p" 117-rv Reverse video concept100-rv 118.El 119.Sh CAPABILITIES 120The description field attempts to convey the semantics of the 121capability. 122You may find some codes in the description field: 123.Bl -tag -width #[1-9] 124.It (P) 125indicates that padding may be specified. 126.It #[1-9] 127in the description field indicates that the string is passed through 128.Xr tparm 3 129or 130.Xr tgoto 3 131with parms as given (#\fIi\fP). 132.It (P*) 133indicates that padding may vary in proportion to the number of 134lines affected. 135.It (#\d\fIi\fP\u) 136indicates the \fIi\fP\uth\d parameter. 137.El 138.Pp 139These are the boolean capabilities: 140.Bd -literal 141\fBBoolean TCap Description\fR 142\fBVariables Code\fR 143auto_left_margin bw cursor_left wraps from column 0 to last 144 column 145auto_right_margin am terminal has automatic margins 146no_esc_ctlc xb beehive (f1=escape, f2=ctrl C) 147ceol_standout_glitch xs standout not erased by overwriting (hp) 148eat_newline_glitch xn newline ignored after 80 cols (concept) 149erase_overstrike eo can erase overstrikes with a blank 150generic_type gn generic line type 151hard_copy hc hardcopy terminal 152has_meta_key km Has a meta key, sets msb high 153has_status_line hs has extra status line 154insert_null_glitch in insert mode distinguishes nulls 155memory_above da display may be retained above the screen 156memory_below db display may be retained below the screen 157move_insert_mode mi safe to move while in insert mode 158move_standout_mode ms safe to move while in standout mode 159over_strike os terminal can overstrike 160status_line_esc_ok es escape can be used on the status line 161dest_tabs_magic_smso xt tabs destructive, magic so char (t1061) 162tilde_glitch hz cannot print ~'s (hazeltine) 163transparent_underline ul underline character overstrikes 164xon_xoff xo terminal uses xon/xoff handshaking 165needs_xon_xoff nx padding will not work, xon/xoff required 166prtr_silent 5i printer will not echo on screen 167hard_cursor HC cursor is hard to see 168non_rev_rmcup NR enter_ca_mode does not reverse exit_ca_mode 169no_pad_char NP pad character does not exist 170non_dest_scroll_region ND scrolling region is non-destructive 171can_change cc terminal can re-define existing colors 172back_color_erase ut screen erased with background color 173hue_lightness_saturation hl terminal uses only HLS color 174 notation (tektronix) 175col_addr_glitch YA only positive motion for column address and 176 micro_column_address caps 177cr_cancels_micro_mode YB using cr turns off micro mode 178has_print_wheel YC printer needs operator to change character 179 set 180row_addr_glitch YD only positive motion for row_address and 181 micro_row_address caps 182semi_auto_right_margin YE printing in last column causes cr 183cpi_changes_res YF changing character pitch changes resolution 184lpi_changes_res YG changing line pitch changes resolution 185.Ed 186.Pp 187These are the numeric capabilities: 188.Bd -literal 189\fBNumeric TCap Description\fR 190\fBVariables Code\fR 191columns co number of columns in aline 192init_tabs it tabs initially every # spaces 193lines li number of lines on screen or page 194lines_of_memory lm lines of memory if > line. 0 => varies 195magic_cookie_glitch sg number of blank chars left by 196 enter_standout_mode or exit_standout_mode 197padding_baud_rate pb lowest baud rate where padding needed 198virtual_terminal vt virtual terminal number (CB/unix) 199width_status_line ws columns in status line 200num_labels Nl number of labels on screen 201label_height lh rows in each label 202label_width lw columns in each label 203max_attributes ma maximum combined attributes terminal can 204 handle 205maximum_windows MW maximum number of definable windows 206magic_cookie_glitch_ul ug number of blanks left by underline 207# 208# These came in with SVr4's color support 209# 210max_colors Co maximum numbers of colors on screen 211max_pairs pa maximum number of color-pairs on the screen 212no_color_video NC video attributes that cannot be used with 213 colors 214# 215# The following numeric capabilities are present in the SVr4.0 term 216# structure, but are not yet documented in the man page. 217# They came in with SVr4's printer support. 218# 219buffer_capacity Ya numbers of bytes buffered before printing 220dot_vert_spacing Yb spacing of pins vertically in pins per inch 221dot_horz_spacing Yc spacing of dots horizontally in dots per 222 inch 223max_micro_address Yd maximum value in micro_..._address 224max_micro_jump Ye maximum value in parm_..._micro 225micro_char_size Yf character size when in micro mode 226micro_line_size Yg line size when in micro mode 227number_of_pins Yh numbers of pins in print-head 228output_res_char Yi horizontal resolution in units per line 229output_res_line Yj vertical resolution in units per line 230output_res_horz_inch Yk horizontal resolution in units per inch 231output_res_vert_inch Yl vertical resolution in units per inch 232print_rate Ym print rate in chars per second 233wide_char_size Yn character step size when in double wide 234 mode 235buttons BT number of buttons on mouse 236bit_image_entwining Yo number of passed for each bit-image row 237bit_image_type Yp type of bit-image device 238.Ed 239.Pp 240These are the string capabilities: 241.Bd -literal 242\fBString TCap Description\fR 243\fBVariables Code\fR 244back_tab bt back tab (P) 245bell bl audible signal (bell) (P) 246carriage_return cr carriage return (P*) 247change_scroll_region cs change region to line #1 to line #2 (P) 248clear_all_tabs ct clear all tab stops (P) 249clear_screen cl clear screen and home cursor (P*) 250clr_eol ce clear to end of line (P) 251clr_eos cd clear to end of screen (P*) 252column_address ch horizontal position #1, absolute (P) 253command_character CC terminal settable cmd character in 254 prototype 255cursor_address cm move to row #1 columns #2 256cursor_down do down one line 257cursor_home ho home cursor 258cursor_invisible vi make cursor invisible 259cursor_left le move left one space 260cursor_mem_address CM memory relative cursor addressing 261cursor_normal ve make cursor appear normal (undo 262 cursor_invisible/cursor_visible) 263cursor_right nd move right one space 264cursor_to_ll ll last line, first column 265cursor_up up up one line 266cursor_visible vs make cursor very visible 267delete_character dc delete character (P*) 268delete_line dl delete line (P*) 269dis_status_line ds disable status line 270down_half_line hd half a line down 271enter_alt_charset_mode as start alternate character set (P) 272enter_blink_mode mb turn on blinking 273enter_bold_mode md turn on bold (extra bright) mode 274enter_ca_mode ti string to start programs using 275 cursor_address 276enter_delete_mode dm enter delete mode 277enter_dim_mode mh turn on half-bright mode 278enter_insert_mode im enter insert mode 279enter_secure_mode mk turn on blank mode (characters invisible) 280enter_protected_mode mp turn on protected mode 281enter_reverse_mode mr turn on reverse video mode 282enter_standout_mode so begin standout mode 283enter_underline_mode us begin underline mode 284erase_chars ec erase #1 characters (P) 285exit_alt_charset_mode ae end alternate character set (P) 286exit_attribute_mode me turn off all attributes 287exit_ca_mode te strings to end programs using cup 288exit_delete_mode ed end delete mode 289exit_insert_mode ei exit insert mode 290exit_standout_mode se exit standout mode 291exit_underline_mode ue exit underline mode 292flash_screen vb visible bell (may not move cursor) 293form_feed ff hardcopy terminal page eject (P*) 294from_status_line fs return from status line 295init_1string i1 initialization string 296init_2string is initialization string 297init_3string i3 initialization string 298init_file if name of initialization file 299insert_character ic insert character (P) 300insert_line al insert line (P*) 301insert_padding ip insert padding after inserted character 302key_backspace kb backspace key 303key_catab ka clear-all-tabs key 304key_clear kC clear-screen or erase key 305key_ctab kt clear-tab key 306key_dc kD delete-character key 307key_dl kL delete-line key 308key_down kd down-arrow key 309key_eic kM sent by rmir or smir in insert mode 310key_eol kE clear-to-end-of-line key 311key_eos kS clear-to-end-of-screen key 312key_f0 k0 F0 function key 313key_f1 k1 F1 function key 314key_f10 k; F10 function key 315key_f2 k2 F2 function key 316key_f3 k3 F3 function key 317key_f4 k4 F4 function key 318key_f5 k5 F5 function key 319key_f6 k6 F6 function key 320key_f7 k7 F7 function key 321key_f8 k8 F8 function key 322key_f9 k9 F9 function key 323key_home kh home key 324key_ic kI insert-character key 325key_il kA insert-line key 326key_left kl left-arrow key 327key_ll kH last-line key 328key_npage kN next-page key 329key_ppage kP prev-page key 330key_right kr right-arrow key 331key_sf kF scroll-forward key 332key_sr kR scroll-backward key 333key_stab kT set-tab key 334key_up ku up-arrow key 335keypad_local ke leave 'keyboard_transmit' mode 336keypad_xmit ks enter 'keyboard_transmit' mode 337lab_f0 l0 label on function key f0 if not f0 338lab_f1 l1 label on function key f1 if not f1 339lab_f10 la label on function key f10 if not f10 340lab_f2 l2 label on function key f2 if not f2 341lab_f3 l3 label on function key f3 if not f3 342lab_f4 l4 label on function key f4 if not f4 343lab_f5 l5 label on function key f5 if not f5 344lab_f6 l6 label on function key f6 if not f6 345lab_f7 l7 label on function key f7 if not f7 346lab_f8 l8 label on function key f8 if not f8 347lab_f9 l9 label on function key f9 if not f9 348meta_off mo turn off meta mode 349meta_on mm turn on meta mode (8th-bit on) 350newline nw newline (behave like cr followed by lf) 351pad_char pc padding char (instead of null) 352parm_dch DC delete #1 chars (P*) 353parm_delete_line DL delete #1 lines (P*) 354parm_down_cursor DO down #1 lines (P*) 355parm_ich IC insert #1 chars (P*) 356parm_index SF scroll forward #1 lines (P) 357parm_insert_line AL insert #1 lines (P*) 358parm_left_cursor LE move #1 chars to the left (P) 359parm_right_cursor RI move #1 chars to the right (P*) 360parm_rindex SR scroll back #1 lines (P) 361parm_up_cursor UP up #1 lines (P*) 362pkey_key pk program function key #1 to type string #2 363pkey_local pl program function key #1 to execute 364 string #2 365pkey_xmit px program function key #1 to transmit 366 string #2 367print_screen ps print contents of screen 368prtr_off pf turn off printer 369prtr_on po turn on printer 370repeat_char rp repeat char #1 #2 times (P*) 371reset_1string r1 reset string 372reset_2string r2 reset string 373reset_3string r3 reset string 374reset_file rf name of reset file 375restore_cursor rc restore cursor to last position of 376 save_cursor 377row_address cv vertical position #1 absolute (P) 378save_cursor sc save current cursor position (P) 379scroll_forward sf scroll text up (P) 380scroll_reverse sr scroll text down (P) 381set_attributes sa define video attributes #1-#9 (PG9) 382set_tab st set a tab in every row, current columns 383set_window wi current window is lines #1-#2 cols #3-#4 384tab ta tab to next 8-space hardware tab stop 385to_status_line ts move to status line 386underline_char uc underline char and move past it 387up_half_line hu half a line up 388init_prog iP path name of program for initialization 389key_a1 K1 upper left of keypad 390key_a3 K3 upper right of keypad 391key_b2 K2 center of keypad 392key_c1 K4 lower left of keypad 393key_c3 K5 lower right of keypad 394prtr_non pO turn on printer for #1 bytes 395termcap_init2 i2 secondary initialization string 396termcap_reset rs terminal reset string 397# 398# SVr1 capabilities stop here. IBM's version of terminfo is the same as 399# SVr4 up to this point, but has a different set afterwards. 400# 401char_padding rP like insert_padding but when in insert mode 402acs_chars ac graphics charset pairs - def=vt100 403plab_norm pn program label #1 to show string #2 404key_btab kB back-tab key 405enter_xon_mode SX turn on xon/xoff handshaking 406exit_xon_mode RX turn off xon/xoff handshaking 407enter_am_mode SA turn on automatic margins 408exit_am_mode RA turn off automatic margins 409xon_character XN XON character 410xoff_character XF XOFF character 411ena_acs eA enable alternate char set 412label_on LO turn on soft labels 413label_off LF turn off soft labels 414key_beg @1 begin key 415key_cancel @2 cancel key 416key_close @3 close key 417key_command @4 command key 418key_copy @5 copy key 419key_create @6 create key 420key_end @7 end key 421key_enter @8 enter/send key 422key_exit @9 exit key 423key_find @0 find key 424key_help %1 help key 425key_mark %2 mark key 426key_message %3 message key 427key_move %4 move key 428key_next %5 next key 429key_open %6 open key 430key_options %7 options key 431key_previous %8 previous key 432key_print %9 print key 433key_redo %0 redo key 434key_reference &1 reference key 435key_refresh &2 refresh key 436key_replace &3 replace key 437key_restart &4 restart key 438key_resume &5 resume key 439key_save &6 save key 440key_suspend &7 suspend key 441key_undo &8 undo key 442key_sbeg &9 shifted key 443key_scancel &0 shifted key 444key_scommand *1 shifted key 445key_scopy *2 shifted key 446key_screate *3 shifted key 447key_sdc *4 shifted key 448key_sdl *5 shifted key 449key_select *6 select key 450key_send *7 shifted key 451key_seol *8 shifted key 452key_sexit *9 shifted key 453key_sfind *0 shifted key 454key_shelp #1 shifted key 455key_shome #2 shifted key 456key_sic #3 shifted key 457key_sleft #4 shifted key 458key_smessage %a shifted key 459key_smove %b shifted key 460key_snext %c shifted key 461key_soptions %d shifted key 462key_sprevious %e shifted key 463key_sprint %f shifted key 464key_sredo %g shifted key 465key_sreplace %h shifted key 466key_sright %i shifted key 467key_srsume %j shifted key 468key_ssave !1 shifted key 469key_ssuspend !2 shifted key 470key_sundo !3 shifted key 471req_for_input RF send next input char (for ptys) 472key_f11 F1 F11 function key 473key_f12 F2 F12 function key 474key_f13 F3 F13 function key 475key_f14 F4 F14 function key 476key_f15 F5 F15 function key 477key_f16 F6 F16 function key 478key_f17 F7 F17 function key 479key_f18 F8 F18 function key 480key_f19 F9 F19 function key 481key_f20 FA F20 function key 482key_f21 FB F21 function key 483key_f22 FC F22 function key 484key_f23 FD F23 function key 485key_f24 FE F24 function key 486key_f25 FF F25 function key 487key_f26 FG F26 function key 488key_f27 FH F27 function key 489key_f28 FI F28 function key 490key_f29 FJ F29 function key 491key_f30 FK F30 function key 492key_f31 FL F31 function key 493key_f32 FM F32 function key 494key_f33 FN F33 function key 495key_f34 FO F34 function key 496key_f35 FP F35 function key 497key_f36 FQ F36 function key 498key_f37 FR F37 function key 499key_f38 FS F38 function key 500key_f39 FT F39 function key 501key_f40 FU F40 function key 502key_f41 FV F41 function key 503key_f42 FW F42 function key 504key_f43 FX F43 function key 505key_f44 FY F44 function key 506key_f45 FZ F45 function key 507key_f46 Fa F46 function key 508key_f47 Fb F47 function key 509key_f48 Fc F48 function key 510key_f49 Fd F49 function key 511key_f50 Fe F50 function key 512key_f51 Ff F51 function key 513key_f52 Fg F52 function key 514key_f53 Fh F53 function key 515key_f54 Fi F54 function key 516key_f55 Fj F55 function key 517key_f56 Fk F56 function key 518key_f57 Fl F57 function key 519key_f58 Fm F58 function key 520key_f59 Fn F59 function key 521key_f60 Fo F60 function key 522key_f61 Fp F61 function key 523key_f62 Fq F62 function key 524key_f63 Fr F63 function key 525clr_bol cb Clear to beginning of line 526clear_margins MC clear right and left soft margins 527set_left_margin ML set left soft margin 528set_right_margin MR set right soft margin 529label_format Lf label format 530set_clock SC set clock, #1 hrs #2 mins #3 secs 531display_clock DK display clock at (#1,#2) 532remove_clock RC remove clock 533create_window CW define a window #1 from #2, #3 to #4, #5 534goto_window WG go to window #1 535hangup HU hang-up phone 536dial_phone DI dial number #1 537quick_dial QD dial number #1 without checking 538tone TO select touch tone dialing 539pulse PU select pulse dialling 540flash_hook fh flash switch hook 541fixed_pause PA pause for 2-3 seconds 542wait_tone WA wait for dial-tone 543user0 u0 User string #0 544user1 u1 User string #1 545user2 u2 User string #2 546user3 u3 User string #3 547user4 u4 User string #4 548user5 u5 User string #5 549user6 u6 User string #6 550user7 u7 User string #7 551user8 u8 User string #8 552user9 u9 User string #9 553# 554# SVr4 added these capabilities to support color 555# 556orig_pair op Set default pair to its original value 557orig_colors oc Set all color pairs to the original ones 558initialize_color Ic initialize color #1 to (#2,#3,#4) 559initialize_pair Ip Initialize color pair #1 to fg=(#2,#3,#4), 560 bg=(#5,#6,#7) 561set_color_pair sp Set current color pair to #1 562set_foreground Sf Set foreground color #1 563set_background Sb Set background color #1 564# 565# SVr4 added these capabilities to support printers 566# 567change_char_pitch ZA Change number of characters per inch 568change_line_pitch ZB Change number of lines per inch 569change_res_horz ZC Change horizontal resolution 570change_res_vert ZD Change vertical resolution 571define_char ZE Define a character 572enter_doublewide_mode ZF Enter double-wide mode 573enter_draft_quality ZG Enter draft-quality mode 574enter_italics_mode ZH Enter italic mode 575enter_leftward_mode ZI Start leftward carriage motion 576enter_micro_mode ZJ Start micro-motion mode 577enter_near_letter_quality ZK Enter NLQ mode 578enter_normal_quality ZL Enter normal-quality mode 579enter_shadow_mode ZM Enter shadow-print mode 580enter_subscript_mode ZN Enter subscript mode 581enter_superscript_mode ZO Enter superscript mode 582enter_upward_mode ZP Start upward carriage motion 583exit_doublewide_mode ZQ End double-wide mode 584exit_italics_mode ZR End italic mode 585exit_leftward_mode ZS End left-motion mode 586exit_micro_mode ZT End micro-motion mode 587exit_shadow_mode ZU End shadow-print mode 588exit_subscript_mode ZV End subscript mode 589exit_superscript_mode ZW End superscript mode 590exit_upward_mode ZX End reverse character motion 591micro_column_address ZY Like column_address in micro mode 592micro_down ZZ Like cursor_down in micro mode 593micro_left Za Like cursor_left in micro mode 594micro_right Zb Like cursor_right in micro mode 595micro_row_address Zc Like row_address in micro mode 596micro_up Zd Like cursor_up in micro mode 597order_of_pins Ze Match software bits to print-head pins 598parm_down_micro Zf Like parm_down_cursor in micro mode 599parm_left_micro Zg Like parm_left_cursor in micro mode 600parm_right_micro Zh Like parm_right_cursor in micro mode 601parm_up_micro Zi Like parm_up_cursor in micro mode 602select_char_set Zj Select character set 603set_bottom_margin Zk Set bottom margin at current line 604set_bottom_margin_parm Zl Set bottom margin at line #1 or #2 lines 605 from bottom 606set_left_margin_parm Zm Set left (right) margin at column #1 (#2) 607set_right_margin_parm Zn Set right margin at column #1 608set_top_margin Zo Set top margin at current line 609set_top_margin_parm Zp Set top (bottom) margin at row #1 (#2) 610start_bit_image Zq Start printing bit image graphics 611start_char_set_def Zr Start character set definition 612stop_bit_image Zs Stop printing bit image graphics 613stop_char_set_def Zt End definition of character aet 614subscript_characters Zu List of subscriptible characters 615superscript_characters Zv List of superscriptible characters 616these_cause_cr Zw Printing any of these chars causes CR 617zero_motion Zx No motion for subsequent character 618# 619# The following string capabilities are present in the SVr4.0 term 620# structure, but are not documented in the man page. 621# 622char_set_names Zy List of character set names 623key_mouse Km Mouse event has occurred 624mouse_info Mi Mouse status information 625req_mouse_pos RQ Request mouse position 626get_mouse Gm Curses should get button events 627set_a_foreground AF Set ANSI foreground color 628set_a_background AB Set ANSI background color 629pkey_plab xl Program function key #1 to type string #2 630 and show string #3 631device_type dv Indicate language/codeset support 632code_set_init ci Init sequence for multiple codesets 633set0_des_seq s0 Shift to code set 0 (EUC set 0, ASCII) 634set1_des_seq s1 Shift to code set 1 635set2_des_seq s2 Shift to code set 2 636set3_des_seq s3 Shift to code set 3 637set_lr_margin ML Set both left and right margins to #1, #2 638set_tb_margin MT Sets both top and bottom margins to #1, #2 639bit_image_repeat Xy Repeat bit image cell #1 #2 times 640bit_image_newline Zz Move to next row of the bit image 641bit_image_carriage_return Yv Move to beginning of same row 642color_names Yw Give name for color #1 643define_bit_image_region Yx Define rectangular bit image region 644end_bit_image_region Yy End a bit-image region 645set_color_band Yz Change to ribbon color #1 646set_page_length YZ Set page length to #1 lines 647# 648# SVr4 added these capabilities for direct PC-clone support 649# 650display_pc_char S1 Display PC character 651enter_pc_charset_mode S2 Enter PC character display mode 652exit_pc_charset_mode S3 Exit PC character display mode 653enter_scancode_mode S4 Enter PC scancode mode 654exit_scancode_mode S5 Exit PC scancode mode 655pc_term_options S6 PC terminal options 656scancode_escape S7 Escape for scancode emulation 657alt_scancode_esc S8 Alternate escape for scancode emulation 658# 659# The XSI Curses standard added these. 660# 661enter_horizontal_hl_mode Xh Enter horizontal highlight mode 662enter_left_hl_mode Xl Enter left highlight mode 663enter_low_hl_mode Xo Enter low highlight mode 664enter_right_hl_mode Xr Enter right highlight mode 665enter_top_hl_mode Xt Enter top highlight mode 666enter_vertical_hl_mode Xv Enter vertical highlight mode 667.Ed 668.Pp 669Obsolete termcap capabilities. 670New software should not rely on them at all. 671.Bd -literal 672\fBBoolean TCap Description\fR 673\fBVariables Code\fR 674linefeed_is_newline NL move down with ^J 675even_parity EP terminal requires even parity 676odd_parity OP terminal requires odd parity 677half_duplex HD terminal is half-duplex 678lower_case_only LC terminal has only lower case 679upper_case_only UC terminal has only upper case 680has_hardware_tabs pt has 8-char tabs invoked with ^I 681return_does_clr_eol xr return clears the line 682tek_4025_insert_line xx Tektronix 4025 insert-line glitch 683backspaces_with_bs bs uses ^H to move left 684crt_no_scrolling ns crt cannot scroll 685no_correctly_working_cr nc no way to go to start of line 686.Ed 687.Bd -literal 688\fBNumber TCap Description\fR 689\fBVariables Code\fR 690backspace_delay dB padding required for ^H 691form_feed_delay dF padding required for ^L 692horizontal_tab_delay dT padding required for ^I 693vertical_tab_delay dV padding required for ^V 694number_of_function_keys kn count of function keys 695carriage_return_delay dC pad needed for CR 696new_line_delay dN pad needed for LF 697.Ed 698.Bd -literal 699\fBString TCap Description\fR 700\fBVariables Code\fR 701other_non_function_keys ko list of self-mapped keycaps 702arrow_key_map ma map arrow keys 703memory_lock_above ml lock visible screen memory above the 704 current line 705memory_unlock mu unlock visible screen memory above the 706 current line 707linefeed_if_not_lf nl use to move down 708backspace_if_not_bs bc move left, if not ^H 709.Ed 710.Ss A Sample Entry 711The following entry, which describes the Concept\-100, is among the more 712complex entries in the 713.Nm 714file as of this writing. 715.Bd -literal 716ca\||\|concept100\||\|c100\||\|concept\||\|c104\||\|concept100-4p\||\|HDS Concept\-100:\e 717 :al=3*\eE^R:am:bl=^G:cd=16*\eE^C:ce=16\eE^U:cl=2*^L:cm=\eEa%+ %+ :\e 718 :co#80:.cr=9^M:db:dc=16\eE^A:dl=3*\eE^B:do=^J:ei=\eE\e200:eo:im=\eE^P:in:\e 719 :ip=16*:is=\eEU\eEf\eE7\eE5\eE8\eEl\eENH\eEK\eE\e200\eEo&\e200\eEo\e47\eE:k1=\eE5:\e 720 :k2=\eE6:k3=\eE7:kb=^h:kd=\eE<:ke=\eEx:kh=\eE?:kl=\eE>:kr=\eE=:ks=\eEX:\e 721 :ku=\eE;:le=^H:li#24:mb=\eEC:me=\eEN\e200:mh=\eEE:mi:mk=\eEH:mp=\eEI:\e 722 :mr=\eED:nd=\eE=:pb#9600:rp=0.2*\eEr%.%+ :se=\eEd\eEe:sf=^J:so=\eEE\eED:\e 723 :.ta=8\et:te=\eEv \e200\e200\e200\e200\e200\e200\eEp\er\en:\e 724 :ti=\eEU\eEv 8p\eEp\er:ue=\eEg:ul:up=\eE;:us=\eEG:\e 725 :vb=\eEk\e200\e200\e200\e200\e200\e200\e200\e200\e200\e200\e200\e200\e200\e200\eEK:\e 726 :ve=\eEw:vs=\eEW:vt#8:xn:\e 727 :bs:cr=^M:dC#9:dT#8:nl=^J:ta=^I:pt: 728.Ed 729.Pp 730Entries may continue onto multiple lines by giving a \e as the last 731character of a line, and empty fields 732may be included for readability (here between the last field on a line 733and the first field on the next). 734Comments may be included on lines beginning with 735.Dq # . 736.Ss Types of Capabilities 737Capabilities in 738.Nm 739are of three types: Boolean capabilities, 740which indicate particular features that the terminal has; 741numeric capabilities, 742giving the size of the display or the size of other attributes; 743and string capabilities, 744which give character sequences that can be used to perform particular 745terminal operations. 746All capabilities have two-letter codes. 747For instance, the fact that 748the Concept has 749.Em automatic margins 750(an automatic return and linefeed 751when the end of a line is reached) is indicated by the Boolean capability 752.Sy \&am . 753Hence the description of the Concept includes 754.Sy \&am . 755.Pp 756Numeric capabilities are followed by the character `#' then the value. 757In the example above 758.Sy \&co , 759which indicates the number of columns the display has, 760gives the value `80' for the Concept. 761.Pp 762Finally, string-valued capabilities, such as 763.Sy \&ce 764(clear-to-end-of-line 765sequence) are given by the two-letter code, an `=', then a string 766ending at the next following `:'. 767A delay in milliseconds may appear after 768the `=' in such a capability, 769which causes padding characters to be supplied by 770.Xr tputs 3 771after the remainder of the string is sent to provide this delay. 772The delay can be either a number, 773such as `20', or a number followed by 774an `*', 775such as `3*'. 776An `*' indicates that the padding required is proportional 777to the number of lines affected by the operation, and the amount given is 778the per-affected-line padding required. 779(In the case of insert-character, 780the factor is still the number of 781.Em lines 782affected; 783this is always 1 unless the terminal has 784.Sy \&in 785and the software uses it.) 786When an `*' is specified, it is sometimes useful to give a delay of the form 787`3.5' to specify a delay per line to tenths of milliseconds. 788(Only one decimal place is allowed.) 789.Pp 790A number of escape sequences are provided in the string-valued capabilities 791for easy encoding of control characters there. 792.Sy \&\eE 793maps to an 794.Dv ESC 795character, 796.Sy \&^X 797maps to a control-X for any appropriate X, 798and the sequences 799.Sy \&\en 800.Sy \&\er 801.Sy \&\et 802.Sy \&\eb 803.Sy \&\ef 804map to linefeed, return, tab, backspace, and formfeed, respectively. 805Finally, characters may be given as three octal digits after a 806.Sy \&\e , 807and the characters 808.Sy \&^ 809and 810.Sy \&\e 811may be given as 812.Sy \&\e^ 813and 814.Sy \&\e\e . 815If it is necessary to place a 816.Sy \&: 817in a capability it must be escaped as 818.Sy \e: 819or be encoded as 820.Sy \&\e072 . 821If it is necessary to place a 822.Dv NUL 823character in a string capability it 824must be encoded as 825.Sy \&\e200 . 826(The routines that deal with 827.Nm 828use C strings and strip the high bits of the output very late, so that 829a 830.Sy \&\e200 831comes out as a 832.Sy \&\e000 833would.) 834.Pp 835Sometimes individual capabilities must be commented out. 836To do this, put a period before the capability name. 837For example, see the first 838.Sy \&cr 839and 840.Sy \&ta 841in the example above. 842.Ss Preparing Descriptions 843The most effective way to prepare a terminal description is by imitating 844the description of a similar terminal in 845.Nm 846and to build up a description gradually, using partial descriptions 847with 848.Xr \&vi 1 849to check that they are correct. 850Be aware that a very unusual terminal may expose deficiencies in 851the ability of the 852.Nm 853file to describe it 854or bugs in 855.Xr \&vi 1 . 856To easily test a new terminal description you are working on 857you can put it in your home directory in a file called 858.Pa .termcap 859and programs will look there before looking in 860.Pa /usr/share/misc/termcap . 861You can also set the environment variable 862.Ev TERMPATH 863to a list of absolute file pathnames (separated by spaces or colons), 864one of which contains the description you are working on, 865and programs will search them in the order listed, and nowhere else. 866See 867.Xr termcap 3 . 868The 869.Ev TERMCAP 870environment variable is usually set to the 871.Nm 872entry itself 873to avoid reading files when starting up a program. 874.Pp 875To get the padding for insert-line right 876(if the terminal manufacturer did not document it), 877a severe test is to use 878.Xr \&vi 1 879to edit 880.Pa /etc/passwd 881at 9600 baud, delete roughly 16 lines from the middle of the screen, 882then hit the `u' key several times quickly. 883If the display messes up, more padding is usually needed. 884A similar test can be used for insert-character. 885.Ss Basic Capabilities 886The number of columns on each line of the display is given by the 887.Sy \&co 888numeric capability. 889If the display is a 890.Tn CRT , 891then the 892number of lines on the screen is given by the 893.Sy \&li 894capability. 895If the display wraps around to the beginning of the next line when 896the cursor reaches the right margin, then it should have the 897.Sy \&am 898capability. 899If the terminal can clear its screen, 900the code to do this is given by the 901.Sy \&cl 902string capability. 903If the terminal overstrikes 904(rather than clearing the position when a character is overwritten), 905it should have the 906.Sy \&os 907capability. 908If the terminal is a printing terminal, 909with no soft copy unit, 910give it both 911.Sy \&hc 912and 913.Sy \&os . 914.Pf ( Sy \&os 915applies to storage scope terminals, 916such as the Tektronix 4010 series, 917as well as to hard copy and 918.Tn APL 919terminals.) 920If there is a code to move the cursor to the left edge of the current row, 921give this as 922.Sy \&cr . 923(Normally this will be carriage-return, 924.Sy \&^M . ) 925If there is a code to produce an audible signal (bell, beep, 926etc.), 927give this as 928.Sy \&bl . 929.Pp 930If there is a code (such as backspace) 931to move the cursor one position to the left, 932that capability should be given as 933.Sy \&le . 934Similarly, 935codes to move to the right, up, and down 936should be given as 937.Sy \&nd , 938.Sy \&up , 939and 940.Sy \&do , 941respectively. 942These 943.Em local cursor motions 944should not alter the text they pass over; 945for example, you would not normally use 946.Dq nd=\ \& 947unless the terminal has the 948.Sy \&os 949capability, 950because the space would erase the character moved over. 951.Pp 952A very important point here is that the local cursor motions encoded 953in 954.Nm 955have undefined behavior at the left and top edges of a 956.Tn CRT 957display. 958Programs should never attempt to backspace around the left edge, 959unless 960.Sy \&bw 961is given, and never attempt to go up off the top 962using local cursor motions. 963.Pp 964In order to scroll text up, 965a program goes to the bottom left corner of the screen and sends the 966.Sy \&sf 967(index) string. 968To scroll text down, 969a program goes to the top left corner of the screen and sends the 970.Sy \&sr 971(reverse index) string. 972The strings 973.Sy \&sf 974and 975.Sy \&sr 976have undefined behavior 977when not on their respective corners of the screen. 978Parameterized versions of the scrolling sequences are 979.Sy \&SF 980and 981.Sy \&SR , 982which have the same semantics as 983.Sy \&sf 984and 985.Sy \&sr 986except that they take one parameter 987and scroll that many lines. 988They also have undefined behavior 989except at the appropriate corner of the screen. 990.Pp 991The 992.Sy \&am 993capability tells whether the cursor sticks at the right 994edge of the screen when text is output there, 995but this does not necessarily apply to 996.Sy \&nd 997from the last column. 998Leftward local motion is defined from the left edge only when 999.Sy \&bw 1000is given; then an 1001.Sy \&le 1002from the left edge will move to the right edge of the previous row. 1003This is useful for drawing a box around the edge of the screen, 1004for example. 1005If the terminal has switch-selectable automatic margins, 1006the 1007.Nm 1008description usually assumes that this feature is on, 1009.Em i.e . , 1010.Sy \&am . 1011If the terminal has a command 1012that moves to the first column of the next line, 1013that command can be given as 1014.Sy \&nw 1015(newline). 1016It is permissible for this to clear the remainder of the current line, 1017so if the terminal has no correctly-working 1018.Tn \&CR 1019and 1020.Tn \&LF 1021it may still be possible to craft a working 1022.Sy \&nw 1023out of one or both of them. 1024.Pp 1025These capabilities suffice to describe hardcopy and 1026.Dq glass-tty 1027terminals. 1028Thus the Teletype model 33 is described as 1029.Bd -literal -offset indent 1030T3\||\|tty33\||\|33\||\|tty\||\|Teletype model 33:\e 1031 :bl=^G:co#72:cr=^M:do=^J:hc:os: 1032.Ed 1033.Pp 1034and the Lear Siegler 1035.Tn ADM Ns \-3 1036is described as 1037.Bd -literal -offset indent 1038l3\||\|adm3\||\|3\||\|LSI ADM-3:\e 1039:am:bl=^G:cl=^Z:co#80:cr=^M:do=^J:le=^H:li#24:sf=^J: 1040.Ed 1041.Ss Parameterized Strings 1042Cursor addressing and other strings requiring parameters 1043are described by a 1044parameterized string capability, with 1045.Xr printf 3 Ns \-like 1046escapes 1047.Sy \&%x 1048in it, 1049while other characters are passed through unchanged. 1050For example, to address the cursor the 1051.Sy \&cm 1052capability is given, using two parameters: the row and column to move to. 1053(Rows and columns are numbered from zero and refer to the physical screen 1054visible to the user, not to any unseen memory. 1055If the terminal has memory-relative cursor addressing, 1056that can be indicated by an analogous 1057.Sy \&CM 1058capability.) 1059.Pp 1060The 1061.Sy \&% 1062encodings have the following meanings: 1063.Bl -column xxxxx 1064.It "%% output `%'" 1065.It "%d output value as in" 1066.Xr printf 3 1067%d 1068.It "%2 output value as in" 1069.Xr printf 3 1070%2d 1071.It "%3 output value as in" 1072.Xr printf 3 1073%3d 1074.It "%. output value as in" 1075.Xr printf 3 1076%c 1077.It "%+" Ns Em x Ta No add 1078.Em x 1079to value, then do %. 1080.It "%>" Ns Em \&xy Ta No if 1081value > 1082.Em x 1083then add 1084.Em y , 1085no output 1086.It "%r reverse order of two parameters, no output" 1087.It "%i increment by one, no output" 1088.It "%n exclusive-or all parameters with 0140 (Datamedia 2500)" 1089.It "\&%B" Ta Tn BCD No "(16*(value/10)) + (value%10), no output" 1090.It "%D Reverse coding (value \- 2*(value%16)), no output (Delta Data)." 1091.El 1092.Pp 1093Consider the Hewlett-Packard 2645, which, to get to row 3 and column 12, needs 1094to be sent 1095.Dq \eE&a12c03Y 1096padded for 6 milliseconds. 1097Note that the order 1098of the row and column coordinates is reversed here 1099and that the row and column 1100are sent as two-digit integers. 1101Thus its 1102.Sy \&cm 1103capability is 1104.Dq Li cm=6\eE&%r%2c%2Y . 1105.Pp 1106The Datamedia 2500 needs the current row and column sent 1107encoded in binary using 1108.Dq \&%. . 1109Terminals that use 1110.Dq %.\& 1111need to be able to 1112backspace the cursor 1113.Pq Sy \&le 1114and to move the cursor up one line on the screen 1115.Pq Sy \&up . 1116This is necessary because it is not always safe to transmit 1117.Sy \&\en , 1118.Sy \&^D , 1119and 1120.Sy \&\er , 1121as the system may change or discard them. 1122(Programs using 1123.Nm 1124must set terminal modes so that tabs are not expanded, so 1125.Sy \&\et 1126is safe to send. 1127This turns out to be essential for the Ann Arbor 4080.) 1128.Pp 1129A final example is the Lear Siegler 1130.Tn ADM Ns \-3a , 1131which offsets row and column 1132by a blank character, thus 1133.Dq Li cm=\eE=%+ %+\ \& . 1134.Pp 1135Row or column absolute cursor addressing 1136can be given as single parameter capabilities 1137.Sy \&ch 1138(horizontal position absolute) and 1139.Sy \&cv 1140(vertical position absolute). 1141Sometimes these are shorter than the more general two-parameter sequence 1142(as with the Hewlett-Packard 2645) and can be used in preference to 1143.Sy \&cm . 1144If there are parameterized local motions 1145.Pf ( Em e.g . , 1146move 1147.Ar n 1148positions to the right) 1149these can be given as 1150.Sy \&DO , 1151.Sy \&LE , 1152.Sy \&RI , 1153and 1154.Sy \&UP 1155with a single parameter indicating how many positions to move. 1156These are primarily useful if the terminal does not have 1157.Sy \&cm , 1158such as the Tektronix 4025. 1159.Ss Cursor Motions 1160.Pp 1161If the terminal has a fast way to home the cursor 1162(to the very upper left corner of the screen), this can be given as 1163.Sy \&ho . 1164Similarly, a fast way of getting to the lower left-hand corner 1165can be given as 1166.Sy \&ll ; 1167this may involve going up with 1168.Sy \&up 1169from the home position, 1170but a program should never do this itself (unless 1171.Sy \&ll 1172does), because it can 1173make no assumption about the effect of moving up from the home position. 1174Note that the home position is the same as 1175cursor address (0,0): to the top left corner of the screen, not of memory. 1176(Therefore, the 1177.Dq \eEH 1178sequence on Hewlett-Packard terminals 1179cannot be used for 1180.Sy \&ho . ) 1181.Ss Area Clears 1182If the terminal can clear from the current position to the end of the 1183line, leaving the cursor where it is, this should be given as 1184.Sy \&ce . 1185If the terminal can clear from the current position to the end of the 1186display, this should be given as 1187.Sy \&cd . 1188.Sy \&cd 1189must only be invoked from the first column of a line. 1190(Therefore, 1191it can be simulated by a request to delete a large number of lines, 1192if a true 1193.Sy \&cd 1194is not available.) 1195.Ss Insert/Delete Line 1196If the terminal can open a new blank line 1197before the line containing the cursor, 1198this should be given as 1199.Sy \&al ; 1200this must be invoked only from the first 1201position of a line. 1202The cursor must then appear at the left of the newly blank line. 1203If the terminal can delete the line that the cursor is on, this 1204should be given as 1205.Sy \&dl ; 1206this must only be used from the first position on 1207the line to be deleted. 1208Versions of 1209.Sy \&al 1210and 1211.Sy \&dl 1212which take a single parameter 1213and insert or delete that many lines 1214can be given as 1215.Sy \&AL 1216and 1217.Sy \&DL . 1218If the terminal has a settable scrolling region 1219(like the VT100), 1220the command to set this can be described with the 1221.Sy \&cs 1222capability, 1223which takes two parameters: the top and bottom lines of the scrolling region. 1224The cursor position is, alas, undefined after using this command. 1225It is possible to get the effect of insert or delete line 1226using this command \(em the 1227.Sy \&sc 1228and 1229.Sy \&rc 1230(save and restore cursor) commands are also useful. 1231Inserting lines at the top or bottom of the screen can also be done using 1232.Sy \&sr 1233or 1234.Sy \&sf 1235on many terminals without a true insert/delete line, 1236and is often faster even on terminals with those features. 1237.Pp 1238If the terminal has the ability to define a window as part of memory 1239which all commands affect, it should be given as the parameterized string 1240.Sy \&wi . 1241The four parameters are the starting and ending lines in memory 1242and the starting and ending columns in memory, in that order. 1243(This 1244.Xr terminfo 5 1245capability is described for completeness. 1246It is unlikely that any 1247.Nm Ns \-using 1248program will support it.) 1249.Pp 1250If the terminal can retain display memory above the screen, then the 1251.Sy \&da 1252capability should be given; 1253if display memory can be retained 1254below, then 1255.Sy \&db 1256should be given. 1257These indicate 1258that deleting a line or scrolling may bring non-blank lines up from below 1259or that scrolling back with 1260.Sy \&sr 1261may bring down non-blank lines. 1262.Ss Insert/Delete Character 1263There are two basic kinds of intelligent terminals with respect to 1264insert/delete character that can be described using 1265.Nm . 1266The most common insert/delete character operations affect only the characters 1267on the current line and shift characters off the end of the line rigidly. 1268Other terminals, such as the Concept\-100 and the Perkin Elmer Owl, make 1269a distinction between typed and untyped blanks on the screen, shifting 1270upon an insert or delete only to an untyped blank on the screen which is 1271either eliminated or expanded to two untyped blanks. 1272You can determine 1273the kind of terminal you have by clearing the screen then typing 1274text separated by cursor motions. 1275Type 1276.Dq Li abc\ \ \ \ def 1277using local 1278cursor motions (not spaces) between the 1279.Dq abc 1280and the 1281.Dq def . 1282Then position the cursor before the 1283.Dq abc 1284and put the terminal in insert 1285mode. 1286If typing characters causes the rest of the line to shift 1287rigidly and characters to fall off the end, then your terminal does 1288not distinguish between blanks and untyped positions. 1289If the 1290.Dq abc 1291shifts over to the 1292.Dq def 1293which then move together around the end of the 1294current line and onto the next as you insert, then you have the second type of 1295terminal and should give the capability 1296.Sy \&in , 1297which stands for 1298.Dq insert null . 1299While these are two logically separate attributes 1300(one line 1301.Em \&vs . 1302multi-line insert mode, 1303and special treatment of untyped spaces), 1304we have seen no terminals whose insert 1305mode cannot be described with the single attribute. 1306.Pp 1307The 1308.Nm 1309entries can describe both terminals that have an insert mode and terminals 1310that send a simple sequence to open a blank position on the current line. 1311Give as 1312.Sy \&im 1313the sequence to get into insert mode. 1314Give as 1315.Sy \&ei 1316the sequence to leave insert mode. 1317Now give as 1318.Sy \&ic 1319any sequence that needs to be sent just before 1320each character to be inserted. 1321Most terminals with a true insert mode 1322will not give 1323.Sy \&ic ; 1324terminals that use a sequence to open a screen 1325position should give it here. 1326(If your terminal has both, 1327insert mode is usually preferable to 1328.Sy \&ic . 1329Do not give both unless the terminal actually requires both to be used 1330in combination.) 1331If post-insert padding is needed, give this as a number of milliseconds 1332in 1333.Sy \&ip 1334(a string option). 1335Any other sequence that may need to be 1336sent after insertion of a single character can also be given in 1337.Sy \&ip . 1338If your terminal needs to be placed into an `insert mode' 1339and needs a special code preceding each inserted character, 1340then both 1341.Sy \&im Ns / Sy \&ei 1342and 1343.Sy \&ic 1344can be given, and both will be used. 1345The 1346.Sy \&IC 1347capability, with one parameter 1348.Em n , 1349will repeat the effects of 1350.Sy \&ic 1351.Em n 1352times. 1353.Pp 1354It is occasionally necessary to move around while in insert mode 1355to delete characters on the same line 1356.Pf ( Em e.g . , 1357if there is a tab after 1358the insertion position). 1359If your terminal allows motion while in 1360insert mode, you can give the capability 1361.Sy \&mi 1362to speed up inserting 1363in this case. 1364Omitting 1365.Sy \&mi 1366will affect only speed. 1367Some terminals 1368(notably Datamedia's) must not have 1369.Sy \&mi 1370because of the way their 1371insert mode works. 1372.Pp 1373Finally, you can specify 1374.Sy \&dc 1375to delete a single character, 1376.Sy \&DC 1377with one parameter 1378.Em n 1379to delete 1380.Em n 1381characters, 1382and delete mode by giving 1383.Sy \&dm 1384and 1385.Sy \&ed 1386to enter and exit delete mode 1387(which is any mode the terminal needs to be placed in for 1388.Sy \&dc 1389to work). 1390.Ss Highlighting, Underlining, and Visible Bells 1391If your terminal has one or more kinds of display attributes, 1392these can be represented in a number of different ways. 1393You should choose one display form as 1394.Em standout mode , 1395representing a good high-contrast, easy-on-the-eyes format 1396for highlighting error messages and other attention getters. 1397(If you have a choice, reverse video plus half-bright is good, 1398or reverse video alone.) 1399The sequences to enter and exit standout mode 1400are given as 1401.Sy \&so 1402and 1403.Sy \&se , 1404respectively. 1405If the code to change into or out of standout 1406mode leaves one or even two blank spaces or garbage characters on the screen, 1407as the 1408.Tn TVI 1409912 and Teleray 1061 do, 1410then 1411.Sy \&sg 1412should be given to tell how many characters are left. 1413.Pp 1414Codes to begin underlining and end underlining can be given as 1415.Sy \&us 1416and 1417.Sy \&ue , 1418respectively. 1419Underline mode change garbage is specified by 1420.Sy \&ug , 1421similar to 1422.Sy \&sg . 1423If the terminal has a code to underline the current character and move 1424the cursor one position to the right, 1425such as the Microterm Mime, 1426this can be given as 1427.Sy \&uc . 1428.Pp 1429Other capabilities to enter various highlighting modes include 1430.Sy \&mb 1431(blinking), 1432.Sy \&md 1433(bold or extra bright), 1434.Sy \&mh 1435(dim or half-bright), 1436.Sy \&mk 1437(blanking or invisible text), 1438.Sy \&mp 1439(protected), 1440.Sy \&mr 1441(reverse video), 1442.Sy \&me 1443(turn off 1444.Em all 1445attribute modes), 1446.Sy \&as 1447(enter alternate character set mode), and 1448.Sy \&ae 1449(exit alternate character set mode). 1450Turning on any of these modes singly may or may not turn off other modes. 1451.Pp 1452If there is a sequence to set arbitrary combinations of mode, 1453this should be given as 1454.Sy \&sa 1455(set attributes), taking 9 parameters. 1456Each parameter is either 0 or 1, 1457as the corresponding attributes is on or off. 1458The 9 parameters are, in order: standout, underline, reverse, blink, 1459dim, bold, blank, protect, and alternate character set. 1460Not all modes need be supported by 1461.Sy \&sa , 1462only those for which corresponding attribute commands exist. 1463(It is unlikely that a 1464.Nm Ns \-using 1465program will support this capability, which is defined for compatibility 1466with 1467.Xr terminfo 5 . ) 1468.Pp 1469Terminals with the 1470.Dq magic cookie 1471glitches 1472.Pf ( Sy \&sg 1473and 1474.Sy \&ug ) , 1475rather than maintaining extra attribute bits for each character cell, 1476instead deposit special 1477.Dq cookies , 1478or 1479.Dq garbage characters , 1480when they receive mode-setting sequences, 1481which affect the display algorithm. 1482.Pp 1483Some terminals, 1484such as the Hewlett-Packard 2621, 1485automatically leave standout 1486mode when they move to a new line or when the cursor is addressed. 1487Programs using standout mode 1488should exit standout mode on such terminals 1489before moving the cursor or sending a newline. 1490On terminals where this is not a problem, 1491the 1492.Sy \&ms 1493capability should be present 1494to say that this overhead is unnecessary. 1495.Pp 1496If the terminal has 1497a way of flashing the screen to indicate an error quietly 1498(a bell replacement), 1499this can be given as 1500.Sy \&vb ; 1501it must not move the cursor. 1502.Pp 1503If the cursor needs to be made more visible than normal 1504when it is not on the bottom line 1505(to change, for example, a non-blinking underline into an easier-to-find 1506block or blinking underline), 1507give this sequence as 1508.Sy \&vs . 1509If there is a way to make the cursor completely invisible, give that as 1510.Sy \&vi . 1511The capability 1512.Sy \&ve , 1513which undoes the effects of both of these modes, 1514should also be given. 1515.Pp 1516If your terminal correctly displays underlined characters 1517(with no special codes needed) 1518even though it does not overstrike, 1519then you should give the capability 1520.Sy \&ul . 1521If overstrikes are erasable with a blank, 1522this should be indicated by giving 1523.Sy \&eo . 1524.Ss Keypad 1525If the terminal has a keypad that transmits codes when the keys are pressed, 1526this information can be given. 1527Note that it is not possible to handle 1528terminals where the keypad only works in local mode 1529(this applies, for example, to the unshifted Hewlett-Packard 2621 keys). 1530If the keypad can be set to transmit or not transmit, 1531give these codes as 1532.Sy \&ks 1533and 1534.Sy \&ke . 1535Otherwise the keypad is assumed to always transmit. 1536The codes sent by the left-arrow, right-arrow, up-arrow, down-arrow, 1537and home keys can be given as 1538.Sy \&kl , 1539.Sy \&kr , 1540.Sy \&ku , 1541.Sy \&kd , 1542and 1543.Sy \&kh , 1544respectively. 1545If there are function keys such as f0, f1, ..., f9, the codes they send 1546can be given as 1547.Sy \&k0 , 1548.Sy \&k1 , 1549\&..., 1550.Sy \&k9 . 1551If these keys have labels other than the default f0 through f9, the labels 1552can be given as 1553.Sy \&l0 , 1554.Sy \&l1 , 1555\&..., 1556.Sy \&l9 . 1557The codes transmitted by certain other special keys can be given: 1558.Sy \&kH 1559(home down), 1560.Sy \&kb 1561(backspace), 1562.Sy \&ka 1563(clear all tabs), 1564.Sy \&kt 1565(clear the tab stop in this column), 1566.Sy \&kC 1567(clear screen or erase), 1568.Sy \&kD 1569(delete character), 1570.Sy \&kL 1571(delete line), 1572.Sy \&kM 1573(exit insert mode), 1574.Sy \&kE 1575(clear to end of line), 1576.Sy \&kS 1577(clear to end of screen), 1578.Sy \&kI 1579(insert character or enter insert mode), 1580.Sy \&kA 1581(insert line), 1582.Sy \&kN 1583(next page), 1584.Sy \&kP 1585(previous page), 1586.Sy \&kF 1587(scroll forward/down), 1588.Sy \&kR 1589(scroll backward/up), and 1590.Sy \&kT 1591(set a tab stop in this column). 1592In addition, if the keypad has a 3 by 3 array of keys 1593including the four arrow keys, then the other five keys can be given as 1594.Sy \&K1 , 1595.Sy \&K2 , 1596.Sy \&K3 , 1597.Sy \&K4 , 1598and 1599.Sy \&K5 . 1600These keys are useful when the effects of a 3 by 3 directional pad are needed. 1601The obsolete 1602.Sy \&ko 1603capability formerly used to describe 1604.Dq other 1605function keys has been 1606completely supplanted by the above capabilities. 1607.Pp 1608The 1609.Sy \&ma 1610entry is also used to indicate arrow keys on terminals that have 1611single-character arrow keys. 1612It is obsolete but still in use in 1613version 2 of 1614.Sy \&vi 1615which must be run on some minicomputers due to 1616memory limitations. 1617This field is redundant with 1618.Sy \&kl , 1619.Sy \&kr , 1620.Sy \&ku , 1621.Sy \&kd , 1622and 1623.Sy \&kh . 1624It consists of groups of two characters. 1625In each group, the first character is what an arrow key sends, and the 1626second character is the corresponding 1627.Sy \&vi 1628command. 1629These commands are 1630.Ar h 1631for 1632.Sy \&kl , 1633.Ar j 1634for 1635.Sy \&kd , 1636.Ar k 1637for 1638.Sy \&ku , 1639.Ar l 1640for 1641.Sy \&kr , 1642and 1643.Ar H 1644for 1645.Sy \&kh . 1646For example, the Mime would have 1647.Dq Li ma=^Hh^Kj^Zk^Xl 1648indicating arrow keys left (^H), down (^K), up (^Z), and right (^X). 1649(There is no home key on the Mime.) 1650.Ss Tabs and Initialization 1651If the terminal needs to be in a special mode when running 1652a program that uses these capabilities, 1653the codes to enter and exit this mode can be given as 1654.Sy \&ti 1655and 1656.Sy \&te . 1657This arises, for example, from terminals like the Concept with more than 1658one page of memory. 1659If the terminal has only memory-relative cursor addressing and not 1660screen-relative cursor addressing, 1661a screen-sized window must be fixed into 1662the display for cursor addressing to work properly. 1663This is also used for the Tektronix 4025, where 1664.Sy \&ti 1665sets the command character to be the one used by 1666.Nm . 1667.Pp 1668Other capabilities 1669include 1670.Sy \&is , 1671an initialization string for the terminal, 1672and 1673.Sy \&if , 1674the name of a file containing long initialization strings. 1675These strings are expected to set the terminal into modes 1676consistent with the rest of the 1677.Nm 1678description. 1679They are normally sent to the terminal by the 1680.Xr tset 1 1681program each time the user logs in. 1682They will be printed in the following order: 1683.Sy \&is ; 1684setting tabs using 1685.Sy \&ct 1686and 1687.Sy \&st ; 1688and finally 1689.Sy \&if . 1690.Pf ( Xr Terminfo 1691uses 1692.Sy \&i\&1-i2 1693instead of 1694.Sy \&is 1695and runs the program 1696.Sy \&iP 1697and prints 1698.Sy "\&i\&3" 1699after the other initializations.) 1700A pair of sequences that does a harder reset from a totally unknown state 1701can be analogously given as 1702.Sy \&rs 1703and 1704.Sy \&if . 1705These strings are output by the 1706.Xr reset 1 1707program, which is used when the terminal gets into a wedged state. 1708.Pf ( Xr Terminfo 1709uses 1710.Sy "\&r1-r3" 1711instead of 1712.Sy \&rs . ) 1713Commands are normally placed in 1714.Sy \&rs 1715and 1716.Sy \&rf 1717only if they produce annoying effects on the screen and are not necessary 1718when logging in. 1719For example, the command to set the VT100 into 80-column mode 1720would normally be part of 1721.Sy \&is , 1722but it causes an annoying glitch of the screen and is not normally needed 1723since the terminal is usually already in 80-column mode. 1724.Pp 1725If the terminal has hardware tabs, 1726the command to advance to the next tab stop can be given as 1727.Sy \&ta 1728(usually 1729.Sy \&^I ) . 1730A 1731.Dq backtab 1732command which moves leftward to the previous tab stop 1733can be given as 1734.Sy \&bt . 1735By convention, 1736if the terminal driver modes indicate that tab stops are being expanded 1737by the computer rather than being sent to the terminal, 1738programs should not use 1739.Sy \&ta 1740or 1741.Sy \&bt 1742even if they are present, 1743since the user may not have the tab stops properly set. 1744If the terminal has hardware tabs that are initially set every 1745.Ar n 1746positions when the terminal is powered up, then the numeric parameter 1747.Sy \&it 1748is given, showing the number of positions between tab stops. 1749This is normally used by the 1750.Xr tset 1 1751command to determine whether to set the driver mode for hardware tab 1752expansion, and whether to set the tab stops. 1753If the terminal has tab stops that can be saved in nonvolatile memory, the 1754.Nm 1755description can assume that they are properly set. 1756.Pp 1757If there are commands to set and clear tab stops, they can be given as 1758.Sy \&ct 1759(clear all tab stops) and 1760.Sy \&st 1761(set a tab stop in the current column of every row). 1762If a more complex sequence is needed to set the tabs than can be 1763described by this, the sequence can be placed in 1764.Sy \&is 1765or 1766.Sy \&if . 1767.Ss Delays 1768Certain capabilities control padding in the terminal driver. 1769These are primarily needed by hardcopy terminals and are used by the 1770.Xr tset 1 1771program to set terminal driver modes appropriately. 1772Delays embedded in the capabilities 1773.Sy \&cr , 1774.Sy \&sf , 1775.Sy \&le , 1776.Sy \&ff , 1777and 1778.Sy \&ta 1779will cause the appropriate delay bits to be set in the terminal driver. 1780If 1781.Sy \&pb 1782(padding baud rate) is given, these values can be ignored at baud rates 1783below the value of 1784.Sy \&pb . 1785For 1786.Bx 4.2 1787.Xr tset 1 , 1788the delays are given as numeric capabilities 1789.Sy \&dC , 1790.Sy \&dN , 1791.Sy \&dB , 1792.Sy \&dF , 1793and 1794.Sy \&dT 1795instead. 1796.Ss Miscellaneous 1797If the terminal requires other than a 1798.Dv NUL 1799(zero) character as a pad, 1800this can be given as 1801.Sy \&pc . 1802Only the first character of the 1803.Sy \&pc 1804string is used. 1805.Pp 1806If the terminal has commands to save and restore the position of the 1807cursor, give them as 1808.Sy \&sc 1809and 1810.Sy \&rc . 1811.Pp 1812If the terminal has an extra 1813.Dq status line 1814that is not normally used by 1815software, this fact can be indicated. 1816If the status line is viewed as an extra line below the bottom line, 1817then the capability 1818.Sy \&hs 1819should be given. 1820Special strings to go to a position in the status line and to return 1821from the status line can be given as 1822.Sy \&ts 1823and 1824.Sy \&fs . 1825.Pf ( Xr \&fs 1826must leave the cursor position in the same place that it was before 1827.Sy \&ts . 1828If necessary, the 1829.Sy \&sc 1830and 1831.Sy \&rc 1832strings can be included in 1833.Sy \&ts 1834and 1835.Sy \&fs 1836to get this effect.) 1837The capability 1838.Sy \&ts 1839takes one parameter, which is the column number of the status line 1840to which the cursor is to be moved. 1841If escape sequences and other special commands such as tab work while in 1842the status line, the flag 1843.Sy \&es 1844can be given. 1845A string that turns off the status line (or otherwise erases its contents) 1846should be given as 1847.Sy \&ds . 1848The status line is normally assumed to be the same width as the 1849rest of the screen, 1850.Em i.e . , 1851.Sy \&co . 1852If the status line is a different width (possibly because the terminal 1853does not allow an entire line to be loaded), then its width in columns 1854can be indicated with the numeric parameter 1855.Sy \&ws . 1856.Pp 1857If the terminal can move up or down half a line, this can be 1858indicated with 1859.Sy \&hu 1860(half-line up) and 1861.Sy \&hd 1862(half-line down). 1863This is primarily useful for superscripts and subscripts on hardcopy 1864terminals. 1865If a hardcopy terminal can eject to the next page (form feed), 1866give this as 1867.Sy \&ff 1868(usually 1869.Sy \&^L ) . 1870.Pp 1871If there is a command to repeat a given character a given number of times 1872(to save time transmitting a large number of identical characters), 1873this can be indicated with the parameterized string 1874.Sy \&rp . 1875The first parameter is the character to be repeated and the second is 1876the number of times to repeat it. 1877(This is a 1878.Xr terminfo 5 1879feature that is unlikely to be supported by a program that uses 1880.Nm . ) 1881.Pp 1882If the terminal has a settable command character, such as the 1883Tektronix 4025, this can be indicated with 1884.Sy \&CC . 1885A prototype command character is chosen which is used in all capabilities. 1886This character is given in the 1887.Sy \&CC 1888capability to identify it. 1889The following convention is supported on some 1890.Ux 1891systems: 1892The environment is to be searched for a 1893.Ev \&CC 1894variable, 1895and if found, 1896all occurrences of the prototype character are replaced by the character 1897in the environment variable. 1898This use of the 1899.Ev \&CC 1900environment variable 1901is a very bad idea, as it conflicts with 1902.Xr make 1 . 1903.Pp 1904Terminal descriptions that do not represent a specific kind of known 1905terminal, such as 1906.Em switch , 1907.Em dialup , 1908.Em patch , 1909and 1910.Em network , 1911should include the 1912.Sy \&gn 1913(generic) capability so that programs can complain that they do not know 1914how to talk to the terminal. 1915(This capability does not apply to 1916.Em virtual 1917terminal descriptions for which the escape sequences are known.) 1918.Pp 1919If the terminal uses xoff/xon 1920.Pq Tn DC3 Ns / Ns Tn DC1 1921handshaking for flow control, give 1922.Sy \&xo . 1923Padding information should still be included so that routines can make 1924better decisions about costs, but actual pad characters will not be 1925transmitted. 1926.Pp 1927If the terminal has a 1928.Dq meta key 1929which acts as a shift key, setting the 19308th bit of any character transmitted, then this fact can be indicated with 1931.Sy \&km . 1932Otherwise, software will assume that the 8th bit is parity and it will 1933usually be cleared. 1934If strings exist to turn this 1935.Dq meta mode 1936on and off, they can be given as 1937.Sy \&mm 1938and 1939.Sy \&mo . 1940.Pp 1941If the terminal has more lines of memory than will fit on the screen at once, 1942the number of lines of memory can be indicated with 1943.Sy \&lm . 1944An explicit value of 0 indicates that the number of lines is not fixed, 1945but that there is still more memory than fits on the screen. 1946.Pp 1947If the terminal is one of those supported by the 1948.Ux 1949system virtual 1950terminal protocol, the terminal number can be given as 1951.Sy \&vt . 1952.Pp 1953Media copy strings which control an auxiliary printer 1954connected to the terminal can be given as 1955.Sy \&ps : 1956print the contents of the screen; 1957.Sy \&pf : 1958turn off the printer; and 1959.Sy \&po : 1960turn on the printer. 1961When the printer is on, all text sent to the terminal will be sent to the 1962printer. 1963It is undefined whether the text is also displayed on the terminal screen 1964when the printer is on. 1965A variation 1966.Sy \&pO 1967takes one parameter and leaves the printer on for as many characters as the 1968value of the parameter, then turns the printer off. 1969The parameter should not exceed 255. 1970All text, including 1971.Sy \&pf , 1972is transparently passed to the printer while 1973.Sy \&pO 1974is in effect. 1975.Pp 1976Strings to program function keys can be given as 1977.Sy \&pk , 1978.Sy \&pl , 1979and 1980.Sy \&px . 1981Each of these strings takes two parameters: the function key number 1982to program (from 0 to 9) and the string to program it with. 1983Function key numbers out of this range may program undefined keys 1984in a terminal-dependent manner. 1985The differences among the capabilities are that 1986.Sy \&pk 1987causes pressing the given key to be the same as the user typing the given 1988string; 1989.Sy \&pl 1990causes the string to be executed by the terminal in local mode; 1991and 1992.Sy \&px 1993causes the string to be transmitted to the computer. 1994Unfortunately, due to lack of a definition for string parameters in 1995.Nm , 1996only 1997.Xr terminfo 5 1998supports these capabilities. 1999.Pp 2000For the 2001.Xr xterm 1 2002terminal emulator the traditional behavior in 2003.Fx 2004when exiting a pager such as 2005.Xr less 1 2006or 2007.Xr more 1 , 2008or an editor such as 2009.Xr vi 1 2010is 2011.Em NOT 2012to clear the screen after the program exits. 2013If you prefer to clear the screen there are a number of 2014.Dq xterm-clear 2015entries that add this capability in the 2016.Nm 2017file that you can use directly, or as examples. 2018.Ss Glitches and Braindamage 2019Hazeltine terminals, which do not allow `~' characters to be displayed, 2020should indicate 2021.Sy \&hz . 2022.Pp 2023The 2024.Sy \&nc 2025capability, now obsolete, formerly indicated Datamedia terminals, 2026which echo 2027.Sy \&\er \en 2028for 2029carriage return then ignore a following linefeed. 2030.Pp 2031Terminals that ignore a linefeed immediately after an 2032.Sy \&am 2033wrap, such as the Concept, should indicate 2034.Sy \&xn . 2035.Pp 2036If 2037.Sy \&ce 2038is required to get rid of standout 2039(instead of merely writing normal text on top of it), 2040.Sy \&xs 2041should be given. 2042.Pp 2043Teleray terminals, where tabs turn all characters moved over to blanks, 2044should indicate 2045.Sy \&xt 2046(destructive tabs). 2047This glitch is also taken to mean that it is not possible 2048to position the cursor on top of a 2049.Dq magic cookie , 2050and that 2051to erase standout mode it is necessary to use delete and insert line. 2052.Pp 2053The Beehive Superbee, which is unable to correctly transmit the 2054.Dv ESC 2055or 2056.Sy \&^C 2057characters, has 2058.Sy \&xb , 2059indicating that the 2060.Dq \&f\&1 2061key is used for 2062.Dv ESC 2063and 2064.Dq \&f\&2 2065for ^C. 2066(Only certain Superbees have this problem, depending on the 2067.Tn ROM . ) 2068.Pp 2069Other specific terminal problems may be corrected by adding more 2070capabilities of the form 2071.Sy x Em x . 2072.Ss Similar Terminals 2073If there are two very similar terminals, 2074one can be defined as being just like the other with certain exceptions. 2075The string capability 2076.Sy \&tc 2077can be given 2078with the name of the similar terminal. 2079This capability must be 2080.Em last , 2081and the combined length of the entries 2082must not exceed 1024. 2083The capabilities given before 2084.Sy \&tc 2085override those in the terminal type invoked by 2086.Sy \&tc . 2087A capability can be canceled by placing 2088.Sy \&xx@ 2089to the left of the 2090.Sy \&tc 2091invocation, where 2092.Sy \&xx 2093is the capability. 2094For example, the entry 2095.Bd -literal -offset indent 2096hn\||\|2621\-nl:ks@:ke@:tc=2621: 2097.Ed 2098.Pp 2099defines a 2100.Dq 2621\-nl 2101that does not have the 2102.Sy \&ks 2103or 2104.Sy \&ke 2105capabilities, 2106hence does not turn on the function key labels when in visual mode. 2107This is useful for different modes for a terminal, or for different 2108user preferences. 2109.Sh FILES 2110.Bl -tag -width /usr/share/misc/termcap.db -compact 2111.It Pa /usr/share/misc/termcap 2112File containing terminal descriptions. 2113.It Pa /usr/share/misc/termcap.db 2114Hash database file containing terminal descriptions (see 2115.Xr cap_mkdb 1 ) . 2116.El 2117.Sh SEE ALSO 2118.Xr cap_mkdb 1 , 2119.Xr ex 1 , 2120.Xr more 1 , 2121.Xr tset 1 , 2122.Xr ul 1 , 2123.Xr vi 1 , 2124.Xr xterm 1 , 2125.Xr ncurses 3 , 2126.Xr printf 3 , 2127.Xr termcap 3 , 2128.Xr term 5 2129.Sh CAVEATS AND BUGS 2130The 2131.Em Note : 2132.Nm 2133functions 2134were replaced by 2135.Xr terminfo 5 2136in 2137.At V 2138Release 2.0. 2139The transition will be relatively painless if capabilities flagged as 2140.Dq obsolete 2141are avoided. 2142.Pp 2143Lines and columns are now stored by the kernel as well as in the termcap 2144entry. 2145Most programs now use the kernel information primarily; the information 2146in this file is used only if the kernel does not have any information. 2147.Pp 2148The 2149.Xr \&vi 1 2150program allows only 256 characters for string capabilities, and the routines 2151in 2152.Xr termlib 3 2153do not check for overflow of this buffer. 2154The total length of a single entry (excluding only escaped newlines) 2155may not exceed 1024. 2156.Pp 2157Not all programs support all entries. 2158.Sh HISTORY 2159The 2160.Nm 2161file format appeared in 2162.Bx 3 . 2163