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terminfo(5)                      File Formats                      terminfo(5)


       terminfo - terminal capability database




       Terminfo  is  a  database describing terminals, used by screen-oriented
       programs such as nvi(1), lynx(1), mutt(1), and  other  curses  applica-
       tions,  using  high-level calls to libraries such as curses(3X).  It is
       also used via low-level calls by non-curses applications which  may  be
       screen-oriented (such as clear(1)) or non-screen (such as tabs(1)).

       Terminfo describes terminals by giving a set of capabilities which they
       have, by specifying how to perform screen operations, and by specifying
       padding requirements and initialization sequences.

       This manual describes ncurses version 6.3 (patch 20211021).

   Terminfo Entry Syntax
       Entries in terminfo consist of a sequence of fields:

       o   Each  field  ends  with a comma "," (embedded commas may be escaped
           with a backslash or written as "\054").

       o   White space between fields is ignored.

       o   The first field in a terminfo entry begins in the first column.

       o   Newlines and leading whitespace (spaces or tabs) may  be  used  for
           formatting  entries for readability.  These are removed from parsed

           The infocmp -f and -W options rely on this to  format  if-then-else
           expressions,  or to enforce maximum line-width.  The resulting for-
           matted terminal description can be read by tic.

       o   The first field for each terminal gives the names which  are  known
           for the terminal, separated by "|" characters.

           The first name given is the most common abbreviation for the termi-
           nal (its primary name), the last name given should be a  long  name
           fully  identifying  the terminal (see longname(3X)), and all others
           are treated as synonyms (aliases) for the primary terminal name.

           X/Open Curses advises that all names but  the  last  should  be  in
           lower  case  and  contain no blanks; the last name may well contain
           upper case and blanks for readability.

           This implementation is not so strict; it allows mixed case  in  the
           primary name and aliases.  If the last name has no embedded blanks,
           it allows that to be both an alias and a  verbose  name  (but  will
           warn about this ambiguity).

       o   Lines  beginning with a "#" in the first column are treated as com-

           While comment lines are legal at any point, the output of captoinfo
           and  infotocap  (aliases  for tic) will move comments so they occur
           only between entries.

       Terminal names (except for the last, verbose entry)  should  be  chosen
       using the following conventions.  The particular piece of hardware mak-
       ing up the terminal should have a root name, thus "hp2621".  This  name
       should not contain hyphens.  Modes that the hardware can be in, or user
       preferences, should be indicated by appending a hyphen and a mode  suf-
       fix.  Thus, a vt100 in 132-column mode would be vt100-w.  The following
       suffixes should be used where possible:

            Suffix                  Meaning                   Example
            -nn      Number of lines on the screen            aaa-60
            -np      Number of pages of memory                c100-4p
            -am      With automargins (usually the default)   vt100-am
            -m       Mono mode; suppress color                ansi-m
            -mc      Magic cookie; spaces when highlighting   wy30-mc
            -na      No arrow keys (leave them in local)      c100-na
            -nam     Without automatic margins                vt100-nam
            -nl      No status line                           att4415-nl
            -ns      No status line                           hp2626-ns
            -rv      Reverse video                            c100-rv
            -s       Enable status line                       vt100-s
            -vb      Use visible bell instead of beep         wy370-vb
            -w       Wide mode (> 80 columns, usually 132)    vt100-w

       For more on terminal naming conventions, see the term(7) manual page.

   Terminfo Capabilities Syntax
       The terminfo entry consists of  several  capabilities,  i.e.,  features
       that  the  terminal  has, or methods for exercising the terminal's fea-

       After the first field (giving the name(s) of the terminal entry), there
       should be one or more capability fields.  These are boolean, numeric or
       string names with corresponding values:

       o   Boolean capabilities are true  when  present,  false  when  absent.
           There is no explicit value for boolean capabilities.

       o   Numeric  capabilities  have  a  "#"  following  the  name,  then an
           unsigned decimal integer value.

       o   String capabilities have a "=" following the name, then  an  string
           of characters making up the capability value.

           String  capabilities  can be split into multiple lines, just as the
           fields comprising a terminal  entry  can  be  split  into  multiple
           lines.   While  blanks  between fields are ignored, blanks embedded
           within a string value are retained, except for leading blanks on  a

       Any  capability  can  be  canceled,  i.e., suppressed from the terminal
       entry, by following its name with "@" rather than a capability value.

   Similar Terminals
       If there are two very similar  terminals,  one  (the  variant)  can  be
       defined  as  being  just  like the other (the base) with certain excep-
       tions.  In the definition of the variant, the string capability use can
       be given with the name of the base terminal:

       o   The  capabilities  given before use override those in the base type
           named by use.

       o   If there are multiple use capabilities, they are merged in  reverse
           order.   That  is,  the rightmost use reference is processed first,
           then the one to its left, and so forth.

       o   Capabilities given explicitly in the entry override  those  brought
           in by use references.

       A capability can be canceled by placing xx@ to the left of the use ref-
       erence that imports it, where xx is the capability.  For  example,  the

              2621-nl, smkx@, rmkx@, use=2621,

       defines a 2621-nl that does not have the smkx or rmkx capabilities, and
       hence does not turn on the function key labels  when  in  visual  mode.
       This  is  useful  for  different modes for a terminal, or for different
       user preferences.

       An entry included via use can contain canceled capabilities, which have
       the  same  effect as if those cancels were inline in the using terminal

   Predefined Capabilities
       The following is a complete table of the  capabilities  included  in  a
       terminfo  description  block  and available to terminfo-using code.  In
       each line of the table,

       The variable is the name by  which  the  programmer  (at  the  terminfo
       level) accesses the capability.

       The  capname is the short name used in the text of the database, and is
       used by a person updating the database.   Whenever  possible,  capnames
       are chosen to be the same as or similar to the ANSI X3.64-1979 standard
       (now superseded by  ECMA-48,  which  uses  identical  or  very  similar
       names).   Semantics  are also intended to match those of the specifica-

       The termcap code is the old termcap capability name (some  capabilities
       are new, and have names which termcap did not originate).

       Capability  names have no hard length limit, but an informal limit of 5
       characters has been adopted to keep them short and to allow the tabs in
       the source file Caps to line up nicely.

       Finally,  the description field attempts to convey the semantics of the
       capability.  You may find some codes in the description field:

       (P)    indicates that padding may be specified

       #[1-9] in the description field indicates that  the  string  is  passed
              through tparm(3X) with parameters as given (#i).

              If  no  parameters  are  listed  in the description, passing the
              string through tparm(3X) may give unexpected results,  e.g.,  if
              it contains percent (%%) signs.

       (P*)   indicates  that  padding may vary in proportion to the number of
              lines affected

       (#i)   indicates the ith parameter.

       These are the boolean capabilities:

                   Variable           Cap-    TCap       Description
                   Booleans           name    Code
           auto_left_margin           bw      bw     cub1 wraps from col-
                                                     umn 0 to last column
           auto_right_margin          am      am     terminal has auto-
                                                     matic margins

           back_color_erase           bce     ut     screen erased with
                                                     background color
           can_change                 ccc     cc     terminal can re-
                                                     define existing col-
           ceol_standout_glitch       xhp     xs     standout not erased
                                                     by overwriting (hp)
           col_addr_glitch            xhpa    YA     only positive motion
                                                     for hpa/mhpa caps
           cpi_changes_res            cpix    YF     changing character
                                                     pitch changes reso-
           cr_cancels_micro_mode      crxm    YB     using cr turns off
                                                     micro mode
           dest_tabs_magic_smso       xt      xt     tabs destructive,
                                                     magic so char
           eat_newline_glitch         xenl    xn     newline ignored
                                                     after 80 cols (con-
           erase_overstrike           eo      eo     can erase over-
                                                     strikes with a blank
           generic_type               gn      gn     generic line type
           hard_copy                  hc      hc     hardcopy terminal
           hard_cursor                chts    HC     cursor is hard to
           has_meta_key               km      km     Has a meta key
                                                     (i.e., sets 8th-bit)
           has_print_wheel            daisy   YC     printer needs opera-
                                                     tor to change char-
                                                     acter set
           has_status_line            hs      hs     has extra status
           hue_lightness_saturation   hls     hl     terminal uses only
                                                     HLS color notation
           insert_null_glitch         in      in     insert mode distin-
                                                     guishes nulls
           lpi_changes_res            lpix    YG     changing line pitch
                                                     changes resolution
           memory_above               da      da     display may be
                                                     retained above the
           memory_below               db      db     display may be
                                                     retained below the
           move_insert_mode           mir     mi     safe to move while
                                                     in insert mode
           move_standout_mode         msgr    ms     safe to move while
                                                     in standout mode
           needs_xon_xoff             nxon    nx     padding will not
                                                     work, xon/xoff
           no_esc_ctlc                xsb     xb     beehive (f1=escape,
                                                     f2=ctrl C)
           no_pad_char                npc     NP     pad character does
                                                     not exist
           non_dest_scroll_region     ndscr   ND     scrolling region is
           non_rev_rmcup              nrrmc   NR     smcup does not
                                                     reverse rmcup
           over_strike                os      os     terminal can over-
           prtr_silent                mc5i    5i     printer will not
                                                     echo on screen

           row_addr_glitch            xvpa    YD     only positive motion
                                                     for vpa/mvpa caps
           semi_auto_right_margin     sam     YE     printing in last
                                                     column causes cr
           status_line_esc_ok         eslok   es     escape can be used
                                                     on the status line
           tilde_glitch               hz      hz     cannot print ~'s
           transparent_underline      ul      ul     underline character
           xon_xoff                   xon     xo     terminal uses
                                                     xon/xoff handshaking

       These are the numeric capabilities:

                  Variable         Cap-     TCap       Description
                   Numeric         name     Code
             columns               cols     co     number of columns in
                                                   a line
             init_tabs             it       it     tabs initially every
                                                   # spaces
             label_height          lh       lh     rows in each label
             label_width           lw       lw     columns in each
             lines                 lines    li     number of lines on
                                                   screen or page
             lines_of_memory       lm       lm     lines of memory if >
                                                   line. 0 means varies
             magic_cookie_glitch   xmc      sg     number of blank
                                                   characters left by
                                                   smso or rmso
             max_attributes        ma       ma     maximum combined
                                                   attributes terminal
                                                   can handle
             max_colors            colors   Co     maximum number of
                                                   colors on screen
             max_pairs             pairs    pa     maximum number of
                                                   color-pairs on the
             maximum_windows       wnum     MW     maximum number of
                                                   definable windows
             no_color_video        ncv      NC     video attributes
                                                   that cannot be used
                                                   with colors
             num_labels            nlab     Nl     number of labels on
             padding_baud_rate     pb       pb     lowest baud rate
                                                   where padding needed
             virtual_terminal      vt       vt     virtual terminal
                                                   number (CB/unix)
             width_status_line     wsl      ws     number of columns in
                                                   status line

       The  following  numeric  capabilities  are  present  in the SVr4.0 term
       structure, but are not yet documented in the man page.   They  came  in
       with SVr4's printer support.

                   Variable         Cap-     TCap       Description
                   Numeric          name     Code
             bit_image_entwining    bitwin   Yo     number of passes for
                                                    each bit-image row
             bit_image_type         bitype   Yp     type of bit-image

             buffer_capacity        bufsz    Ya     numbers of bytes
                                                    buffered before
             buttons                btns     BT     number of buttons on
             dot_horz_spacing       spinh    Yc     spacing of dots hor-
                                                    izontally in dots
                                                    per inch
             dot_vert_spacing       spinv    Yb     spacing of pins ver-
                                                    tically in pins per
             max_micro_address      maddr    Yd     maximum value in
             max_micro_jump         mjump    Ye     maximum value in
             micro_col_size         mcs      Yf     character step size
                                                    when in micro mode
             micro_line_size        mls      Yg     line step size when
                                                    in micro mode
             number_of_pins         npins    Yh     numbers of pins in
             output_res_char        orc      Yi     horizontal resolu-
                                                    tion in units per
             output_res_horz_inch   orhi     Yk     horizontal resolu-
                                                    tion in units per
             output_res_line        orl      Yj     vertical resolution
                                                    in units per line
             output_res_vert_inch   orvi     Yl     vertical resolution
                                                    in units per inch
             print_rate             cps      Ym     print rate in char-
                                                    acters per second
             wide_char_size         widcs    Yn     character step size
                                                    when in double wide

       These are the string capabilities:

                  Variable            Cap-     TCap       Description
                   String             name     Code
          acs_chars                   acsc     ac     graphics charset
                                                      pairs, based on
          back_tab                    cbt      bt     back tab (P)
          bell                        bel      bl     audible signal
                                                      (bell) (P)
          carriage_return             cr       cr     carriage return (P*)
          change_char_pitch           cpi      ZA     Change number of
                                                      characters per inch
                                                      to #1
          change_line_pitch           lpi      ZB     Change number of
                                                      lines per inch to #1
          change_res_horz             chr      ZC     Change horizontal
                                                      resolution to #1
          change_res_vert             cvr      ZD     Change vertical res-
                                                      olution to #1
          change_scroll_region        csr      cs     change region to
                                                      line #1 to line #2
          char_padding                rmp      rP     like ip but when in
                                                      insert mode
          clear_all_tabs              tbc      ct     clear all tab stops

          clear_margins               mgc      MC     clear right and left
                                                      soft margins
          clear_screen                clear    cl     clear screen and
                                                      home cursor (P*)
          clr_bol                     el1      cb     Clear to beginning
                                                      of line
          clr_eol                     el       ce     clear to end of line
          clr_eos                     ed       cd     clear to end of
                                                      screen (P*)
          column_address              hpa      ch     horizontal position
                                                      #1, absolute (P)
          command_character           cmdch    CC     terminal settable
                                                      cmd character in
                                                      prototype !?
          create_window               cwin     CW     define a window #1
                                                      from #2,#3 to #4,#5
          cursor_address              cup      cm     move to row #1 col-
                                                      umns #2
          cursor_down                 cud1     do     down one line
          cursor_home                 home     ho     home cursor (if no
          cursor_invisible            civis    vi     make cursor invisi-
          cursor_left                 cub1     le     move left one space
          cursor_mem_address          mrcup    CM     memory relative cur-
                                                      sor addressing, move
                                                      to row #1 columns #2
          cursor_normal               cnorm    ve     make cursor appear
                                                      normal (undo
          cursor_right                cuf1     nd     non-destructive
                                                      space (move right
                                                      one space)
          cursor_to_ll                ll       ll     last line, first
                                                      column (if no cup)
          cursor_up                   cuu1     up     up one line
          cursor_visible              cvvis    vs     make cursor very
          define_char                 defc     ZE     Define a character
                                                      #1, #2 dots wide,
                                                      descender #3
          delete_character            dch1     dc     delete character
          delete_line                 dl1      dl     delete line (P*)
          dial_phone                  dial     DI     dial number #1
          dis_status_line             dsl      ds     disable status line
          display_clock               dclk     DK     display clock
          down_half_line              hd       hd     half a line down
          ena_acs                     enacs    eA     enable alternate
                                                      char set
          enter_alt_charset_mode      smacs    as     start alternate
                                                      character set (P)
          enter_am_mode               smam     SA     turn on automatic
          enter_blink_mode            blink    mb     turn on blinking
          enter_bold_mode             bold     md     turn on bold (extra
                                                      bright) mode
          enter_ca_mode               smcup    ti     string to start pro-
                                                      grams using cup
          enter_delete_mode           smdc     dm     enter delete mode
          enter_dim_mode              dim      mh     turn on half-bright
          enter_doublewide_mode       swidm    ZF     Enter double-wide

          enter_draft_quality         sdrfq    ZG     Enter draft-quality
          enter_insert_mode           smir     im     enter insert mode
          enter_italics_mode          sitm     ZH     Enter italic mode
          enter_leftward_mode         slm      ZI     Start leftward car-
                                                      riage motion
          enter_micro_mode            smicm    ZJ     Start micro-motion
          enter_near_letter_quality   snlq     ZK     Enter NLQ mode
          enter_normal_quality        snrmq    ZL     Enter normal-quality
          enter_protected_mode        prot     mp     turn on protected
          enter_reverse_mode          rev      mr     turn on reverse
                                                      video mode
          enter_secure_mode           invis    mk     turn on blank mode
                                                      (characters invisi-
          enter_shadow_mode           sshm     ZM     Enter shadow-print
          enter_standout_mode         smso     so     begin standout mode
          enter_subscript_mode        ssubm    ZN     Enter subscript mode
          enter_superscript_mode      ssupm    ZO     Enter superscript
          enter_underline_mode        smul     us     begin underline mode
          enter_upward_mode           sum      ZP     Start upward car-
                                                      riage motion
          enter_xon_mode              smxon    SX     turn on xon/xoff
          erase_chars                 ech      ec     erase #1 characters
          exit_alt_charset_mode       rmacs    ae     end alternate char-
                                                      acter set (P)
          exit_am_mode                rmam     RA     turn off automatic
          exit_attribute_mode         sgr0     me     turn off all
          exit_ca_mode                rmcup    te     strings to end pro-
                                                      grams using cup
          exit_delete_mode            rmdc     ed     end delete mode
          exit_doublewide_mode        rwidm    ZQ     End double-wide mode
          exit_insert_mode            rmir     ei     exit insert mode
          exit_italics_mode           ritm     ZR     End italic mode
          exit_leftward_mode          rlm      ZS     End left-motion mode
          exit_micro_mode             rmicm    ZT     End micro-motion
          exit_shadow_mode            rshm     ZU     End shadow-print
          exit_standout_mode          rmso     se     exit standout mode
          exit_subscript_mode         rsubm    ZV     End subscript mode
          exit_superscript_mode       rsupm    ZW     End superscript mode
          exit_underline_mode         rmul     ue     exit underline mode
          exit_upward_mode            rum      ZX     End reverse charac-
                                                      ter motion
          exit_xon_mode               rmxon    RX     turn off xon/xoff
          fixed_pause                 pause    PA     pause for 2-3 sec-
          flash_hook                  hook     fh     flash switch hook
          flash_screen                flash    vb     visible bell (may
                                                      not move cursor)
          form_feed                   ff       ff     hardcopy terminal
                                                      page eject (P*)
          from_status_line            fsl      fs     return from status
          goto_window                 wingo    WG     go to window #1

          hangup                      hup      HU     hang-up phone
          init_1string                is1      i1     initialization
          init_2string                is2      is     initialization
          init_3string                is3      i3     initialization
          init_file                   if       if     name of initializa-
                                                      tion file
          init_prog                   iprog    iP     path name of program
                                                      for initialization
          initialize_color            initc    Ic     initialize color #1
                                                      to (#2,#3,#4)
          initialize_pair             initp    Ip     Initialize color
                                                      pair #1 to
          insert_character            ich1     ic     insert character (P)
          insert_line                 il1      al     insert line (P*)
          insert_padding              ip       ip     insert padding after
                                                      inserted character
          key_a1                      ka1      K1     upper left of keypad
          key_a3                      ka3      K3     upper right of key-
          key_b2                      kb2      K2     center of keypad
          key_backspace               kbs      kb     backspace key
          key_beg                     kbeg     @1     begin key
          key_btab                    kcbt     kB     back-tab key
          key_c1                      kc1      K4     lower left of keypad
          key_c3                      kc3      K5     lower right of key-
          key_cancel                  kcan     @2     cancel key
          key_catab                   ktbc     ka     clear-all-tabs key
          key_clear                   kclr     kC     clear-screen or
                                                      erase key
          key_close                   kclo     @3     close key
          key_command                 kcmd     @4     command key
          key_copy                    kcpy     @5     copy key
          key_create                  kcrt     @6     create key
          key_ctab                    kctab    kt     clear-tab key
          key_dc                      kdch1    kD     delete-character key
          key_dl                      kdl1     kL     delete-line key
          key_down                    kcud1    kd     down-arrow key
          key_eic                     krmir    kM     sent by rmir or smir
                                                      in insert mode
          key_end                     kend     @7     end key
          key_enter                   kent     @8     enter/send key
          key_eol                     kel      kE     clear-to-end-of-line
          key_eos                     ked      kS     clear-to-end-of-
                                                      screen key
          key_exit                    kext     @9     exit key
          key_f0                      kf0      k0     F0 function key
          key_f1                      kf1      k1     F1 function key
          key_f10                     kf10     k;     F10 function key
          key_f11                     kf11     F1     F11 function key
          key_f12                     kf12     F2     F12 function key
          key_f13                     kf13     F3     F13 function key
          key_f14                     kf14     F4     F14 function key
          key_f15                     kf15     F5     F15 function key
          key_f16                     kf16     F6     F16 function key
          key_f17                     kf17     F7     F17 function key
          key_f18                     kf18     F8     F18 function key
          key_f19                     kf19     F9     F19 function key
          key_f2                      kf2      k2     F2 function key
          key_f20                     kf20     FA     F20 function key

          key_f21                     kf21     FB     F21 function key
          key_f22                     kf22     FC     F22 function key
          key_f23                     kf23     FD     F23 function key
          key_f24                     kf24     FE     F24 function key
          key_f25                     kf25     FF     F25 function key
          key_f26                     kf26     FG     F26 function key
          key_f27                     kf27     FH     F27 function key
          key_f28                     kf28     FI     F28 function key
          key_f29                     kf29     FJ     F29 function key
          key_f3                      kf3      k3     F3 function key
          key_f30                     kf30     FK     F30 function key
          key_f31                     kf31     FL     F31 function key
          key_f32                     kf32     FM     F32 function key
          key_f33                     kf33     FN     F33 function key
          key_f34                     kf34     FO     F34 function key
          key_f35                     kf35     FP     F35 function key
          key_f36                     kf36     FQ     F36 function key
          key_f37                     kf37     FR     F37 function key
          key_f38                     kf38     FS     F38 function key
          key_f39                     kf39     FT     F39 function key
          key_f4                      kf4      k4     F4 function key
          key_f40                     kf40     FU     F40 function key
          key_f41                     kf41     FV     F41 function key
          key_f42                     kf42     FW     F42 function key
          key_f43                     kf43     FX     F43 function key
          key_f44                     kf44     FY     F44 function key
          key_f45                     kf45     FZ     F45 function key
          key_f46                     kf46     Fa     F46 function key
          key_f47                     kf47     Fb     F47 function key
          key_f48                     kf48     Fc     F48 function key
          key_f49                     kf49     Fd     F49 function key
          key_f5                      kf5      k5     F5 function key
          key_f50                     kf50     Fe     F50 function key
          key_f51                     kf51     Ff     F51 function key
          key_f52                     kf52     Fg     F52 function key
          key_f53                     kf53     Fh     F53 function key
          key_f54                     kf54     Fi     F54 function key
          key_f55                     kf55     Fj     F55 function key
          key_f56                     kf56     Fk     F56 function key
          key_f57                     kf57     Fl     F57 function key
          key_f58                     kf58     Fm     F58 function key
          key_f59                     kf59     Fn     F59 function key
          key_f6                      kf6      k6     F6 function key
          key_f60                     kf60     Fo     F60 function key
          key_f61                     kf61     Fp     F61 function key
          key_f62                     kf62     Fq     F62 function key
          key_f63                     kf63     Fr     F63 function key
          key_f7                      kf7      k7     F7 function key
          key_f8                      kf8      k8     F8 function key
          key_f9                      kf9      k9     F9 function key
          key_find                    kfnd     @0     find key
          key_help                    khlp     %1     help key
          key_home                    khome    kh     home key
          key_ic                      kich1    kI     insert-character key
          key_il                      kil1     kA     insert-line key
          key_left                    kcub1    kl     left-arrow key
          key_ll                      kll      kH     lower-left key (home
          key_mark                    kmrk     %2     mark key
          key_message                 kmsg     %3     message key
          key_move                    kmov     %4     move key
          key_next                    knxt     %5     next key
          key_npage                   knp      kN     next-page key
          key_open                    kopn     %6     open key
          key_options                 kopt     %7     options key
          key_ppage                   kpp      kP     previous-page key

          key_previous                kprv     %8     previous key
          key_print                   kprt     %9     print key
          key_redo                    krdo     %0     redo key
          key_reference               kref     &1     reference key
          key_refresh                 krfr     &2     refresh key
          key_replace                 krpl     &3     replace key
          key_restart                 krst     &4     restart key
          key_resume                  kres     &5     resume key
          key_right                   kcuf1    kr     right-arrow key
          key_save                    ksav     &6     save key
          key_sbeg                    kBEG     &9     shifted begin key
          key_scancel                 kCAN     &0     shifted cancel key
          key_scommand                kCMD     *1     shifted command key
          key_scopy                   kCPY     *2     shifted copy key
          key_screate                 kCRT     *3     shifted create key
          key_sdc                     kDC      *4     shifted delete-char-
                                                      acter key
          key_sdl                     kDL      *5     shifted delete-line
          key_select                  kslt     *6     select key
          key_send                    kEND     *7     shifted end key
          key_seol                    kEOL     *8     shifted clear-to-
                                                      end-of-line key
          key_sexit                   kEXT     *9     shifted exit key
          key_sf                      kind     kF     scroll-forward key
          key_sfind                   kFND     *0     shifted find key
          key_shelp                   kHLP     #1     shifted help key
          key_shome                   kHOM     #2     shifted home key
          key_sic                     kIC      #3     shifted insert-char-
                                                      acter key
          key_sleft                   kLFT     #4     shifted left-arrow
          key_smessage                kMSG     %a     shifted message key
          key_smove                   kMOV     %b     shifted move key
          key_snext                   kNXT     %c     shifted next key
          key_soptions                kOPT     %d     shifted options key
          key_sprevious               kPRV     %e     shifted previous key
          key_sprint                  kPRT     %f     shifted print key
          key_sr                      kri      kR     scroll-backward key
          key_sredo                   kRDO     %g     shifted redo key
          key_sreplace                kRPL     %h     shifted replace key
          key_sright                  kRIT     %i     shifted right-arrow
          key_srsume                  kRES     %j     shifted resume key
          key_ssave                   kSAV     !1     shifted save key
          key_ssuspend                kSPD     !2     shifted suspend key
          key_stab                    khts     kT     set-tab key
          key_sundo                   kUND     !3     shifted undo key
          key_suspend                 kspd     &7     suspend key
          key_undo                    kund     &8     undo key
          key_up                      kcuu1    ku     up-arrow key
          keypad_local                rmkx     ke     leave 'key-
                                                      board_transmit' mode
          keypad_xmit                 smkx     ks     enter 'key-
                                                      board_transmit' mode
          lab_f0                      lf0      l0     label on function
                                                      key f0 if not f0
          lab_f1                      lf1      l1     label on function
                                                      key f1 if not f1
          lab_f10                     lf10     la     label on function
                                                      key f10 if not f10
          lab_f2                      lf2      l2     label on function
                                                      key f2 if not f2
          lab_f3                      lf3      l3     label on function
                                                      key f3 if not f3

          lab_f4                      lf4      l4     label on function
                                                      key f4 if not f4
          lab_f5                      lf5      l5     label on function
                                                      key f5 if not f5
          lab_f6                      lf6      l6     label on function
                                                      key f6 if not f6
          lab_f7                      lf7      l7     label on function
                                                      key f7 if not f7
          lab_f8                      lf8      l8     label on function
                                                      key f8 if not f8
          lab_f9                      lf9      l9     label on function
                                                      key f9 if not f9
          label_format                fln      Lf     label format
          label_off                   rmln     LF     turn off soft labels
          label_on                    smln     LO     turn on soft labels
          meta_off                    rmm      mo     turn off meta mode
          meta_on                     smm      mm     turn on meta mode
                                                      (8th-bit on)
          micro_column_address        mhpa     ZY     Like column_address
                                                      in micro mode
          micro_down                  mcud1    ZZ     Like cursor_down in
                                                      micro mode
          micro_left                  mcub1    Za     Like cursor_left in
                                                      micro mode
          micro_right                 mcuf1    Zb     Like cursor_right in
                                                      micro mode
          micro_row_address           mvpa     Zc     Like row_address #1
                                                      in micro mode
          micro_up                    mcuu1    Zd     Like cursor_up in
                                                      micro mode
          newline                     nel      nw     newline (behave like
                                                      cr followed by lf)
          order_of_pins               porder   Ze     Match software bits
                                                      to print-head pins
          orig_colors                 oc       oc     Set all color pairs
                                                      to the original ones
          orig_pair                   op       op     Set default pair to
                                                      its original value
          pad_char                    pad      pc     padding char
                                                      (instead of null)
          parm_dch                    dch      DC     delete #1 characters
          parm_delete_line            dl       DL     delete #1 lines (P*)
          parm_down_cursor            cud      DO     down #1 lines (P*)
          parm_down_micro             mcud     Zf     Like parm_down_cur-
                                                      sor in micro mode
          parm_ich                    ich      IC     insert #1 characters
          parm_index                  indn     SF     scroll forward #1
                                                      lines (P)
          parm_insert_line            il       AL     insert #1 lines (P*)
          parm_left_cursor            cub      LE     move #1 characters
                                                      to the left (P)
          parm_left_micro             mcub     Zg     Like parm_left_cur-
                                                      sor in micro mode
          parm_right_cursor           cuf      RI     move #1 characters
                                                      to the right (P*)
          parm_right_micro            mcuf     Zh     Like parm_right_cur-
                                                      sor in micro mode
          parm_rindex                 rin      SR     scroll back #1 lines
          parm_up_cursor              cuu      UP     up #1 lines (P*)
          parm_up_micro               mcuu     Zi     Like parm_up_cursor
                                                      in micro mode
          pkey_key                    pfkey    pk     program function key
                                                      #1 to type string #2

          pkey_local                  pfloc    pl     program function key
                                                      #1 to execute string
          pkey_xmit                   pfx      px     program function key
                                                      #1 to transmit
                                                      string #2
          plab_norm                   pln      pn     program label #1 to
                                                      show string #2
          print_screen                mc0      ps     print contents of
          prtr_non                    mc5p     pO     turn on printer for
                                                      #1 bytes
          prtr_off                    mc4      pf     turn off printer
          prtr_on                     mc5      po     turn on printer
          pulse                       pulse    PU     select pulse dialing
          quick_dial                  qdial    QD     dial number #1 with-
                                                      out checking
          remove_clock                rmclk    RC     remove clock
          repeat_char                 rep      rp     repeat char #1 #2
                                                      times (P*)
          req_for_input               rfi      RF     send next input char
                                                      (for ptys)
          reset_1string               rs1      r1     reset string
          reset_2string               rs2      r2     reset string
          reset_3string               rs3      r3     reset string
          reset_file                  rf       rf     name of reset file
          restore_cursor              rc       rc     restore cursor to
                                                      position of last
          row_address                 vpa      cv     vertical position #1
                                                      absolute (P)
          save_cursor                 sc       sc     save current cursor
                                                      position (P)
          scroll_forward              ind      sf     scroll text up (P)
          scroll_reverse              ri       sr     scroll text down (P)
          select_char_set             scs      Zj     Select character
                                                      set, #1
          set_attributes              sgr      sa     define video
                                                      attributes #1-#9
          set_background              setb     Sb     Set background color
          set_bottom_margin           smgb     Zk     Set bottom margin at
                                                      current line
          set_bottom_margin_parm      smgbp    Zl     Set bottom margin at
                                                      line #1 or (if smgtp
                                                      is not given) #2
                                                      lines from bottom
          set_clock                   sclk     SC     set clock, #1 hrs #2
                                                      mins #3 secs
          set_color_pair              scp      sp     Set current color
                                                      pair to #1
          set_foreground              setf     Sf     Set foreground color
          set_left_margin             smgl     ML     set left soft margin
                                                      at current column.
                                                      (ML is not in BSD
          set_left_margin_parm        smglp    Zm     Set left (right)
                                                      margin at column #1
          set_right_margin            smgr     MR     set right soft mar-
                                                      gin at current col-
          set_right_margin_parm       smgrp    Zn     Set right margin at
                                                      column #1

          set_tab                     hts      st     set a tab in every
                                                      row, current columns
          set_top_margin              smgt     Zo     Set top margin at
                                                      current line
          set_top_margin_parm         smgtp    Zp     Set top (bottom)
                                                      margin at row #1
          set_window                  wind     wi     current window is
                                                      lines #1-#2 cols
          start_bit_image             sbim     Zq     Start printing bit
                                                      image graphics
          start_char_set_def          scsd     Zr     Start character set
                                                      definition #1, with
                                                      #2 characters in the
          stop_bit_image              rbim     Zs     Stop printing bit
                                                      image graphics
          stop_char_set_def           rcsd     Zt     End definition of
                                                      character set #1
          subscript_characters        subcs    Zu     List of subscript-
                                                      able characters
          superscript_characters      supcs    Zv     List of superscript-
                                                      able characters
          tab                         ht       ta     tab to next 8-space
                                                      hardware tab stop
          these_cause_cr              docr     Zw     Printing any of
                                                      these characters
                                                      causes CR
          to_status_line              tsl      ts     move to status line,
                                                      column #1
          tone                        tone     TO     select touch tone
          underline_char              uc       uc     underline char and
                                                      move past it
          up_half_line                hu       hu     half a line up
          user0                       u0       u0     User string #0
          user1                       u1       u1     User string #1
          user2                       u2       u2     User string #2
          user3                       u3       u3     User string #3
          user4                       u4       u4     User string #4
          user5                       u5       u5     User string #5
          user6                       u6       u6     User string #6
          user7                       u7       u7     User string #7
          user8                       u8       u8     User string #8
          user9                       u9       u9     User string #9
          wait_tone                   wait     WA     wait for dial-tone
          xoff_character              xoffc    XF     XOFF character
          xon_character               xonc     XN     XON character
          zero_motion                 zerom    Zx     No motion for subse-
                                                      quent character

       The following string capabilities are present in the SVr4.0 term struc-
       ture, but were originally not documented in the man page.

                  Variable            Cap-       TCap      Description
                   String             name       Code
          alt_scancode_esc            scesa      S8     Alternate escape
                                                        for scancode emu-
          bit_image_carriage_return   bicr       Yv     Move to beginning
                                                        of same row
          bit_image_newline           binel      Zz     Move to next row
                                                        of the bit image
          bit_image_repeat            birep      Xy     Repeat bit image
                                                        cell #1 #2 times

          char_set_names              csnm       Zy     Produce #1'th item
                                                        from list of char-
                                                        acter set names
          code_set_init               csin       ci     Init sequence for
                                                        multiple codesets
          color_names                 colornm    Yw     Give name for
                                                        color #1
          define_bit_image_region     defbi      Yx     Define rectangular
                                                        bit image region
          device_type                 devt       dv     Indicate lan-
                                                        guage/codeset sup-
          display_pc_char             dispc      S1     Display PC charac-
                                                        ter #1
          end_bit_image_region        endbi      Yy     End a bit-image
          enter_pc_charset_mode       smpch      S2     Enter PC character
                                                        display mode
          enter_scancode_mode         smsc       S4     Enter PC scancode
          exit_pc_charset_mode        rmpch      S3     Exit PC character
                                                        display mode
          exit_scancode_mode          rmsc       S5     Exit PC scancode
          get_mouse                   getm       Gm     Curses should get
                                                        button events,
                                                        parameter #1 not
          key_mouse                   kmous      Km     Mouse event has
          mouse_info                  minfo      Mi     Mouse status
          pc_term_options             pctrm      S6     PC terminal
          pkey_plab                   pfxl       xl     Program function
                                                        key #1 to type
                                                        string #2 and show
                                                        string #3
          req_mouse_pos               reqmp      RQ     Request mouse
          scancode_escape             scesc      S7     Escape for scan-
                                                        code emulation
          set0_des_seq                s0ds       s0     Shift to codeset 0
                                                        (EUC set 0, ASCII)
          set1_des_seq                s1ds       s1     Shift to codeset 1
          set2_des_seq                s2ds       s2     Shift to codeset 2
          set3_des_seq                s3ds       s3     Shift to codeset 3
          set_a_background            setab      AB     Set background
                                                        color to #1, using
                                                        ANSI escape
          set_a_foreground            setaf      AF     Set foreground
                                                        color to #1, using
                                                        ANSI escape
          set_color_band              setcolor   Yz     Change to ribbon
                                                        color #1
          set_lr_margin               smglr      ML     Set both left and
                                                        right margins to
                                                        #1, #2.  (ML is
                                                        not in BSD term-
          set_page_length             slines     YZ     Set page length to
                                                        #1 lines
          set_tb_margin               smgtb      MT     Sets both top and
                                                        bottom margins to
                                                        #1, #2

        The  XSI Curses standard added these hardcopy capabilities.  They were
        used in some post-4.1 versions of System V curses, e.g.,  Solaris  2.5
        and  IRIX  6.x.  Except for YI, the ncurses termcap names for them are
        invented.  According to the XSI Curses standard, they have no  termcap
        names.   If  your compiled terminfo entries use these, they may not be
        binary-compatible with System V terminfo entries after SVr4.1; beware!

                   Variable           Cap-      TCap       Description
                    String            name      Code
           enter_horizontal_hl_mode   ehhlm     Xh     Enter horizontal
                                                       highlight mode
           enter_left_hl_mode         elhlm     Xl     Enter left highlight
           enter_low_hl_mode          elohlm    Xo     Enter low highlight
           enter_right_hl_mode        erhlm     Xr     Enter right high-
                                                       light mode
           enter_top_hl_mode          ethlm     Xt     Enter top highlight
           enter_vertical_hl_mode     evhlm     Xv     Enter vertical high-
                                                       light mode
           set_a_attributes           sgr1      sA     Define second set of
                                                       video attributes
           set_pglen_inch             slength   YI     Set page length to
                                                       #1 hundredth of an
                                                       inch (some implemen-
                                                       tations use sL for

   User-Defined Capabilities
       The  preceding  section  listed the predefined capabilities.  They deal
       with some special features for terminals no longer (or possibly  never)
       produced.   Occasionally  there are special features of newer terminals
       which are awkward or impossible to represent by reusing the  predefined

       ncurses  addresses  this  limitation by allowing user-defined capabili-
       ties.  The tic and infocmp programs provide the -x option for this pur-
       pose.  When -x is set, tic treats unknown capabilities as user-defined.
       That is, if tic encounters a capability name which it does  not  recog-
       nize,  it  infers  its type (boolean, number or string) from the syntax
       and  makes  an  extended  table  entry  for   that   capability.    The
       use_extended_names(3X)  function  makes  this information conditionally
       available to applications.  The ncurses library provides the data leav-
       ing most of the behavior to applications:

       o   User-defined  capability  strings  whose  name  begins with "k" are
           treated as function keys.

       o   The types (boolean,  number,  string)  determined  by  tic  can  be
           inferred by successful calls on tigetflag, etc.

       o   If the capability name happens to be two characters, the capability
           is also available through the termcap interface.

       While termcap is said to be extensible because it does not use a prede-
       fined set of capabilities, in practice it has been limited to the capa-
       bilities defined by terminfo implementations.  As a rule,  user-defined
       capabilities intended for use by termcap applications should be limited
       to booleans and numbers to avoid  running  past  the  1023  byte  limit
       assumed by termcap implementations and their applications.  In particu-
       lar, providing extended sets of function keys  (past  the  60  numbered
       keys  and  the  handful  of  special named keys) is best done using the
       longer names available using terminfo.

   A Sample Entry
       The following entry, describing an ANSI-standard terminal, is represen-
       tative  of  what a terminfo entry for a modern terminal typically looks

       ansi|ansi/pc-term compatible with color,
               am, mc5i, mir, msgr,
               colors#8, cols#80, it#8, lines#24, ncv#3, pairs#64,
               bel=^G, blink=\E[5m, bold=\E[1m, cbt=\E[Z, clear=\E[H\E[J,
               cr=^M, cub=\E[%p1%dD, cub1=\E[D, cud=\E[%p1%dB, cud1=\E[B,
               cuf=\E[%p1%dC, cuf1=\E[C, cup=\E[%i%p1%d;%p2%dH,
               cuu=\E[%p1%dA, cuu1=\E[A, dch=\E[%p1%dP, dch1=\E[P,
               dl=\E[%p1%dM, dl1=\E[M, ech=\E[%p1%dX, ed=\E[J, el=\E[K,
               el1=\E[1K, home=\E[H, hpa=\E[%i%p1%dG, ht=\E[I, hts=\EH,
               ich=\E[%p1%d@, il=\E[%p1%dL, il1=\E[L, ind=^J,
               indn=\E[%p1%dS, invis=\E[8m, kbs=^H, kcbt=\E[Z, kcub1=\E[D,
               kcud1=\E[B, kcuf1=\E[C, kcuu1=\E[A, khome=\E[H, kich1=\E[L,
               mc4=\E[4i, mc5=\E[5i, nel=\r\E[S, op=\E[39;49m,
               rep=%p1%c\E[%p2%{1}%-%db, rev=\E[7m, rin=\E[%p1%dT,
               rmacs=\E[10m, rmpch=\E[10m, rmso=\E[m, rmul=\E[m,
               s0ds=\E(B, s1ds=\E)B, s2ds=\E*B, s3ds=\E+B,
               setab=\E[4%p1%dm, setaf=\E[3%p1%dm,
               sgr0=\E[0;10m, smacs=\E[11m, smpch=\E[11m, smso=\E[7m,
               smul=\E[4m, tbc=\E[3g, u6=\E[%i%d;%dR, u7=\E[6n,
               u8=\E[?%[;0123456789]c, u9=\E[c, vpa=\E[%i%p1%dd,

       Entries may continue onto multiple lines by placing white space at  the
       beginning  of  each line except the first.  Comments may be included on
       lines beginning with "#".  Capabilities in terminfo are of three types:

       o   Boolean capabilities which indicate that the terminal has some par-
           ticular feature,

       o   numeric capabilities giving the size of the terminal or the size of
           particular delays, and

       o   string  capabilities,  which  give  a sequence which can be used to
           perform particular terminal operations.

   Types of Capabilities
       All capabilities have names.  For instance, the fact that ANSI-standard
       terminals  have  automatic margins (i.e., an automatic return and line-
       feed when the end of a line is reached) is indicated by the  capability
       am.   Hence  the description of ansi includes am.  Numeric capabilities
       are followed by the character "#" and  then  a  positive  value.   Thus
       cols, which indicates the number of columns the terminal has, gives the
       value "80" for ansi.  Values for numeric capabilities may be  specified
       in decimal, octal or hexadecimal, using the C programming language con-
       ventions (e.g., 255, 0377 and 0xff or 0xFF).

       Finally, string valued capabilities, such as el (clear to end  of  line
       sequence)  are  given  by  the  two-character  code, an "=", and then a
       string ending at the next following ",".

       A number of escape sequences are provided in the string valued capabil-
       ities for easy encoding of characters there:

       o   Both \E and \e map to an ESCAPE character,

       o   ^x maps to a control-x for any appropriate x, and

       o   the sequences

             \n, \l, \r, \t, \b, \f, and \s


             newline, line-feed, return, tab, backspace, form-feed, and space,


       X/Open Curses does not say what "appropriate x" might be.  In practice,
       that  is a printable ASCII graphic character.  The special case "^?" is
       interpreted as DEL (127).  In all other cases, the character  value  is
       AND'd  with 0x1f, mapping to ASCII control codes in the range 0 through

       Other escapes include

       o   \^ for ^,

       o   \\ for \,

       o   \, for comma,

       o   \: for :,

       o   and \0 for null.

           \0 will produce \200, which does not terminate a string but behaves
           as  a null character on most terminals, providing CS7 is specified.
           See stty(1).

           The reason for this quirk is to maintain  binary  compatibility  of
           the  compiled  terminfo files with other implementations, e.g., the
           SVr4 systems, which document this.   Compiled  terminfo  files  use
           null-terminated  strings,  with  no  lengths.  Modifying this would
           require a new binary format, which would not work with other imple-

       Finally, characters may be given as three octal digits after a \.

       A  delay  in  milliseconds  may appear anywhere in a string capability,
       enclosed in $<..> brackets, as in el=\EK$<5>,  and  padding  characters
       are supplied by tputs(3X) to provide this delay.

       o   The delay must be a number with at most one decimal place of preci-
           sion; it may be followed by suffixes "*" or "/" or both.

       o   A "*" indicates that the padding required is  proportional  to  the
           number  of lines affected by the operation, and the amount given is
           the per-affected-unit padding required.  (In  the  case  of  insert
           character, the factor is still the number of lines affected.)

           Normally, padding is advisory if the device has the xon capability;
           it is used for cost computation but does not trigger delays.

       o   A "/" suffix indicates that the padding is mandatory and  forces  a
           delay of the given number of milliseconds even on devices for which
           xon is present to indicate flow control.

       Sometimes individual capabilities must be commented out.  To  do  this,
       put  a  period before the capability name.  For example, see the second
       ind in the example above.

   Fetching Compiled Descriptions
       The ncurses library  searches  for  terminal  descriptions  in  several
       places.   It  uses only the first description found.  The library has a
       compiled-in list of places to search which can be overridden  by  envi-
       ronment  variables.   Before  starting  to  search,  ncurses eliminates
       duplicates in its search list.

       o   If the environment variable TERMINFO is set, it is  interpreted  as
           the pathname of a directory containing the compiled description you
           are working on.  Only that directory is searched.

       o   If TERMINFO is not set, ncurses will instead look in the  directory
           $HOME/.terminfo for a compiled description.

       o   Next,  if  the  environment  variable TERMINFO_DIRS is set, ncurses
           will interpret the contents of that variable as a  list  of  colon-
           separated directories (or database files) to be searched.

           An  empty directory name (i.e., if the variable begins or ends with
           a colon, or contains adjacent colons) is interpreted as the  system
           location /opt/local/share/terminfo.

       o   Finally, ncurses searches these compiled-in locations:

           o   a list of directories (no default value), and

           o   the  system  terminfo directory, /opt/local/share/terminfo (the
               compiled-in default).

   Preparing Descriptions
       We now outline how to prepare  descriptions  of  terminals.   The  most
       effective  way  to  prepare  a terminal description is by imitating the
       description of a similar  terminal  in  terminfo  and  to  build  up  a
       description gradually, using partial descriptions with vi or some other
       screen-oriented program to check that they are correct.  Be aware  that
       a  very  unusual terminal may expose deficiencies in the ability of the
       terminfo file to describe it or bugs in the screen-handling code of the
       test program.

       To  get the padding for insert line right (if the terminal manufacturer
       did not document it) a severe test is to edit  a  large  file  at  9600
       baud, delete 16 or so lines from the middle of the screen, then hit the
       "u" key several times quickly.  If the terminal messes up, more padding
       is usually needed.  A similar test can be used for insert character.

   Basic Capabilities
       The  number  of  columns  on each line for the terminal is given by the
       cols numeric capability.  If the terminal is a CRT, then the number  of
       lines  on the screen is given by the lines capability.  If the terminal
       wraps around to the beginning of the next  line  when  it  reaches  the
       right  margin,  then it should have the am capability.  If the terminal
       can clear its screen, leaving the cursor in  the  home  position,  then
       this  is  given  by the clear string capability.  If the terminal over-
       strikes (rather than clearing a position when  a  character  is  struck
       over)  then  it  should  have  the os capability.  If the terminal is a
       printing terminal, with no soft copy unit, give it both hc and os.  (os
       applies  to  storage scope terminals, such as TEKTRONIX 4010 series, as
       well as hard copy and APL terminals.)  If there is a code to  move  the
       cursor to the left edge of the current row, give this as cr.  (Normally
       this will be carriage return, control/M.)  If there is a code  to  pro-
       duce an audible signal (bell, beep, etc) give this as bel.

       If there is a code to move the cursor one position to the left (such as
       backspace) that capability should be given as cub1.   Similarly,  codes
       to  move  to the right, up, and down should be given as cuf1, cuu1, and
       cud1.  These local cursor motions should not alter the text  they  pass
       over,  for  example,  you  would  not normally use "cuf1= " because the
       space would erase the character moved over.

       A very important point here is that the local cursor motions encoded in
       terminfo  are  undefined  at  the left and top edges of a CRT terminal.
       Programs should never attempt to backspace around the left edge, unless
       bw  is given, and never attempt to go up locally off the top.  In order
       to scroll text up, a program will go to the bottom left corner  of  the
       screen and send the ind (index) string.

       To  scroll  text  down,  a  program  goes to the top left corner of the
       screen and sends the ri (reverse index) string.  The strings ind and ri
       are undefined when not on their respective corners of the screen.

       Parameterized  versions  of  the  scrolling  sequences are indn and rin
       which have the same semantics as ind and ri except that they  take  one
       parameter,  and scroll that many lines.  They are also undefined except
       at the appropriate edge of the screen.

       The am capability tells whether the cursor sticks at the right edge  of
       the  screen when text is output, but this does not necessarily apply to
       a cuf1 from the last column.  The only local motion  which  is  defined
       from  the  left  edge is if bw is given, then a cub1 from the left edge
       will move to the right edge of the previous row.  If bw is  not  given,
       the  effect  is undefined.  This is useful for drawing a box around the
       edge of the screen, for example.  If the terminal has switch selectable
       automatic  margins,  the terminfo file usually assumes that this is on;
       i.e., am.  If the terminal has a command which moves to the first  col-
       umn  of  the next line, that command can be given as nel (newline).  It
       does not matter if the command clears  the  remainder  of  the  current
       line,  so  if the terminal has no cr and lf it may still be possible to
       craft a working nel out of one or both of them.

       These capabilities suffice to describe hard-copy and "glass-tty" termi-
       nals.  Thus the model 33 teletype is described as

       33|tty33|tty|model 33 teletype,
               bel=^G, cols#72, cr=^M, cud1=^J, hc, ind=^J, os,

       while the Lear Siegler ADM-3 is described as

       adm3|3|lsi adm3,
               am, bel=^G, clear=^Z, cols#80, cr=^M, cub1=^H, cud1=^J,
               ind=^J, lines#24,

   Parameterized Strings
       Cursor  addressing and other strings requiring parameters in the termi-
       nal are described by a parameterized string  capability,  with  printf-
       like escapes such as %x in it.  For example, to address the cursor, the
       cup capability is given, using two parameters: the row  and  column  to
       address  to.  (Rows and columns are numbered from zero and refer to the
       physical screen visible to the user, not to any unseen memory.)  If the
       terminal  has  memory relative cursor addressing, that can be indicated
       by mrcup.

       The parameter mechanism uses a stack and special % codes to  manipulate
       it.   Typically  a  sequence  will  push one of the parameters onto the
       stack and then print it in some format.  Print (e.g., "%d") is  a  spe-
       cial case.  Other operations, including "%t" pop their operand from the
       stack.  It is noted that more complex operations are  often  necessary,
       e.g., in the sgr string.

       The % encodings have the following meanings:

       %%   outputs "%"

            as  in  printf(3),  flags are [-+#] and space.  Use a ":" to allow
            the next character to be a "-" flag, avoiding interpreting "%-" as
            an operator.

       %c   print pop() like %c in printf

       %s   print pop() like %s in printf

            push i'th parameter

            set dynamic variable [a-z] to pop()

            get dynamic variable [a-z] and push it

            set static variable [a-z] to pop()

            get static variable [a-z] and push it

            The  terms  "static"  and "dynamic" are misleading.  Historically,
            these are simply two different sets of variables, whose values are
            not  reset  between calls to tparm(3X).  However, that fact is not
            documented in other implementations.  Relying on it will adversely
            impact portability to other implementations:

            o   SVr2  curses  supported dynamic variables.  Those are set only
                by a %P operator.  A %g for a  given  variable  without  first
                setting  it  with  %P will give unpredictable results, because
                dynamic variables are an  uninitialized  local  array  on  the
                stack in the tparm function.

            o   SVr3.2  curses supported static variables.  Those are an array
                in the TERMINAL structure (declared in term.h), and are zeroed
                automatically  when the setupterm function allocates the data.

            o   SVr4 curses made no further improvements to the dynamic/static
                variable feature.

            o   Solaris  XPG4  curses does not distinguish between dynamic and
                static variables.  They are the same.  Like SVr4 curses,  XPG4
                curses does not initialize these explicitly.

            o   Before  version  6.3,  ncurses  stores both dynamic and static
                variables in persistent storage, initialized to zeros.

            o   Beginning with version 6.3, ncurses stores static and  dynamic
                variables  in the same manner as SVr4.  Unlike other implemen-
                tations, ncurses zeros dynamic variables before the  first  %g
                or %P operator.

       %'c' char constant c

            integer constant nn

       %l   push strlen(pop)

       %+, %-, %*, %/, %m
            arithmetic (%m is mod): push(pop() op pop())

       %&, %|, %^
            bit operations (AND, OR and exclusive-OR): push(pop() op pop())

       %=, %>, %<
            logical operations: push(pop() op pop())

       %A, %O
            logical AND and OR operations (for conditionals)

       %!, %~
            unary operations (logical and bit complement): push(op pop())

       %i   add 1 to first two parameters (for ANSI terminals)

       %? expr %t thenpart %e elsepart %;
            This forms an if-then-else.  The %e elsepart is optional.  Usually
            the %? expr part pushes a value onto the stack,  and  %t  pops  it
            from  the  stack,  testing if it is nonzero (true).  If it is zero
            (false), control passes to the %e (else) part.

            It is possible to form else-if's a la Algol 68:
            %? c1 %t b1 %e c2 %t b2 %e c3 %t b3 %e c4 %t b4 %e %;

            where ci are conditions, bi are bodies.

            Use the -f option of tic or infocmp to see the  structure  of  if-
            then-else's.  Some strings, e.g., sgr can be very complicated when
            written on one line.  The -f option splits the string  into  lines
            with the parts indented.

       Binary  operations  are  in postfix form with the operands in the usual
       order.  That is, to get x-5 one would use "%gx%{5}%-".  %P and %g vari-
       ables are persistent across escape-string evaluations.

       Consider  the HP2645, which, to get to row 3 and column 12, needs to be
       sent \E&a12c03Y padded for 6 milliseconds.  Note that the order of  the
       rows  and  columns  is  inverted  here, and that the row and column are
       printed   as   two   digits.     Thus    its    cup    capability    is

       The  Microterm ACT-IV needs the current row and column sent preceded by
       a  ^T,  with  the  row   and   column   simply   encoded   in   binary,
       "cup=^T%p1%c%p2%c".   Terminals  which  use  "%c"  need  to  be able to
       backspace the cursor (cub1), and to move the cursor up one line on  the
       screen  (cuu1).   This  is  necessary  because it is not always safe to
       transmit \n ^D and \r, as the system may change or discard them.   (The
       library  routines  dealing with terminfo set tty modes so that tabs are
       never expanded, so \t is safe to send.  This turns out to be  essential
       for the Ann Arbor 4080.)

       A  final example is the LSI ADM-3a, which uses row and column offset by
       a blank character, thus "cup=\E=%p1%' '%+%c%p2%' '%+%c".  After sending
       "\E=",  this  pushes  the first parameter, pushes the ASCII value for a
       space (32), adds them (pushing the sum on the stack in place of the two
       previous  values) and outputs that value as a character.  Then the same
       is done for the second parameter.  More complex arithmetic is  possible
       using the stack.

   Cursor Motions
       If  the  terminal has a fast way to home the cursor (to very upper left
       corner of screen) then this can be given as home; similarly a fast  way
       of  getting  to the lower left-hand corner can be given as ll; this may
       involve going up with cuu1 from the home position, but a program should
       never do this itself (unless ll does) because it can make no assumption
       about the effect of moving up from the home position.   Note  that  the
       home  position is the same as addressing to (0,0): to the top left cor-
       ner of the screen, not of memory.  (Thus, the \EH sequence on HP termi-
       nals cannot be used for home.)

       If the terminal has row or column absolute cursor addressing, these can
       be given as single  parameter  capabilities  hpa  (horizontal  position
       absolute)  and  vpa  (vertical position absolute).  Sometimes these are
       shorter than the more general  two  parameter  sequence  (as  with  the
       hp2645)  and can be used in preference to cup.  If there are parameter-
       ized local motions (e.g., move n spaces to  the  right)  these  can  be
       given  as cud, cub, cuf, and cuu with a single parameter indicating how
       many spaces to move.  These are primarily useful if the  terminal  does
       not have cup, such as the TEKTRONIX 4025.

       If  the  terminal  needs to be in a special mode when running a program
       that uses these capabilities, the codes to enter and exit this mode can
       be  given as smcup and rmcup.  This arises, for example, from terminals
       like the Concept with more than one page of memory.   If  the  terminal
       has only memory relative cursor addressing and not screen relative cur-
       sor addressing, a one screen-sized window must be fixed into the termi-
       nal  for cursor addressing to work properly.  This is also used for the
       TEKTRONIX 4025, where smcup sets the command character to  be  the  one
       used  by  terminfo.   If the smcup sequence will not restore the screen
       after an rmcup sequence is output (to the  state  prior  to  outputting
       rmcup), specify nrrmc.

       SVr4  (and  X/Open Curses) list several string capabilities for setting
       margins.  Two were intended for use with  terminals,  and  another  six
       were intended for use with printers.

       o   The two terminal capabilities assume that the terminal may have the
           capability of setting the left and/or right margin at  the  current
           cursor column position.

       o   The printer capabilities assume that the printer may have two types
           of capability:

           o   the ability to set a top and/or bottom margin using the current
               line position, and

           o   parameterized  capabilities  for setting the top, bottom, left,
               right margins given the number of rows or columns.

       In practice, the categorization into "terminal" and  "printer"  is  not

       o   The  AT&T  SVr4  terminal  database  uses smgl four times, for AT&T

           Three of the four are printers.   They  lack  the  ability  to  set
           left/right margins by specifying the column.

       o   Other  (non-AT&T) terminals may support margins but using different
           assumptions from AT&T.

           For instance, the DEC VT420 supports left/right margins,  but  only
           using a column parameter.  As an added complication, the VT420 uses
           two settings to fully enable left/right margins (left/right  margin
           mode,  and  origin  mode).   The  former enables the margins, which
           causes printed text to wrap  within  margins,  but  the  latter  is
           needed to prevent cursor-addressing outside those margins.

       o   Both  DEC  VT420  left/right  margins are set with a single control
           sequence.  If either is omitted, the corresponding margin is set to
           the left or right edge of the display (rather than leaving the mar-
           gin unmodified).

       These are the margin-related capabilities:

                 Name    Description
                 smgl    Set left margin at current column
                 smgr    Set right margin at current column
                 smgb    Set bottom margin at current line
                 smgt    Set top margin at current line
                 smgbp   Set bottom margin at line N
                 smglp   Set left margin at column N
                 smgrp   Set right margin at column N
                 smgtp   Set top margin at line N
                 smglr   Set both left and right margins to L and R
                 smgtb   Set both top and bottom margins to T and B

       When writing an application that uses these  string  capabilities,  the
       pairs  should be first checked to see if each capability in the pair is
       set or only one is set:

       o   If both smglp and smgrp are set, each is used with a  single  argu-
           ment, N, that gives the column number of the left and right margin,

       o   If both smgtp and smgbp are set, each is used to set  the  top  and
           bottom margin, respectively:

           o   smgtp is used with a single argument, N, the line number of the
               top margin.

           o   smgbp is used with two arguments, N and M, that give  the  line
               number of the bottom margin, the first counting from the top of
               the page and the second counting from the bottom.  This  accom-
               modates  the two styles of specifying the bottom margin in dif-
               ferent manufacturers' printers.

           When designing a terminfo entry for a printer that has  a  settable
           bottom  margin,  only  the first or second argument should be used,
           depending on the printer.  When developing an application that uses
           smgbp to set the bottom margin, both arguments must be given.

       Conversely, when only one capability in the pair is set:

       o   If  only  one  of  smglp and smgrp is set, then it is used with two
           arguments, the column number of the left and right margins, in that

       o   Likewise,  if  only  one of smgtp and smgbp is set, then it is used
           with two arguments that give the top and bottom  margins,  in  that
           order, counting from the top of the page.

           When designing a terminfo entry for a printer that requires setting
           both left and right or top and bottom margins simultaneously,  only
           one  capability  in  the  pairs  smglp and smgrp or smgtp and smgbp
           should be defined, leaving the other unset.

       Except for very old terminal descriptions, e.g.,  those  developed  for
       SVr4,  the  scheme  just  described  should be considered obsolete.  An
       improved set of capabilities was added late in the SVr4 releases (smglr
       and  smgtb),  which  explicitly  use  two  parameters  for  setting the
       left/right or top/bottom margins.

       When setting margins, the line- and column-values are zero-based.

       The mgc string capability should  be  defined.   Applications  such  as
       tabs(1) rely upon this to reset all margins.

   Area Clears
       If  the  terminal can clear from the current position to the end of the
       line, leaving the cursor where it is, this should be given as  el.   If
       the  terminal  can  clear from the beginning of the line to the current
       position inclusive, leaving the cursor where  it  is,  this  should  be
       given  as  el1.  If the terminal can clear from the current position to
       the end of the display, then this should be given as ed.   Ed  is  only
       defined from the first column of a line.  (Thus, it can be simulated by
       a request to delete a large number of lines, if a true ed is not avail-

   Insert/delete line and vertical motions
       If  the  terminal  can  open a new blank line before the line where the
       cursor is, this should be given as il1; this  is  done  only  from  the
       first  position  of  a  line.  The cursor must then appear on the newly
       blank line.  If the terminal can delete the line which  the  cursor  is
       on,  then this should be given as dl1; this is done only from the first
       position on the line to be deleted.  Versions of il1 and dl1 which take
       a single parameter and insert or delete that many lines can be given as
       il and dl.

       If the terminal has a settable scrolling region (like  the  vt100)  the
       command  to  set  this  can be described with the csr capability, which
       takes two parameters: the top and bottom lines of the scrolling region.
       The cursor position is, alas, undefined after using this command.

       It  is possible to get the effect of insert or delete line using csr on
       a properly chosen region; the sc and rc (save and restore cursor)  com-
       mands  may  be  useful for ensuring that your synthesized insert/delete
       string does not move the cursor.  (Note that  the  ncurses(3X)  library
       does   this   synthesis   automatically,   so   you  need  not  compose
       insert/delete strings for an entry with csr).

       Yet another way to construct insert and delete might be to use a combi-
       nation  of  index  with the memory-lock feature found on some terminals
       (like the HP-700/90 series, which however also has insert/delete).

       Inserting lines at the top or bottom of the screen  can  also  be  done
       using  ri  or  ind on many terminals without a true insert/delete line,
       and is often faster even on terminals with those features.

       The boolean non_dest_scroll_region should be set if each scrolling win-
       dow  is  effectively a view port on a screen-sized canvas.  To test for
       this capability, create a scrolling region in the middle of the screen,
       write  something  to the bottom line, move the cursor to the top of the
       region, and do ri followed by dl1 or ind.  If the data scrolled off the
       bottom  of  the  region  by  the  ri re-appears, then scrolling is non-
       destructive.  System V and XSI Curses expect that ind,  ri,  indn,  and
       rin  will  simulate destructive scrolling; their documentation cautions
       you not to define csr unless this is true.  This curses  implementation
       is more liberal and will do explicit erases after scrolling if ndsrc is

       If the terminal has the ability to define a window as part  of  memory,
       which  all  commands  affect,  it  should be given as the parameterized
       string wind.  The four parameters are the starting and ending lines  in
       memory and the starting and ending columns in memory, in that order.

       If the terminal can retain display memory above, then the da capability
       should be given; if display memory  can  be  retained  below,  then  db
       should  be given.  These indicate that deleting a line or scrolling may
       bring non-blank lines up from below or that scrolling back with ri  may
       bring down non-blank lines.

   Insert/Delete Character
       There  are  two  basic  kinds  of intelligent terminals with respect to
       insert/delete character which can be  described  using  terminfo.   The
       most  common insert/delete character operations affect only the charac-
       ters on the current line and shift characters off the end of  the  line
       rigidly.  Other terminals, such as the Concept 100 and the Perkin Elmer
       Owl, make a distinction between typed and untyped blanks on the screen,
       shifting  upon  an  insert  or  delete  only to an untyped blank on the
       screen which is either eliminated, or expanded to two untyped blanks.

       You can determine the kind of terminal you have by clearing the  screen
       and  then  typing  text separated by cursor motions.  Type "abc    def"
       using local cursor motions (not  spaces)  between  the  "abc"  and  the
       "def".   Then position the cursor before the "abc" and put the terminal
       in insert mode.  If typing characters causes the rest of  the  line  to
       shift  rigidly  and  characters to fall off the end, then your terminal
       does not distinguish between blanks  and  untyped  positions.   If  the
       "abc"  shifts over to the "def" which then move together around the end
       of the current line and onto the next as you insert, you have the  sec-
       ond  type  of terminal, and should give the capability in, which stands
       for "insert null".

       While these are two logically  separate  attributes  (one  line  versus
       multi-line  insert  mode,  and  special treatment of untyped spaces) we
       have seen no terminals whose insert mode cannot be described  with  the
       single attribute.

       Terminfo  can  describe  both  terminals which have an insert mode, and
       terminals which send a simple sequence to open a blank position on  the
       current line.  Give as smir the sequence to get into insert mode.  Give
       as rmir the sequence to leave  insert  mode.   Now  give  as  ich1  any
       sequence  needed  to  be  sent  just before sending the character to be
       inserted.  Most terminals with a true insert mode will not  give  ich1;
       terminals  which  send a sequence to open a screen position should give
       it here.

       If your terminal has both, insert mode is usually preferable  to  ich1.
       Technically,  you  should  not  give  both unless the terminal actually
       requires both to be used in combination.  Accordingly, some  non-curses
       applications  get  confused if both are present; the symptom is doubled
       characters in an update using insert.  This requirement  is  now  rare;
       most  ich  sequences do not require previous smir, and most smir insert
       modes do not require ich1 before each character.   Therefore,  the  new
       curses  actually  assumes this is the case and uses either rmir/smir or
       ich/ich1 as appropriate (but not both).  If you have to write an  entry
       to  be  used  under  new curses for a terminal old enough to need both,
       include the rmir/smir sequences in ich1.

       If post insert padding is needed, give this as a number of milliseconds
       in  ip (a string option).  Any other sequence which may need to be sent
       after an insert of a single character may also be given in ip.  If your
       terminal  needs  both  to be placed into an "insert mode" and a special
       code to precede each inserted character, then both smir/rmir  and  ich1
       can  be  given,  and  both  will be used.  The ich capability, with one
       parameter, n, will repeat the effects of ich1 n times.

       If padding is necessary between characters typed while  not  in  insert
       mode, give this as a number of milliseconds padding in rmp.

       It  is  occasionally  necessary  to move around while in insert mode to
       delete characters on the same line (e.g., if there is a tab  after  the
       insertion  position).   If  your terminal allows motion while in insert
       mode you can give the capability mir to  speed  up  inserting  in  this
       case.   Omitting  mir  will affect only speed.  Some terminals (notably
       Datamedia's) must not have mir because of the  way  their  insert  mode

       Finally,  you  can  specify dch1 to delete a single character, dch with
       one parameter, n, to delete n characters, and  delete  mode  by  giving
       smdc  and  rmdc  to  enter  and exit delete mode (any mode the terminal
       needs to be placed in for dch1 to work).

       A command to erase n characters  (equivalent  to  outputting  n  blanks
       without moving the cursor) can be given as ech with one parameter.

   Highlighting, Underlining, and Visible Bells
       If your terminal has one or more kinds of display attributes, these can
       be represented in a number of different ways.  You  should  choose  one
       display  form  as  standout  mode,  representing a good, high contrast,
       easy-on-the-eyes, format for  highlighting  error  messages  and  other
       attention  getters.   (If  you  have a choice, reverse video plus half-
       bright is good, or reverse video alone.)  The sequences  to  enter  and
       exit  standout  mode  are given as smso and rmso, respectively.  If the
       code to change into or out of standout mode  leaves  one  or  even  two
       blank  spaces  on  the screen, as the TVI 912 and Teleray 1061 do, then
       xmc should be given to tell how many spaces are left.

       Codes to begin underlining and end underlining can be given as smul and
       rmul respectively.  If the terminal has a code to underline the current
       character and move the cursor one space  to  the  right,  such  as  the
       Microterm Mime, this can be given as uc.

       Other  capabilities  to  enter various highlighting modes include blink
       (blinking) bold (bold or extra bright) dim (dim or  half-bright)  invis
       (blanking  or invisible text) prot (protected) rev (reverse video) sgr0
       (turn off all attribute modes) smacs  (enter  alternate  character  set
       mode) and rmacs (exit alternate character set mode).  Turning on any of
       these modes singly may or may not turn off other modes.

       If there is a sequence to set arbitrary  combinations  of  modes,  this
       should  be  given  as  sgr (set attributes), taking 9 parameters.  Each
       parameter is either 0 or nonzero, as the corresponding attribute is  on
       or  off.  The 9 parameters are, in order: standout, underline, reverse,
       blink, dim, bold, blank, protect, alternate  character  set.   Not  all
       modes need be supported by sgr, only those for which corresponding sep-
       arate attribute commands exist.

       For example, the DEC vt220 supports most of the modes:

                   tparm parameter   attribute    escape sequence

                   none              none         \E[0m
                   p1                standout     \E[0;1;7m
                   p2                underline    \E[0;4m
                   p3                reverse      \E[0;7m
                   p4                blink        \E[0;5m
                   p5                dim          not available
                   p6                bold         \E[0;1m
                   p7                invis        \E[0;8m
                   p8                protect      not used
                   p9                altcharset   ^O (off) ^N (on)

       We begin each escape sequence by turning off any existing modes,  since
       there  is  no quick way to determine whether they are active.  Standout
       is set up to be the combination of reverse and bold.  The vt220  termi-
       nal  has  a protect mode, though it is not commonly used in sgr because
       it protects characters on the screen from  the  host's  erasures.   The
       altcharset  mode  also  is  different  in  that  it is either ^O or ^N,
       depending on whether it is off or on.  If all modes are turned on,  the
       resulting sequence is \E[0;1;4;5;7;8m^N.

       Some  sequences are common to different modes.  For example, ;7 is out-
       put when either p1 or p3 is  true,  that  is,  if  either  standout  or
       reverse modes are turned on.

       Writing out the above sequences, along with their dependencies yields

                 sequence   when to output      terminfo translation

                 \E[0       always              \E[0
                 ;1         if p1 or p6         %?%p1%p6%|%t;1%;
                 ;4         if p2               %?%p2%|%t;4%;
                 ;5         if p4               %?%p4%|%t;5%;
                 ;7         if p1 or p3         %?%p1%p3%|%t;7%;
                 ;8         if p7               %?%p7%|%t;8%;
                 m          always              m
                 ^N or ^O   if p9 ^N, else ^O   %?%p9%t^N%e^O%;

       Putting this all together into the sgr sequence gives:


       Remember  that  if  you specify sgr, you must also specify sgr0.  Also,
       some implementations rely on sgr being given if sgr0 is, Not  all  ter-
       minfo  entries  necessarily have an sgr string, however.  Many terminfo
       entries are derived from termcap entries which have no sgr string.  The
       only drawback to adding an sgr string is that termcap also assumes that
       sgr0 does not exit alternate character set mode.

       Terminals with the "magic cookie" glitch (xmc) deposit  special  "cook-
       ies" when they receive mode-setting sequences, which affect the display
       algorithm rather than having extra bits for each character.  Some  ter-
       minals,  such  as  the  HP 2621, automatically leave standout mode when
       they move to a new line or the cursor  is  addressed.   Programs  using
       standout  mode  should  exit  standout mode before moving the cursor or
       sending a newline, unless the msgr capability,  asserting  that  it  is
       safe to move in standout mode, is present.

       If  the  terminal has a way of flashing the screen to indicate an error
       quietly (a bell replacement) then this can be given as flash;  it  must
       not move the cursor.

       If  the cursor needs to be made more visible than normal when it is not
       on the bottom line (to make, for example, a non-blinking underline into
       an  easier  to  find block or blinking underline) give this sequence as
       cvvis.  If there is a way to make the cursor completely invisible, give
       that  as  civis.  The capability cnorm should be given which undoes the
       effects of both of these modes.

       If your terminal correctly generates  underlined  characters  (with  no
       special  codes  needed)  even  though  it does not overstrike, then you
       should give the capability ul.  If  a  character  overstriking  another
       leaves  both  characters  on the screen, specify the capability os.  If
       overstrikes are erasable with a blank, then this should be indicated by
       giving eo.

   Keypad and Function Keys
       If  the  terminal  has  a keypad that transmits codes when the keys are
       pressed, this information can be given.  Note that it is  not  possible
       to handle terminals where the keypad only works in local (this applies,
       for example, to the unshifted HP 2621 keys).  If the keypad can be  set
       to transmit or not transmit, give these codes as smkx and rmkx.  Other-
       wise the keypad is assumed to always transmit.

       The codes sent by the left arrow, right arrow, up  arrow,  down  arrow,
       and  home  keys  can  be given as kcub1, kcuf1, kcuu1, kcud1, and khome
       respectively.  If there are function keys such as f0, f1, ..., f10, the
       codes  they  send  can  be given as kf0, kf1, ..., kf10.  If these keys
       have labels other than the default f0 through f10, the  labels  can  be
       given as lf0, lf1, ..., lf10.

       The codes transmitted by certain other special keys can be given:

       o   kll (home down),

       o   kbs (backspace),

       o   ktbc (clear all tabs),

       o   kctab (clear the tab stop in this column),

       o   kclr (clear screen or erase key),

       o   kdch1 (delete character),

       o   kdl1 (delete line),

       o   krmir (exit insert mode),

       o   kel (clear to end of line),

       o   ked (clear to end of screen),

       o   kich1 (insert character or enter insert mode),

       o   kil1 (insert line),

       o   knp (next page),

       o   kpp (previous page),

       o   kind (scroll forward/down),

       o   kri (scroll backward/up),

       o   khts (set a tab stop in this column).

       In  addition,  if  the  keypad has a 3 by 3 array of keys including the
       four arrow keys, the other five keys can be given  as  ka1,  ka3,  kb2,
       kc1,  and  kc3.   These  keys  are  useful when the effects of a 3 by 3
       directional pad are needed.

       Strings to program function keys can be given as pfkey, pfloc, and pfx.
       A  string to program screen labels should be specified as pln.  Each of
       these strings takes two parameters: the function key number to  program
       (from 0 to 10) and the string to program it with.  Function key numbers
       out of this range may program undefined keys in  a  terminal  dependent
       manner.   The  difference between the capabilities is that pfkey causes
       pressing the given key to be the same as  the  user  typing  the  given
       string;  pfloc  causes  the  string  to  be executed by the terminal in
       local; and pfx causes the string to be transmitted to the computer.

       The capabilities nlab, lw and lh  define  the  number  of  programmable
       screen  labels  and  their  width and height.  If there are commands to
       turn the labels on and off, give them in smln and rmln.  smln  is  nor-
       mally  output  after  one  or  more pln sequences to make sure that the
       change becomes visible.

   Tabs and Initialization
       A few capabilities are used only for tabs:

       o   If the terminal has hardware tabs, the command to  advance  to  the
           next tab stop can be given as ht (usually control/I).

       o   A "back-tab" command which moves leftward to the preceding tab stop
           can be given as cbt.

           By convention, if the teletype modes indicate that tabs  are  being
           expanded  by  the  computer rather than being sent to the terminal,
           programs should not use ht or cbt even if they are  present,  since
           the user may not have the tab stops properly set.

       o   If  the  terminal has hardware tabs which are initially set every n
           spaces when the terminal is powered up, the numeric parameter it is
           given, showing the number of spaces the tabs are set to.

           The it capability is normally used by the tset command to determine
           whether to set the mode for hardware tab expansion, and whether  to
           set the tab stops.  If the terminal has tab stops that can be saved
           in non-volatile memory, the terminfo description  can  assume  that
           they are properly set.

       Other capabilities include

       o   is1, is2, and is3, initialization strings for the terminal,

       o   iprog,  the path name of a program to be run to initialize the ter-

       o   and if, the name of a file containing long initialization  strings.

       These  strings  are  expected to set the terminal into modes consistent
       with the rest of the terminfo description.  They are normally  sent  to
       the  terminal,  by  the  init option of the tput program, each time the
       user logs in.  They will be printed in the following order:

              run the program

                     is1 and

              set the margins using
                     mgc or
                     smglp and smgrp or
                     smgl and smgr

              set tabs using
                     tbc and hts

              print the file

              and finally output

       Most initialization is done with is2.  Special terminal  modes  can  be
       set  up  without duplicating strings by putting the common sequences in
       is2 and special cases in is1 and is3.

       A set of sequences that does a harder  reset  from  a  totally  unknown
       state can be given as rs1, rs2, rf and rs3, analogous to is1 , is2 , if
       and is3 respectively.  These strings are  output  by  reset  option  of
       tput,  or  by  the reset program (an alias of tset), which is used when
       the terminal gets into a wedged state.  Commands are normally placed in
       rs1, rs2 rs3 and rf only if they produce annoying effects on the screen
       and are not necessary when logging in.  For example, the command to set
       the  vt100  into  80-column  mode would normally be part of is2, but it
       causes an annoying glitch of the screen  and  is  not  normally  needed
       since the terminal is usually already in 80-column mode.

       The  reset  program  writes  strings including iprog, etc., in the same
       order as the init program, using rs1, etc., instead of  is1,  etc.   If
       any  of  rs1, rs2, rs3, or rf reset capability strings are missing, the
       reset program falls back upon the corresponding initialization capabil-
       ity string.

       If  there are commands to set and clear tab stops, they can be given as
       tbc (clear all tab stops) and hts (set a tab stop in the current column
       of  every  row).   If a more complex sequence is needed to set the tabs
       than can be described by this, the sequence can be placed in is2 or if.

       The  tput  reset  command uses the same capability strings as the reset
       command, although the two programs (tput and reset)  provide  different
       command-line options.

       In practice, these terminfo capabilities are not often used in initial-
       ization of tabs (though they are required for the tabs program):

       o   Almost all hardware terminals (at least those which supported tabs)
           initialized those to every eight columns:

           The  only  exception  was  the  AT&T 2300 series, which set tabs to
           every five columns.

       o   In particular, developers of the hardware terminals which are  com-
           monly  used  as models for modern terminal emulators provided docu-
           mentation demonstrating that eight columns were the standard.

       o   Because of this, the terminal initialization programs tput and tset
           use   the  tbc  (clear_all_tabs)  and  hts  (set_tab)  capabilities
           directly only when the it (init_tabs) capability is set to a  value
           other than eight.

   Delays and Padding
       Many  older  and slower terminals do not support either XON/XOFF or DTR
       handshaking, including hard copy terminals and some very  archaic  CRTs
       (including,  for example, DEC VT100s).  These may require padding char-
       acters after certain cursor motions and screen changes.

       If the terminal uses xon/xoff handshaking for flow control (that is, it
       automatically  emits  ^S  back  to  the host when its input buffers are
       close to full), set xon.  This capability suppresses  the  emission  of
       padding.   You can also set it for memory-mapped console devices effec-
       tively that do not have a  speed  limit.   Padding  information  should
       still be included so that routines can make better decisions about rel-
       ative costs, but actual pad characters will not be transmitted.

       If pb (padding baud rate) is given, padding is suppressed at baud rates
       below  the  value  of  pb.  If the entry has no padding baud rate, then
       whether padding is emitted or not is completely controlled by xon.

       If the terminal requires other than a null (zero) character as  a  pad,
       then  this  can  be  given as pad.  Only the first character of the pad
       string is used.

   Status Lines
       Some terminals have an extra "status line" which is not  normally  used
       by  software (and thus not counted in the terminal's lines capability).

       The simplest case is a status line which is cursor-addressable but  not
       part of the main scrolling region on the screen; the Heathkit H19 has a
       status line of this kind, as would  a  24-line  VT100  with  a  23-line
       scrolling region set up on initialization.  This situation is indicated
       by the hs capability.

       Some terminals with status lines need special sequences to  access  the
       status  line.  These may be expressed as a string with single parameter
       tsl which takes the cursor to a given zero-origin column on the  status
       line.   The  capability fsl must return to the main-screen cursor posi-
       tions before the last tsl.  You may need to embed the string values  of
       sc  (save  cursor) and rc (restore cursor) in tsl and fsl to accomplish

       The status line is normally assumed to be the same width as  the  width
       of  the  terminal.   If  this  is  untrue,  you can specify it with the
       numeric capability wsl.

       A command to erase or blank the status line may be specified as dsl.

       The boolean capability eslok specifies  that  escape  sequences,  tabs,
       etc., work ordinarily in the status line.

       The  ncurses implementation does not yet use any of these capabilities.
       They are documented here in case they ever become important.

   Line Graphics
       Many terminals have alternate character sets useful for  forms-drawing.
       Terminfo and curses have built-in support for most of the drawing char-
       acters supported by the VT100,  with  some  characters  from  the  AT&T
       4410v1  added.   This  alternate  character set may be specified by the
       acsc capability.

          Glyph                      ACS            Ascii     acsc   acsc
          Name                       Name           Default   Char   Value
          arrow pointing right       ACS_RARROW     >         +      0x2b
          arrow pointing left        ACS_LARROW     <         ,      0x2c
          arrow pointing up          ACS_UARROW     ^         -      0x2d
          arrow pointing down        ACS_DARROW     v         .      0x2e
          solid square block         ACS_BLOCK      #         0      0x30
          diamond                    ACS_DIAMOND    +         `      0x60
          checker board (stipple)    ACS_CKBOARD    :         a      0x61
          degree symbol              ACS_DEGREE     \         f      0x66
          plus/minus                 ACS_PLMINUS    #         g      0x67
          board of squares           ACS_BOARD      #         h      0x68
          lantern symbol             ACS_LANTERN    #         i      0x69
          lower right corner         ACS_LRCORNER   +         j      0x6a

          upper right corner         ACS_URCORNER   +         k      0x6b
          upper left corner          ACS_ULCORNER   +         l      0x6c
          lower left corner          ACS_LLCORNER   +         m      0x6d
          large plus or crossover    ACS_PLUS       +         n      0x6e
          scan line 1                ACS_S1         ~         o      0x6f
          scan line 3                ACS_S3         -         p      0x70
          horizontal line            ACS_HLINE      -         q      0x71
          scan line 7                ACS_S7         -         r      0x72
          scan line 9                ACS_S9         _         s      0x73
          tee pointing right         ACS_LTEE       +         t      0x74
          tee pointing left          ACS_RTEE       +         u      0x75
          tee pointing up            ACS_BTEE       +         v      0x76
          tee pointing down          ACS_TTEE       +         w      0x77
          vertical line              ACS_VLINE      |         x      0x78
          less-than-or-equal-to      ACS_LEQUAL     <         y      0x79
          greater-than-or-equal-to   ACS_GEQUAL     >         z      0x7a
          greek pi                   ACS_PI         *         {      0x7b
          not-equal                  ACS_NEQUAL     !         |      0x7c
          UK pound sign              ACS_STERLING   f         }      0x7d
          bullet                     ACS_BULLET     o         ~      0x7e

       A few notes apply to the table itself:

       o   X/Open Curses incorrectly states that the mapping  for  lantern  is
           uppercase  "I"  although Unix implementations use the lowercase "i"

       o   The DEC VT100 implemented graphics using  the  alternate  character
           set  feature, temporarily switching modes and sending characters in
           the range 0x60 (96) to 0x7e (126) (the acsc Value column in the ta-

       o   The AT&T terminal added graphics characters outside that range.

           Some  of  the  characters  within the range do not match the VT100;
           presumably they were used in the AT&T terminal:  board  of  squares
           replaces  the  VT100  newline symbol, while lantern symbol replaces
           the VT100 vertical tab symbol.  The other VT100 symbols for control
           characters  (horizontal tab, carriage return and line-feed) are not
           (re)used in curses.

       The best way to define a new device's graphics set is to add  a  column
       to  a  copy of this table for your terminal, giving the character which
       (when emitted between smacs/rmacs switches) will  be  rendered  as  the
       corresponding graphic.  Then read off the VT100/your terminal character
       pairs right to left in sequence; these become the ACSC string.

   Color Handling
       The curses library functions init_pair and  init_color  manipulate  the
       color   pairs   and   color  values  discussed  in  this  section  (see
       curs_color(3X) for details on these and related functions).

       Most color terminals are either "Tektronix-like" or "HP-like":

       o   Tektronix-like terminals have a predefined set of N colors (where N
           is usually 8), and can set character-cell foreground and background
           characters independently, mixing them into N * N color-pairs.

       o   On HP-like terminals, the user must set each color  pair  up  sepa-
           rately  (foreground and background are not independently settable).
           Up to M color-pairs may be set up from 2*M different colors.  ANSI-
           compatible terminals are Tektronix-like.

       Some basic color capabilities are independent of the color method.  The
       numeric capabilities colors and pairs specify the  maximum  numbers  of
       colors  and  color-pairs  that can be displayed simultaneously.  The op
       (original pair) string resets foreground and background colors to their
       default  values  for  the terminal.  The oc string resets all colors or
       color-pairs to their default values for the terminal.   Some  terminals
       (including many PC terminal emulators) erase screen areas with the cur-
       rent background color rather  than  the  power-up  default  background;
       these should have the boolean capability bce.

       While the curses library works with color pairs (reflecting the inabil-
       ity of some devices to set foreground and  background  colors  indepen-
       dently), there are separate capabilities for setting these features:

       o   To  change  the  current  foreground  or background color on a Tek-
           tronix-type terminal, use setaf (set  ANSI  foreground)  and  setab
           (set  ANSI background) or setf (set foreground) and setb (set back-
           ground).  These take one parameter, the  color  number.   The  SVr4
           documentation  describes only setaf/setab; the XPG4 draft says that
           "If the terminal supports ANSI escape sequences to  set  background
           and  foreground,  they  should be coded as setaf and setab, respec-

       o   If the terminal supports other escape sequences to  set  background
           and  foreground,  they  should  be  coded as setf and setb, respec-
           tively.  The vidputs and the refresh(3X) functions  use  the  setaf
           and setab capabilities if they are defined.

       The  setaf/setab and setf/setb capabilities take a single numeric argu-
       ment each.  Argument values 0-7 of setaf/setab are portably defined  as
       follows  (the  middle  column  is the symbolic #define available in the
       header for the curses or ncurses libraries).  The terminal hardware  is
       free to map these as it likes, but the RGB values indicate normal loca-
       tions in color space.

                    Color       #define       Value       RGB
                    black     COLOR_BLACK       0     0, 0, 0
                    red       COLOR_RED         1     max,0,0
                    green     COLOR_GREEN       2     0,max,0
                    yellow    COLOR_YELLOW      3     max,max,0
                    blue      COLOR_BLUE        4     0,0,max
                    magenta   COLOR_MAGENTA     5     max,0,max
                    cyan      COLOR_CYAN        6     0,max,max
                    white     COLOR_WHITE       7     max,max,max

       The argument values of setf/setb historically correspond to a different
       mapping, i.e.,

                    Color       #define       Value       RGB
                    black     COLOR_BLACK       0     0, 0, 0
                    blue      COLOR_BLUE        1     0,0,max
                    green     COLOR_GREEN       2     0,max,0
                    cyan      COLOR_CYAN        3     0,max,max
                    red       COLOR_RED         4     max,0,0
                    magenta   COLOR_MAGENTA     5     max,0,max
                    yellow    COLOR_YELLOW      6     max,max,0
                    white     COLOR_WHITE       7     max,max,max

       It is important to not confuse the two sets of color capabilities; oth-
       erwise red/blue will be interchanged on the display.

       On an HP-like terminal, use scp with a color-pair number  parameter  to
       set which color pair is current.

       Some terminals allow the color values to be modified:

       o   On  a Tektronix-like terminal, the capability ccc may be present to
           indicate that colors can be modified.  If so, the initc  capability
           will take a color number (0 to colors - 1)and three more parameters
           which describe the color.  These three parameters default to  being
           interpreted as RGB (Red, Green, Blue) values.  If the boolean capa-
           bility hls is present, they are instead  as  HLS  (Hue,  Lightness,
           Saturation) indices.  The ranges are terminal-dependent.

       o   On  an HP-like terminal, initp may give a capability for changing a
           color-pair value.  It will take seven parameters; a color-pair num-
           ber  (0  to  max_pairs - 1), and two triples describing first back-
           ground and then foreground colors.  These parameters must be  (Red,
           Green, Blue) or (Hue, Lightness, Saturation) depending on hls.

       On  some color terminals, colors collide with highlights.  You can reg-
       ister these collisions with the ncv capability.  This is a bit-mask  of
       attributes  not to be used when colors are enabled.  The correspondence
       with the attributes understood by curses is as follows:

                        Attribute      Bit   Decimal   Set by
                        A_STANDOUT     0     1         sgr
                        A_UNDERLINE    1     2         sgr
                        A_REVERSE      2     4         sgr
                        A_BLINK        3     8         sgr
                        A_DIM          4     16        sgr
                        A_BOLD         5     32        sgr
                        A_INVIS        6     64        sgr
                        A_PROTECT      7     128       sgr
                        A_ALTCHARSET   8     256       sgr
                        A_HORIZONTAL   9     512       sgr1
                        A_LEFT         10    1024      sgr1
                        A_LOW          11    2048      sgr1
                        A_RIGHT        12    4096      sgr1
                        A_TOP          13    8192      sgr1
                        A_VERTICAL     14    16384     sgr1
                        A_ITALIC       15    32768     sitm

       For example, on many IBM PC consoles, the underline attribute  collides
       with  the  foreground  color  blue  and is not available in color mode.
       These should have an ncv capability of 2.

       SVr4 curses does nothing with ncv, ncurses recognizes it and  optimizes
       the output in favor of colors.

       If  the  terminal requires other than a null (zero) character as a pad,
       then this can be given as pad.  Only the first  character  of  the  pad
       string is used.  If the terminal does not have a pad character, specify
       npc.  Note that ncurses implements the termcap-compatible PC  variable;
       though  the  application  may  set this value to something other than a
       null, ncurses will test npc first and use napms if the terminal has  no
       pad character.

       If  the terminal can move up or down half a line, this can be indicated
       with hu (half-line up) and hd (half-line down).  This is primarily use-
       ful for superscripts and subscripts on hard-copy terminals.  If a hard-
       copy terminal can eject to the next page (form feed), give this  as  ff
       (usually control/L).

       If  there  is  a  command to repeat a given character a given number of
       times (to save time transmitting a large number  of  identical  charac-
       ters)  this  can  be  indicated with the parameterized string rep.  The
       first parameter is the character to be repeated and the second  is  the
       number of times to repeat it.  Thus, tparm(repeat_char, 'x', 10) is the
       same as "xxxxxxxxxx".

       If the terminal has a settable command character, such as the TEKTRONIX
       4025,  this can be indicated with cmdch.  A prototype command character
       is chosen which is used in all capabilities.  This character  is  given
       in  the  cmdch  capability to identify it.  The following convention is
       supported on some UNIX systems: The environment is to be searched for a
       CC  variable,  and if found, all occurrences of the prototype character
       are replaced with the character in the environment variable.

       Terminal descriptions that do not represent a specific  kind  of  known
       terminal,  such  as  switch, dialup, patch, and network, should include
       the gn (generic) capability so that programs can complain that they  do
       not  know how to talk to the terminal.  (This capability does not apply
       to virtual terminal descriptions for which  the  escape  sequences  are

       If the terminal has a "meta key" which acts as a shift key, setting the
       8th bit of any character transmitted, this fact can be  indicated  with
       km.   Otherwise, software will assume that the 8th bit is parity and it
       will usually be cleared.  If strings exist to turn this "meta mode"  on
       and off, they can be given as smm and rmm.

       If the terminal has more lines of memory than will fit on the screen at
       once, the number of lines of memory can be indicated with lm.  A  value
       of lm#0 indicates that the number of lines is not fixed, but that there
       is still more memory than fits on the screen.

       If the terminal is one of those supported by the UNIX virtual  terminal
       protocol, the terminal number can be given as vt.

       Media  copy strings which control an auxiliary printer connected to the
       terminal can be given as mc0: print the contents of  the  screen,  mc4:
       turn  off  the printer, and mc5: turn on the printer.  When the printer
       is on, all text sent to the terminal will be sent to the  printer.   It
       is  undefined whether the text is also displayed on the terminal screen
       when the printer is on.  A variation  mc5p  takes  one  parameter,  and
       leaves the printer on for as many characters as the value of the param-
       eter, then turns the printer off.  The parameter should not exceed 255.
       All  text,  including mc4, is transparently passed to the printer while
       an mc5p is in effect.

   Glitches and Braindamage
       Hazeltine terminals, which do not allow "~" characters to be  displayed
       should indicate hz.

       Terminals  which  ignore a line-feed immediately after an am wrap, such
       as the Concept and vt100, should indicate xenl.

       If el is required to get rid of standout  (instead  of  merely  writing
       normal text on top of it), xhp should be given.

       Teleray terminals, where tabs turn all characters moved over to blanks,
       should indicate xt (destructive tabs).  Note: the  variable  indicating
       this  is  now  "dest_tabs_magic_smso";  in  older versions, it was tel-
       eray_glitch.  This glitch is also taken to mean that it is not possible
       to position the cursor on top of a "magic cookie", that to erase stand-
       out mode it is instead necessary to use delete and  insert  line.   The
       ncurses implementation ignores this glitch.

       The  Beehive Superbee, which is unable to correctly transmit the escape
       or control/C characters, has xsb, indicating that the f1  key  is  used
       for  escape  and  f2  for control/C.  (Only certain Superbees have this
       problem, depending on the ROM.)  Note that in older terminfo  versions,
       this  capability was called "beehive_glitch"; it is now "no_esc_ctl_c".

       Other specific terminal problems may be corrected by adding more  capa-
       bilities of the form xx.

   Pitfalls of Long Entries
       Long  terminfo  entries are unlikely to be a problem; to date, no entry
       has even approached terminfo's 4096-byte string-table maximum.   Unfor-
       tunately,  the  termcap translations are much more strictly limited (to
       1023 bytes), thus termcap translations of  long  terminfo  entries  can
       cause problems.

       The  man  pages  for  4.3BSD and older versions of tgetent instruct the
       user to allocate a 1024-byte buffer for the termcap entry.   The  entry
       gets  null-terminated by the termcap library, so that makes the maximum
       safe length for a termcap entry 1k-1 (1023) bytes.  Depending  on  what
       the  application  and the termcap library being used does, and where in
       the termcap file the terminal type that tgetent is  searching  for  is,
       several bad things can happen.

       Some  termcap libraries print a warning message or exit if they find an
       entry that's longer than 1023 bytes; others do not; others truncate the
       entries  to  1023  bytes.  Some application programs allocate more than
       the recommended 1K for the termcap entry; others do not.

       Each termcap entry has two important sizes associated with  it:  before
       "tc"  expansion, and after "tc" expansion.  "tc" is the capability that
       tacks on another termcap entry to the end of the current one, to add on
       its capabilities.  If a termcap entry does not use the "tc" capability,
       then of course the two lengths are the same.

       The "before tc expansion" length is the most important one, because  it
       affects  more than just users of that particular terminal.  This is the
       length of the entry as it exists in /etc/termcap, minus the  backslash-
       newline pairs, which tgetent strips out while reading it.  Some termcap
       libraries strip off the final newline, too (GNU termcap does not).  Now

       o   a termcap entry before expansion is more than 1023 bytes long,

       o   and the application has only allocated a 1k buffer,

       o   and  the termcap library (like the one in BSD/OS 1.1 and GNU) reads
           the whole entry into the buffer, no matter what its length, to  see
           if it is the entry it wants,

       o   and  tgetent  is  searching  for a terminal type that either is the
           long entry, appears in the termcap file after the  long  entry,  or
           does  not  appear in the file at all (so that tgetent has to search
           the whole termcap file).

       Then tgetent will overwrite memory, perhaps  its  stack,  and  probably
       core  dump the program.  Programs like telnet are particularly vulnera-
       ble; modern telnets pass along values like the terminal type  automati-
       cally.   The  results are almost as undesirable with a termcap library,
       like SunOS 4.1.3 and Ultrix 4.4, that prints warning messages  when  it
       reads  an  overly  long  termcap entry.  If a termcap library truncates
       long entries, like OSF/1 3.0, it is  immune  to  dying  here  but  will
       return incorrect data for the terminal.

       The  "after  tc  expansion"  length  will  have a similar effect to the
       above, but only for people who actually set TERM to that terminal type,
       since  tgetent  only  does "tc" expansion once it is found the terminal
       type it was looking for, not while searching.

       In summary, a termcap entry that is longer than 1023 bytes  can  cause,
       on  various  combinations of termcap libraries and applications, a core
       dump, warnings, or incorrect operation.  If it is too long even  before
       "tc"  expansion,  it will have this effect even for users of some other
       terminal types and users whose TERM variable does not  have  a  termcap

       When  in  -C (translate to termcap) mode, the ncurses implementation of
       tic(1M) issues warning messages when the pre-tc  length  of  a  termcap
       translation  is  too  long.  The -c (check) option also checks resolved
       (after tc expansion) lengths.

   Binary Compatibility
       It is not wise to count  on  portability  of  binary  terminfo  entries
       between  commercial  UNIX  versions.   The problem is that there are at
       least two versions of terminfo (under HP-UX  and  AIX)  which  diverged
       from  System  V terminfo after SVr1, and have added extension capabili-
       ties to the string table that (in the binary format) collide with  Sys-
       tem V and XSI Curses extensions.


       Searching   for  terminal  descriptions  in  $HOME/.terminfo  and  TER-
       MINFO_DIRS is not supported by older implementations.

       Some SVr4 curses implementations, and all  previous  to  SVr4,  do  not
       interpret the %A and %O operators in parameter strings.

       SVr4/XPG4  do  not  specify  whether msgr licenses movement while in an
       alternate-character-set mode (such modes may, among other  things,  map
       CR  and  NL  to  characters  that  do  not trigger local motions).  The
       ncurses implementation ignores msgr in ALTCHARSET  mode.   This  raises
       the  possibility that an XPG4 implementation making the opposite inter-
       pretation may need terminfo entries  made  for  ncurses  to  have  msgr
       turned off.

       The ncurses library handles insert-character and insert-character modes
       in a slightly non-standard way to get better  update  efficiency.   See
       the Insert/Delete Character subsection above.

       The  parameter  substitutions  for  set_clock and display_clock are not
       documented in SVr4 or the XSI Curses standard.  They are  deduced  from
       the documentation for the AT&T 505 terminal.

       Be  careful  assigning the kmous capability.  The ncurses library wants
       to interpret it as KEY_MOUSE, for use by terminals and  emulators  like
       xterm  that can return mouse-tracking information in the keyboard-input

       X/Open Curses does not mention  italics.   Portable  applications  must
       assume  that  numeric  capabilities  are  signed  16-bit  values.  This
       includes the no_color_video (ncv) capability.   The  32768  mask  value
       used  for  italics with ncv can be confused with an absent or cancelled
       ncv.  If italics should work with colors, then the ncv  value  must  be
       specified, even if it is zero.

       Different  commercial  ports  of  terminfo and curses support different
       subsets of the XSI Curses standard and (in some cases) different exten-
       sion sets.  Here is a summary, accurate as of October 1995:

       o   SVR4, Solaris, ncurses -- These support all SVr4 capabilities.

       o   SGI -- Supports the SVr4 set, adds one undocumented extended string
           capability (set_pglen).

       o   SVr1, Ultrix -- These support a restricted subset of terminfo capa-
           bilities.   The  booleans  end  with  xon_xoff;  the  numerics with
           width_status_line; and the strings with prtr_non.

       o   HP/UX -- Supports the  SVr1  subset,  plus  the  SVr[234]  numerics
           num_labels,   label_height,  label_width,  plus  function  keys  11
           through 63, plus plab_norm,  label_on,  and  label_off,  plus  some
           incompatible extensions in the string table.

       o   AIX  -- Supports the SVr1 subset, plus function keys 11 through 63,
           plus a number of incompatible string table extensions.

       o   OSF -- Supports both the SVr4 set and the AIX extensions.


                                files containing terminal descriptions


       infocmp(1M), tabs(1), tic(1M), curses(3X),  curs_color(3X),  curs_vari-
       ables(3), printf(3), term_variables(3X).  term(5).  user_caps(5).


       Zeyd M. Ben-Halim, Eric S. Raymond, Thomas E. Dickey.  Based on pcurses
       by Pavel Curtis.


ncurses 6.3 - Generated Thu Nov 18 18:52:15 CST 2021
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