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+.\" Copyright (c) 1993 Michael Haardt (michael@moria.de),
+.\" Fri Apr 2 11:32:09 MET DST 1993
+.\"
+.\" SPDX-License-Identifier: GPL-2.0-or-later
+.\"
+.\" Modified formatting Sat Jul 24 17:13:38 1993, Rik Faith (faith@cs.unc.edu)
+.\" Modified (extensions and corrections)
+.\" Sun May 1 14:21:25 MET DST 1994 Michael Haardt
+.\" If mistakes in the capabilities are found, please send a bug report to:
+.\" michael@moria.de
+.\" Modified Mon Oct 21 17:47:19 EDT 1996 by Eric S. Raymond (esr@thyrsus.com)
+.TH termcap 5 2024-05-02 "Linux man-pages (unreleased)"
+.SH NAME
+termcap \- terminal capability database
+.SH DESCRIPTION
+The termcap database is an obsolete facility for describing the
+capabilities of character-cell terminals and printers.
+It is retained only for compatibility with old programs;
+new programs should use the
+.BR terminfo (5)
+database and associated libraries.
+.P
+.I /etc/termcap
+is an ASCII file (the database master) that lists the capabilities of
+many different types of terminals.
+Programs can read termcap to find
+the particular escape codes needed to control the visual attributes of
+the terminal actually in use.
+(Other aspects of the terminal are
+handled by
+.BR stty (1).)
+The termcap database is indexed on the
+.B TERM
+environment variable.
+.P
+Termcap entries must be defined on a single logical line, with \[aq]\e\[aq]
+used to suppress the newline.
+Fields are separated by \[aq]:\[aq].
+The first field of each entry starts at the left-hand margin,
+and contains a list of names for the terminal, separated by \[aq]|\[aq].
+.P
+The first subfield may (in BSD termcap entries from 4.3BSD and
+earlier) contain a short name consisting of two characters.
+This short name may consist of capital or small letters.
+In 4.4BSD, termcap entries this field is omitted.
+.P
+The second subfield (first, in the newer 4.4BSD format) contains the
+name used by the environment variable
+.BR TERM .
+It should be spelled in lowercase letters.
+Selectable hardware capabilities should be marked
+by appending a hyphen and a suffix to this name.
+See below for an example.
+Usual suffixes are w (more than 80 characters wide), am
+(automatic margins), nam (no automatic margins), and rv (reverse video
+display).
+The third subfield contains a long and descriptive name for
+this termcap entry.
+.P
+Subsequent fields contain the terminal capabilities; any continued
+capability lines must be indented one tab from the left margin.
+.P
+Although there is no defined order, it is suggested to write first
+boolean, then numeric, and then string capabilities, each sorted
+alphabetically without looking at lower or upper spelling.
+Capabilities of similar functions can be written in one line.
+.P
+Example for:
+.nf
+.P
+Head line: vt|vt101|DEC VT 101 terminal in 80 character mode:\e
+Head line: Vt|vt101-w|DEC VT 101 terminal in (wide) 132 character mode:\e
+Boolean: :bs:\e
+Numeric: :co#80:\e
+String: :sr=\eE[H:\e
+.fi
+.SS Boolean capabilities
+.nf
+5i Printer will not echo on screen
+am Automatic margins which means automatic line wrap
+bs Control-H (8 dec.) performs a backspace
+bw Backspace on left margin wraps to previous line and right margin
+da Display retained above screen
+db Display retained below screen
+eo A space erases all characters at cursor position
+es Escape sequences and special characters work in status line
+gn Generic device
+hc This is a hardcopy terminal
+HC The cursor is hard to see when not on bottom line
+hs Has a status line
+hz Hazeltine bug, the terminal can not print tilde characters
+in Terminal inserts null bytes, not spaces, to fill whitespace
+km Terminal has a meta key
+mi Cursor movement works in insert mode
+ms Cursor movement works in standout/underline mode
+NP No pad character
+NR ti does not reverse te
+nx No padding, must use XON/XOFF
+os Terminal can overstrike
+ul Terminal underlines although it can not overstrike
+xb Beehive glitch, f1 sends ESCAPE, f2 sends \fB\[ha]C\fP
+xn Newline/wraparound glitch
+xo Terminal uses xon/xoff protocol
+xs Text typed over standout text will be displayed in standout
+xt Teleray glitch, destructive tabs and odd standout mode
+.fi
+.SS Numeric capabilities
+.nf
+co Number of columns
+dB Delay in milliseconds for backspace on hardcopy terminals
+dC Delay in milliseconds for carriage return on hardcopy terminals
+dF Delay in milliseconds for form feed on hardcopy terminals
+dN Delay in milliseconds for new line on hardcopy terminals
+dT Delay in milliseconds for tabulator stop on hardcopy terminals
+dV Delay in milliseconds for vertical tabulator stop on
+ hardcopy terminals
+it Difference between tab positions
+lh Height of soft labels
+lm Lines of memory
+lw Width of soft labels
+li Number of lines
+Nl Number of soft labels
+pb Lowest baud rate which needs padding
+sg Standout glitch
+ug Underline glitch
+vt virtual terminal number
+ws Width of status line if different from screen width
+.fi
+.SS String capabilities
+.nf
+!1 shifted save key
+!2 shifted suspend key
+!3 shifted undo key
+#1 shifted help key
+#2 shifted home key
+#3 shifted input key
+#4 shifted cursor left key
+%0 redo key
+%1 help key
+%2 mark key
+%3 message key
+%4 move key
+%5 next-object key
+%6 open key
+%7 options key
+%8 previous-object key
+%9 print key
+%a shifted message key
+%b shifted move key
+%c shifted next key
+%d shifted options key
+%e shifted previous key
+%f shifted print key
+%g shifted redo key
+%h shifted replace key
+%i shifted cursor right key
+%j shifted resume key
+&0 shifted cancel key
+&1 reference key
+&2 refresh key
+&3 replace key
+&4 restart key
+&5 resume key
+&6 save key
+&7 suspend key
+&8 undo key
+&9 shifted begin key
+*0 shifted find key
+*1 shifted command key
+*2 shifted copy key
+*3 shifted create key
+*4 shifted delete character
+*5 shifted delete line
+*6 select key
+*7 shifted end key
+*8 shifted clear line key
+*9 shifted exit key
+@0 find key
+@1 begin key
+@2 cancel key
+@3 close key
+@4 command key
+@5 copy key
+@6 create key
+@7 end key
+@8 enter/send key
+@9 exit key
+al Insert one line
+AL Insert %1 lines
+ac Pairs of block graphic characters to map alternate character set
+ae End alternative character set
+as Start alternative character set for block graphic characters
+bc Backspace, if not \fB\[ha]H\fP
+bl Audio bell
+bt Move to previous tab stop
+cb Clear from beginning of line to cursor
+cc Dummy command character
+cd Clear to end of screen
+ce Clear to end of line
+ch Move cursor horizontally only to column %1
+cl Clear screen and cursor home
+cm Cursor move to row %1 and column %2 (on screen)
+CM Move cursor to row %1 and column %2 (in memory)
+cr Carriage return
+cs Scroll region from line %1 to %2
+ct Clear tabs
+cv Move cursor vertically only to line %1
+dc Delete one character
+DC Delete %1 characters
+dl Delete one line
+DL Delete %1 lines
+dm Begin delete mode
+do Cursor down one line
+DO Cursor down #1 lines
+ds Disable status line
+eA Enable alternate character set
+ec Erase %1 characters starting at cursor
+ed End delete mode
+ei End insert mode
+ff Formfeed character on hardcopy terminals
+fs Return character to its position before going to status line
+F1 The string sent by function key f11
+F2 The string sent by function key f12
+F3 The string sent by function key f13
+\&... \&...
+F9 The string sent by function key f19
+FA The string sent by function key f20
+FB The string sent by function key f21
+\&... \&...
+FZ The string sent by function key f45
+Fa The string sent by function key f46
+Fb The string sent by function key f47
+\&... \&...
+Fr The string sent by function key f63
+hd Move cursor a half line down
+ho Cursor home
+hu Move cursor a half line up
+i1 Initialization string 1 at login
+i3 Initialization string 3 at login
+is Initialization string 2 at login
+ic Insert one character
+IC Insert %1 characters
+if Initialization file
+im Begin insert mode
+ip Insert pad time and needed special characters after insert
+iP Initialization program
+K1 upper left key on keypad
+K2 center key on keypad
+K3 upper right key on keypad
+K4 bottom left key on keypad
+K5 bottom right key on keypad
+k0 Function key 0
+k1 Function key 1
+k2 Function key 2
+k3 Function key 3
+k4 Function key 4
+k5 Function key 5
+k6 Function key 6
+k7 Function key 7
+k8 Function key 8
+k9 Function key 9
+k; Function key 10
+ka Clear all tabs key
+kA Insert line key
+kb Backspace key
+kB Back tab stop
+kC Clear screen key
+kd Cursor down key
+kD Key for delete character under cursor
+ke turn keypad off
+kE Key for clear to end of line
+kF Key for scrolling forward/down
+kh Cursor home key
+kH Cursor hown down key
+kI Insert character/Insert mode key
+kl Cursor left key
+kL Key for delete line
+kM Key for exit insert mode
+kN Key for next page
+kP Key for previous page
+kr Cursor right key
+kR Key for scrolling backward/up
+ks Turn keypad on
+kS Clear to end of screen key
+kt Clear this tab key
+kT Set tab here key
+ku Cursor up key
+l0 Label of zeroth function key, if not f0
+l1 Label of first function key, if not f1
+l2 Label of first function key, if not f2
+\&... \&...
+la Label of tenth function key, if not f10
+le Cursor left one character
+ll Move cursor to lower left corner
+LE Cursor left %1 characters
+LF Turn soft labels off
+LO Turn soft labels on
+mb Start blinking
+MC Clear soft margins
+md Start bold mode
+me End all mode like so, us, mb, md, and mr
+mh Start half bright mode
+mk Dark mode (Characters invisible)
+ML Set left soft margin
+mm Put terminal in meta mode
+mo Put terminal out of meta mode
+mp Turn on protected attribute
+mr Start reverse mode
+MR Set right soft margin
+nd Cursor right one character
+nw Carriage return command
+pc Padding character
+pf Turn printer off
+pk Program key %1 to send string %2 as if typed by user
+pl Program key %1 to execute string %2 in local mode
+pn Program soft label %1 to show string %2
+po Turn the printer on
+pO Turn the printer on for %1 (<256) bytes
+ps Print screen contents on printer
+px Program key %1 to send string %2 to computer
+r1 Reset string 1 to set terminal to sane modes
+r2 Reset string 2 to set terminal to sane modes
+r3 Reset string 3 to set terminal to sane modes
+RA disable automatic margins
+rc Restore saved cursor position
+rf Reset string filename
+RF Request for input from terminal
+RI Cursor right %1 characters
+rp Repeat character %1 for %2 times
+rP Padding after character sent in replace mode
+rs Reset string
+RX Turn off XON/XOFF flow control
+sa Set %1 %2 %3 %4 %5 %6 %7 %8 %9 attributes
+SA enable automatic margins
+sc Save cursor position
+se End standout mode
+sf Normal scroll one line
+SF Normal scroll %1 lines
+so Start standout mode
+sr Reverse scroll
+SR scroll back %1 lines
+st Set tabulator stop in all rows at current column
+SX Turn on XON/XOFF flow control
+ta move to next hardware tab
+tc Read in terminal description from another entry
+te End program that uses cursor motion
+ti Begin program that uses cursor motion
+ts Move cursor to column %1 of status line
+uc Underline character under cursor and move cursor right
+ue End underlining
+up Cursor up one line
+UP Cursor up %1 lines
+us Start underlining
+vb Visible bell
+ve Normal cursor visible
+vi Cursor invisible
+vs Standout cursor
+wi Set window from line %1 to %2 and column %3 to %4
+XF XOFF character if not \fB\[ha]S\fP
+.fi
+.P
+There are several ways of defining the control codes for string capabilities:
+.P
+Every normal character represents itself,
+except \[aq]\[ha]\[aq], \[aq]\e\[aq], and \[aq]%\[aq].
+.P
+A \fB\[ha]x\fP means Control-x.
+Control-A equals 1 decimal.
+.P
+\ex means a special code.
+x can be one of the following characters:
+.RS
+E Escape (27)
+.br
+n Linefeed (10)
+.br
+r Carriage return (13)
+.br
+t Tabulation (9)
+.br
+b Backspace (8)
+.br
+f Form feed (12)
+.br
+0 Null character.
+A \exxx specifies the octal character xxx.
+.RE
+.TP
+i
+Increments parameters by one.
+.TP
+r
+Single parameter capability
+.TP
++
+Add value of next character to this parameter and do binary output
+.TP
+2
+Do ASCII output of this parameter with a field with of 2
+.TP
+d
+Do ASCII output of this parameter with a field with of 3
+.TP
+%
+Print a \[aq]%\[aq]
+.P
+If you use binary output,
+then you should avoid the null character (\[aq]\e0\[aq])
+because it terminates the string.
+You should reset tabulator expansion
+if a tabulator can be the binary output of a parameter.
+.TP
+Warning:
+The above metacharacters for parameters may be wrong: they document Minix
+termcap which may not be compatible with Linux termcap.
+.P
+The block graphic characters can be specified by three string capabilities:
+.TP
+as
+start the alternative charset
+.TP
+ae
+end the alternative charset
+.TP
+ac
+pairs of characters.
+The first character is the name of the block graphic
+symbol and the second characters is its definition.
+.P
+The following names are available:
+.P
+.nf
++ right arrow (>)
+, left arrow (<)
+\&. down arrow (v)
+0 full square (#)
+I lantern (#)
+- upper arrow (\[ha])
+\&' rhombus (+)
+a chess board (:)
+f degree (')
+g plus-minus (#)
+h square (#)
+j right bottom corner (+)
+k right upper corner (+)
+l left upper corner (+)
+m left bottom corner (+)
+n cross (+)
+o upper horizontal line (-)
+q middle horizontal line (-)
+s bottom horizontal line (_)
+t left tee (+)
+u right tee (+)
+v bottom tee (+)
+w normal tee (+)
+x vertical line (|)
+\[ti] paragraph (???)
+.fi
+.P
+The values in parentheses are suggested defaults which are used by the
+.I curses
+library, if the capabilities are missing.
+.SH SEE ALSO
+.BR ncurses (3),
+.BR termcap (3),
+.BR terminfo (5)