Import macOS userland

adv_cmds-176
basic_cmds-55
bootstrap_cmds-116.100.1
developer_cmds-66
diskdev_cmds-667.40.1
doc_cmds-53.60.1
file_cmds-321.40.3
mail_cmds-35
misc_cmds-34
network_cmds-606.40.1
patch_cmds-17
remote_cmds-63
shell_cmds-216.60.1
system_cmds-880.60.2
text_cmds-106

1 files changed, 124 insertions, 0 deletions

diff --git a/doc_cmds/colcrt/colcrt.1 b/doc_cmds/colcrt/colcrt.1
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+.\" Copyright (c) 1980, 1990, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 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
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)colcrt.1	8.1 (Berkeley) 6/30/93
+.\" $FreeBSD: src/usr.bin/colcrt/colcrt.1,v 1.13 2004/07/31 06:22:01 tjr Exp $
+.\"
+.Dd July 31, 2004
+.Dt COLCRT 1
+.Os
+.Sh NAME
+.Nm colcrt
+.Nd filter nroff output for CRT previewing
+.Sh SYNOPSIS
+.Nm
+.Op Fl
+.Op Fl \&2
+.Op Ar
+.Sh DESCRIPTION
+The
+.Nm
+utility provides virtual half-line and reverse line feed sequences
+for terminals without such capability, and on which overstriking
+is destructive.
+Half-line characters and underlining (changed to dashing `\-')
+are placed on new lines in between the normal output lines.
+.Pp
+The following options are available:
+.Bl -tag -width indent
+.It Fl
+Suppress all underlining.
+This option is especially useful for previewing
+.Em allboxed
+tables from
+.Xr tbl 1 .
+.It Fl 2
+Cause all half-lines to be printed, effectively double spacing the output.
+Normally, a minimal space output format is used which will suppress empty
+lines.
+The program never suppresses two consecutive empty lines, however.
+The
+.Fl 2
+option is useful for sending output to the line printer when the output
+contains superscripts and subscripts which would otherwise be invisible.
+.El
+.Sh ENVIRONMENT
+The
+.Ev LANG , LC_ALL
+and
+.Ev LC_CTYPE
+environment variables affect the execution of
+.Nm
+as described in
+.Xr environ 7 .
+.Sh EXAMPLES
+A typical use of
+.Nm
+would be
+.Bd -literal
+tbl exum2.n \&| nroff \-ms \&| colcrt \- \&| more
+.Ed
+.Sh DIAGNOSTICS
+.Ex -std
+.Sh SEE ALSO
+.Xr col 1 ,
+.Xr more 1 ,
+.Xr nroff 1 ,
+.Xr troff 1 ,
+.Xr ul 1
+.Sh BUGS
+Should fold underlines onto blanks even with the
+.Sq Fl
+option so that
+a true underline character would show.
+.Pp
+Can't back up more than 102 lines.
+.Pp
+General overstriking is lost;
+as a special case
+.Ql \&|
+overstruck with
+.Ql \-
+or underline becomes
+.Ql \&+ .
+.Pp
+Lines are trimmed to 132 characters.
+.Pp
+Some provision should be made for processing superscripts and subscripts
+in documents which are already double-spaced.
+.Pp
+Characters that take up more than one column position may not be
+underlined correctly.
+.Sh HISTORY
+The
+.Nm
+command appeared in
+.Bx 3.0 .