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Annotation of src/usr.bin/ul/ul.1, Revision 1.1

1.1     ! deraadt     1: .\"    $NetBSD: ul.1,v 1.3 1994/12/07 00:28:23 jtc Exp $
        !             2: .\"
        !             3: .\" Copyright (c) 1980, 1991, 1993
        !             4: .\"    The Regents of the University of California.  All rights reserved.
        !             5: .\"
        !             6: .\" Redistribution and use in source and binary forms, with or without
        !             7: .\" modification, are permitted provided that the following conditions
        !             8: .\" are met:
        !             9: .\" 1. Redistributions of source code must retain the above copyright
        !            10: .\"    notice, this list of conditions and the following disclaimer.
        !            11: .\" 2. Redistributions in binary form must reproduce the above copyright
        !            12: .\"    notice, this list of conditions and the following disclaimer in the
        !            13: .\"    documentation and/or other materials provided with the distribution.
        !            14: .\" 3. All advertising materials mentioning features or use of this software
        !            15: .\"    must display the following acknowledgement:
        !            16: .\"    This product includes software developed by the University of
        !            17: .\"    California, Berkeley and its contributors.
        !            18: .\" 4. Neither the name of the University nor the names of its contributors
        !            19: .\"    may be used to endorse or promote products derived from this software
        !            20: .\"    without specific prior written permission.
        !            21: .\"
        !            22: .\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
        !            23: .\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
        !            24: .\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
        !            25: .\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
        !            26: .\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
        !            27: .\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
        !            28: .\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
        !            29: .\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
        !            30: .\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
        !            31: .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
        !            32: .\" SUCH DAMAGE.
        !            33: .\"
        !            34: .\"     @(#)ul.1       8.1 (Berkeley) 6/6/93
        !            35: .\"
        !            36: .Dd June 6, 1993
        !            37: .Dt UL 1
        !            38: .Os BSD 4
        !            39: .Sh NAME
        !            40: .Nm ul
        !            41: .Nd do underlining
        !            42: .Sh SYNOPSIS
        !            43: .Nm ul
        !            44: .Op Fl i
        !            45: .Op Fl t Ar terminal
        !            46: .Op Ar name Ar ...
        !            47: .Sh DESCRIPTION
        !            48: .Nm Ul
        !            49: reads the named files (or standard input if none are given)
        !            50: and translates occurrences of underscores to the sequence
        !            51: which indicates underlining for the terminal in use, as specified
        !            52: by the environment variable
        !            53: .Ev TERM .
        !            54: The file
        !            55: .Pa /etc/termcap
        !            56: is read to determine the appropriate sequences for underlining.
        !            57: If the terminal is incapable of underlining, but is capable of
        !            58: a standout mode then that is used instead.
        !            59: If the terminal can overstrike,
        !            60: or handles underlining automatically,
        !            61: .Nm ul
        !            62: degenerates to
        !            63: .Xr cat 1 .
        !            64: If the terminal cannot underline, underlining is ignored.
        !            65: .Pp
        !            66: The following options are available:
        !            67: .Bl -tag -width Ds
        !            68: .It Fl i
        !            69: Underlining is indicated by a separate line containing appropriate
        !            70: dashes `\-'; this is useful when you want to look at the underlining
        !            71: which is present in an
        !            72: .Xr nroff
        !            73: output stream on a crt-terminal.
        !            74: .It Fl t Ar terminal
        !            75: Overrides the terminal type specified in the environment with
        !            76: .Ar terminal .
        !            77: .El
        !            78: .Sh ENVIRONMENT
        !            79: The following environment variable is used:
        !            80: .Bl -tag -width TERM
        !            81: .It Ev TERM
        !            82: The
        !            83: .Ev TERM
        !            84: variable is used to relate a tty device
        !            85: with its device capability description (see
        !            86: .Xr termcap 5 ) .
        !            87: .Ev TERM
        !            88: is set at login time, either by the default terminal type
        !            89: specified in
        !            90: .Pa /etc/ttys
        !            91: or as set during the login process by the user in their
        !            92: .Pa login
        !            93: file (see
        !            94: .Xr setenv 1 ) .
        !            95: .El
        !            96: .Sh SEE ALSO
        !            97: .Xr man 1 ,
        !            98: .Xr nroff 1 ,
        !            99: .Xr colcrt 1
        !           100: .Sh BUGS
        !           101: .Xr Nroff
        !           102: usually outputs a series of backspaces and underlines intermixed
        !           103: with the text to indicate underlining.  No attempt is made to optimize
        !           104: the backward motion.
        !           105: .Sh HISTORY
        !           106: The
        !           107: .Nm
        !           108: command appeared in
        !           109: .Bx 3.0 .