.\" Copyright (c) 1980 The Regents of the University of California.
.\" Redistribution and use in source and binary forms, with or without
.\" modification, are permitted provided that the following conditions
.\" 1. Redistributions of source code must retain the above copyright
.\" notice, this list of conditions and the following disclaimer.
.\" 2. Redistributions in binary form must reproduce the above copyright
.\" notice, this list of conditions and the following disclaimer in the
.\" documentation and/or other materials provided with the distribution.
.\" 3. All advertising materials mentioning features or use of this software
.\" must display the following acknowledgement:
.\" This product includes software developed by the University of
.\" California, Berkeley and its contributors.
.\" 4. Neither the name of the University nor the names of its contributors
.\" may be used to endorse or promote products derived from this software
.\" without specific prior written permission.
.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
.\" @(#)appen.A 6.3 (Berkeley) 4/17/91
.ie t .oh '\*(Ln Appendix A''PS1:18-%'
.eh 'PS1:18-%''\*(Ln Appendix A'
.el .he ''\fIAppendix A\fR''
.sh 1 "Capabilities from termcap" 1
The description of terminals is a difficult business,
and we only attempt to summarize the capabilities here:
for a full description see
The string valued options are the most complicated,
since they may include padding information,
Intelligent terminals often require padding on intelligent operations
at high (and sometimes even low) speed.
This is specified by a number before the string in the capability,
and has meaning for the capabilities which have a
at the front of their comment.
This normally is a number of milliseconds to pad the operation.
In the current system which has no true programmable delays,
we do this by sending a sequence of pad characters
(normally nulls, but can be changed
In some cases, the pad is better computed as some number of milliseconds
times the number of affected lines
(to the bottom of the screen usually,
except when terminals have insert modes which will shift several lines.)
to say 12 milliseconds per affected whatever
Capabilities where this makes sense say
.sh 2 "Variables Set By setterm()"
variables set by \fIsetterm()\fR
Type Name Pad Description
char * AL P* Add new blank Line
bool AM Automatic Margins
char * BC Back Cursor movement
bool CA Cursor Addressable
char * CD P* Clear to end of Display
char * CE P Clear to End of line
char * CL P* CLear screen
char * CM P Cursor Motion
char * DC P* Delete Character
char * DL P* Delete Line sequence
char * DM Delete Mode (enter)
char * DO DOwn line sequence
char * ED End Delete mode
bool EO can Erase Overstrikes with \' \'
char * EI End Insert mode
bool HZ HaZeltine ~ braindamage
char * IC P Insert Character
bool IN Insert-Null blessing
char * IM enter Insert Mode (IC usually set, too)
char * IP P* Pad after char Inserted using IM+IE
char * LL quick to Last Line, column 0
char * MA ctrl character MAp for cmd mode
bool MI can Move in Insert mode
bool NC No Cr: \er sends \er\en then eats \en
char * ND Non-Destructive space
char * SE Standout End (may leave space)
char * SF P Scroll Forwards
char * SO Stand Out begin (may leave space)
char * SR P Scroll in Reverse
char * TA P TAb (not ^I or with padding)
char * TE Terminal address enable Ending sequence
char * TI Terminal address enable Initialization
char * UC Underline a single Character
char * UE Underline Ending sequence
bool UL UnderLining works even though !OS
char * US Underline Starting sequence
char * VE Visual End sequence
char * VS Visual Start sequence
bool XN a Newline gets eaten after wrap
are reserved for severely nauseous glitches
.sh 2 "Variables Set By gettmode()"
variables set by \fIgettmode()\fR
bool NONL Term can't hack linefeeds doing a CR
bool GT Gtty indicates Tabs
bool UPPERCASE Terminal generates only uppercase letters
projects / unix-history / blob