.\" -*- nroff -*-
.\"
.\" Copyright (c) 1990 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. [Deleted.  See
.\"     ftp://ftp.cs.berkeley.edu/pub/4bsd/README.Impt.License.Change]
.\" 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.
.\"
.\"     @(#)doc-old.tmac	5.2 (Berkeley) 3/13/91
.\"     Slightly modified by jjc@jclark.com to work with groff as well.
.\"
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.\" .ds sT \s-2\fR
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.na
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.\"
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.\"		The \{ and \} is necessary as roff doesn't nest if-elses
.\"		properly, especially with .ds.
.\"	TODO: separate Dt into Dt, Ch and Vt for supp docs.
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.\" 	Volume and Section Number or Chapter Number
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.if !"\\$2"" \{\
.	ds cH \\$2
.	if "\\$3"" \{\
.		\" Volume Title if none given
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.			if \\$2>1 .if \\$2<6 .ds vT UNIX Programmer's Manual
.			if "\\$2"8" .ds vT UNIX System Manager's Manual
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.		if "\\$2"unass"  .ds vT DRAFT
.		if "\\$2"draft"  .ds vT DRAFT
.		if "\\$2"paper"  .ds vT Null
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.\}
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.	if "\\$3"PS1"   .ds vT UNIX Programmers's Supplementary Documents
.	if "\\$3"AMD"   .ds vT UNIX Ancestral Manual Documents
.	if "\\$3"SMM"   .ds vT UNIX System Manager's Manual
.	if "\\$3"URM"   .ds vT UNIX Reference Manual
.	if "\\$3"PRM"   .ds vT UNIX Programmers's Manual
.	if "\\$3"IND"   .ds vT UNIX Manual Master Index
.	if "\\$3"CON"   .ds vT UNIX Contributed Software Manual
.	if "\\$3"IMP"	.ds vT UNIX Implementation Notes
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.	if "\\$3"LOCAL" .ds vT UNIX Local Manual
.	if "\\*(vT"Local" .ds vT \\$3
.\}
..
.\"
.\"	.Os Operating System/Standard and Release or Version Number
.\"
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.	ds oS \fIBSD Experimental\fP
.\" .	ds oS (\fIBag o' Bits\fP)
.\}
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.	ds o1 Non-Null
.\}
.if "\\$1"ATT"   \{\
.	ds oS AT&T
.	if "\\$2""    .as oS \0UNIX
.	if "\\$2"7th" .as oS \07th Edition
.	if "\\$2"7"   .as oS \07th Edition
.	if "\\$2"III" .as oS \0System III
.	if "\\$2"3"   .as oS \0System III
.	if "\\$2"V"   .as oS \0System V
.	if "\\$2"V.2" .as oS \0System V Release 2
.	if "\\$2"V.3" .as oS \0System V Release 3
.	if "\\$2"V.4" .as oS \0System V Release 4
.\}
.if "\\$1"BSD" \{\
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.	if "\\$2"4.1"  .ds oS 4.1 Berkeley Distribution
.	if "\\$2"4.2"  .ds oS 4.2 Berkeley Distribution
.	if "\\$2"4.3"  .ds oS 4.3 Berkeley Distribution
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.\}
.if "\\*(oS"Null" .ds oS \\$1
.if "\\*(o1"Non-Null" .as oS \0\\$2
.rm o1
..
.\"
.\" Standards
.\"
.\" .de St
.\" .ds sT Null
.\" .if "\\$1"POSIX" \{\
.\" .	ds sT IEEE Standard POSIX
.\" .	if \\$2 .as sT \0\\$2
.\" .\}
.\" .if "\\$1"ANSI" \{\
.\" .	ds sT ANSI Standard
.\" .	if \\$2 .as sT \0\\$2
.\" .\}
.\" .if "\\$1"ISO" \{\
.\" .	ds sT ISO Standard
.\" .	if \\$2 .as sT \0\\$2
.\" .\}
.\" .if "\\*(sT"Null" .ds sR \\$3
.\" ..
.\"
.\" .de Gp
.\" .ie !"\\$1"" .ds gP \&\\$1 \\$2 \\$3 \\$4 \\$5
.\" .el .ds gP Null
.\" ..
.\"
.\"
.de Dd
.nr aa 0
.ie \\n(.$>0 \{\
.	ie \\n(.$<4 \{\
.		ds dD \\$1 \\$2 \\$3
.	\}
.	el .tm Usage: .Dd Month Day, Year (e.g July 4, 1977).
.\}
.el \{\
.	ds dD Epoch
.\}
..
.\"
.\"	House Keeping Macro - Make sense of dT, cH, vT, sT, gP and dS
.\"	TODO: Try to get else's for efficiency
.\"	TODO: GET RID OF .wh -1.167i (its in v7)
.\"
.\"
.de hK
.nr % 1
.ds hT \\*(dT
.if !"\\*(cH"Null" \{\
.	ie !"\\*(gP"Null" .as hT \|(\|\\*(cH\\*(gP\|)
.	el .as hT \\|(\\|\\*(cH\\|)
.\}
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.if t \{\
.	wh 0 hM
.	wh -1.25i fM
.\}
.if n \{\
.	ie \\n(cR \{\
.		hM
.		wh -0v fM
.	\}
.	el \{\
.		wh 0 hM
.		wh -1.167i fM
.	\}
.\}
.if n \{\
.	if \\n(nl==0:\\n(nl==-1 'bp
.\}
.if t 'bp
.em lM
..
.\"	Header Macro
.\"
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.ev 1
.pL
.if !\\n(cR 'sp \\n(Hmu
.tl @\\*(Hs\\*(hT\fP@\\*(Vs\\*(vT\fP@\\*(Hs\\*(hT\fP@
'sp \\n(Hmu
.ev
..
.\"
.de fM
.ev 1
.pL
.if !\\n(cR \{\
'	sp \\n(Fmu
.	tl @\\*(Hs\\*(oS\fP@\\*(Vs\\*(dD\fP@%@
'	bp
.\}
.if \\n(cR \{\
.\" .	tl @\\*(Hs\\*(oS\fP@\\*(Vs\\*(dD\fP@%@
.\" '	bp
.\}
.ev
..
.de lM
.fl
.if \\n(cR \{\
.       fM
.       pl \\n(nlu
.\}
..
.de Pp
.sp \\n(Ppu
.ne 2
.ns
..
.de Lp
.Pp
..
.de LP
.tm Not a \-mdoc command: .LP
..
.de PP
.tm Not a \-mdoc command: .PP
..
.de pp
.tm Not a \-mdoc command: .pp
..
.de Co
.tm Not a \-mdoc command: .Co
..
.nr z. 1
.nr z, 1
.nr z: 1
.nr z; 1
.nr z) 1
.nr z( 1
.nr z[ 1
.nr z] 1
.\" This is disgusting, troff not parse if stmt properly
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.nr z2 0
.nr z3 0
.nr z4 0
.nr z5 0
.nr z6 0
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.nr z8 0
.nr z9 0
.nr z0 0
.nr z# 0
.\"
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.ie \\n(.$==0 \{\
.       tm Usage: .Ad address [...] \\*(Pu
.\}
.el \{\
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.       nr cF \\n(.f
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.       el .as f1 \&\\*(sV
.       nB \\$1 \\$2 \\$3 \\$4 \\$5 \\$6 \\$7 \\$8 \\$9
.       ft \\n(cF
.\}
..
.\"
.\" Command Line Argument Macro
.\"
.de Ar
.ie \\n(.$==0 \{\
.       ie !"\\*(iM"" .as f1 \&[\|\\*(aRfile\ ...\fP\|]
.       el \&[\|\\*(aRfile\ ...\fP\|]
.\}
.el \{\
.       ds sV \\*(aR
.       nr cF \\n(.f
.       ie "\\*(iM"" .ds f1 \&\\*(sV
.       el .as f1 \&\\*(sV
.       nB \\$1 \\$2 \\$3 \\$4 \\$5 \\$6 \\$7 \\$8 \\$9
.       ft \\n(cF
.\}
..
.\"
.de Em
.ie \\n(.$==0 \{\
.       tm Usage: .Em text ... \\*(Pu
.\}
.el \{\
.       ds sV \\*(eM
.       nr cF \\n(.f
.       ie "\\*(iM"" .ds f1 \&\\*(sV
.       el .as f1 \&\\*(sV
.       nB \\$1 \\$2 \\$3 \\$4 \\$5 \\$6 \\$7 \\$8 \\$9
.       ft \\n(cF
.\}
..
.\"
.de Er
.ie \\n(.$==0 \{\
.       tm Usage: .Er ERRNOTYPE ... \\*(Pu
.       \}
.el \{\
.       ds sV \\*(eR
.       nr cF \\n(.f
.       ie "\\*(iM"" .ds f1 \&\\*(sV
.       el .as f1 \&\\*(sV
.       nB \\$1 \\$2 \\$3 \\$4 \\$5 \\$6 \\$7 \\$8 \\$9
.       ft \\n(cF
.\}
..
.\"
.de Ev
.ie \\n(.$==0 \{\
.	tm Usage: .Ev ENVIRONMENT_VARIABLE(s) ... \\*(Pu
.	\}
.el \{\
.	ds sV \\*(eV
.	nr cF \\n(.f
.       ie "\\*(iM"" .ds f1 \&\\*(sV
.       el .as f1 \&\\*(sV
.       nB \\$1 \\$2 \\$3 \\$4 \\$5 \\$6 \\$7 \\$8 \\$9
.	ft \\n(cF
.\}
..
.\"
.\" Flag Name Macro
.\"
.de Fl
.ie \\n(.$==0 \{\
.       ie !"\\*(iM"" .as f1 \&\\*(fL\-\fP
.       el \&\\*(fL\-\fP
.\}
.el \{\
.       nr rZ 0
.       sW \\$1
.       if (\\n(sW==1&\\n(.$==1) .rZ \\$1
.       ds sV \\*(fL
.       nr cF \\n(.f
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.               ie "\\*(iM"" .ds f1 \&\\*(sV\-\f\\n(cF\\$1
.               el \&\\*(sV\-\f\\n(cF\\$1
.       \}
.	el \{\
.	       ie "\\*(iM"" .ds f1 \&\\*(sV
.	       el .as f1 \&\\*(sV
.	       fB \\$1 \\$2 \\$3 \\$4 \\$5 \\$6 \\$7 \\$8 \\$9
.	       ft \\n(cF
.	\}
.\}
..
.\"	Interactive Commands Macro
.\"
.de Ic
.ie \\n(.$==0 \{\
.	tm Usage: .Ic Interactive Commands(s) ... \\*(Pu
.\}
.el \{\
.       ds sV \\*(iC
.       nr cF \\n(.f
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.       el .as f1 \&\\*(sV
.       nB \\$1 \\$2 \\$3 \\$4 \\$5 \\$6 \\$7 \\$8 \\$9
.       ft \\n(cF
.\}
..
.\"
.\" Interactive Command Modifiers (flags)
.\"
.de Cm
.ie \\n(.$==0 \{\
.	tm Usage: .Cm Interactive Command Modifier(s) ... \\*(Pu
.\}
.el \{\
.       ds sV \\*(cM
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.       el .as f1 \&\\*(sV
.       nB \\$1 \\$2 \\$3 \\$4 \\$5 \\$6 \\$7 \\$8 \\$9
.       ft \\n(cF
.\}
..
.\"
.de Li
.ie \\n(.$==0 \{\
.       tm Usage: .Li literal ... \\*(Pu
.       \}
.el \{\
.       ds sV \\*(lI
.       nr cF \\n(.f
.       ie "\\*(iM"" .ds f1 \&\\*(sV
.       el .as f1 \&\\*(sV
.       nB \\$1 \\$2 \\$3 \\$4 \\$5 \\$6 \\$7 \\$8 \\$9
.       ft \\n(cF
.\}
..
.\" If in nroff or any other case where the default font
.\" is constant width, and literal means zilch, single quote instead.
.ie n \{\
.de Ql
.	ie \\n(.$==0 \{\
.	       tm Usage: .Ql literal ... \\*(Pu
.       \}
.	el \{\
.		Sq \\$1 \\$2 \\$3 \\$4 \\$5 \\$6 \\$7 \\$8 \\$9
.	\}
..
.\}
.el \{\
.de Ql
.	ie \\n(.$==0 \{\
.	       tm Usage: .Ql literal ... \\*(Pu
.       \}
.	el \{\
.		Li \\$1 \\$2 \\$3 \\$4 \\$5 \\$6 \\$7 \\$8 \\$9
.	\}
..
.\}
.\"
.de Nm
.ie \\n(.$==0 \{\
.	if "\\*(n1"" .tm Usage: .Nm Name(s) ... \\*(Pu
.	ie !"\\*(iM"" .as f1 \&\\*(nM\\*(n1\\$1\fP
.	el \&\\*(nM\\*(n1\\$1\fP
.\}
.el \{\
.	ds sV \\*(nM
.	nr cF \\n(.f
.	if \\n(nS \{\
.		rs
.		in -\\n(iSu
.		ie \\n(nS>1 .br
.		el \{\
.			sW \\$1
.			nr iS ((\\n(sW+1)*\\n(fW)u
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.		in +\\n(iSu
.		ti -\\n(iSu
.		nr nS \\n(nS+1
.	\}
.	if "\\*(n1"" .ds n1 \\$1
.	ie "\\*(iM"" .ds f1 \&\\*(sV
.	el .as f1 \&\\*(sV
.	nB \\$1 \\$2 \\$3 \\$4 \\$5 \\$6 \\$7 \\$8 \\$9
.	ft \\n(cF
.\}
..
.\"
.de Pa
.ie \\n(.$==0 \{\
\&\\*(pA~\fP
.\}
.el \{\
.       ds sV \\*(pA
.       nr cF \\n(.f
.       ie "\\*(iM"" .ds f1 \&\\*(sV
.       el .as f1 \&\\*(sV
.       nB \\$1 \\$2 \\$3 \\$4 \\$5 \\$6 \\$7 \\$8 \\$9
.       ft \\n(cF
.\}
..
.\"
.de Sy
.ie \\n(.$==0 \{\
.       tm Usage: .Sy Symbolic Text ... \\*(Pu
.       \}
.el \{\
.       ds sV \\*(sY
.       nr cF \\n(.f
.       ie "\\*(iM"" .ds f1 \&\\*(sV
.       el .as f1 \&\\*(sV
.       nB \\$1 \\$2 \\$3 \\$4 \\$5 \\$6 \\$7 \\$8 \\$9
.       ft \\n(cF
.\}
..
.\"
.de Ms
.ie \\n(.$==0 \{\
.       tm Usage: .Ms Math Symbol ... \\*(Pu
.       \}
.el \{\
.       ds sV \\*(sY
.       nr cF \\n(.f
.       ie "\\*(iM"" .ds f1 \&\\*(sV
.       el .as f1 \&\\*(sV
.       nB \\$1 \\$2 \\$3 \\$4 \\$5 \\$6 \\$7 \\$8 \\$9
.       ft \\n(cF
.\}
..
.\"
.de Va
.ie \\n(.$==0 \{\
.       tm Usage: .Va variable_name(s) ... \\*(Pu
.\}
.el \{\
.       ds sV \\*(vA
.       nr cF \\n(.f
.       ie "\\*(iM"" .ds f1 \&\\*(sV
.       el .as f1 \&\\*(sV
.       nB \\$1 \\$2 \\$3 \\$4 \\$5 \\$6 \\$7 \\$8 \\$9
.       ft \\n(cF
.\}
..
.\"
.de nB
.hy 0
.if \\n(.$==0 .tm Usage error: called with empty arguments (empty quotes)?
.ie \\n(.$>1 \{\
.	rZ \\$1
.	ie \\n(rZ .as f1 \&\f\\n(cF\\$1\fP
.	el .as f1 \&\\$1
.	rZ \\$2
.	if !\\n(rZ \{\
.		ie !"\\*(iM""\{\
.\"			I surrender
.			if "\\*(iM"Tp" .as f1 \&\ \&
.			if "\\*(iM"Dp" .as f1 \&\ \&
.			if "\\*(iM"Op" .as f1 \&\ \&
.			if "\\*(iM"Cx" .as f1 \&\ \&
.			if "\\*(iM"Dq" .as f1 \& \&
.			if "\\*(iM"Sq" .as f1 \& \&
.			if "\\*(iM"Pq" .as f1 \& \&
.			if "\\*(iM"Aq" .as f1 \& \&
.		\}
.		el .as f1 \& \&
.	\}
.	nB \\$2 \\$3 \\$4 \\$5 \\$6 \\$7 \\$8 \\$9
.\}
.el \{\
.	rZ \\$1
.	ie \\n(rZ .as f1 \&\f\\n(cF\\$1
.	el .as f1 \&\\$1\f\\n(cF
.	if "\\*(iM"" \{\&\\*(f1
.		ds f1
.	\}
.	hy
.\}
..
.de fB
.hy 0
.if \\n(.$==0 .tm Usage error: called with empty arguments (empty quotes)?
.ie \\n(.$>1 \{\
.	rZ \\$1
.	ie \\n(rZ .as f1 \&\f\\n(cF\\$1\fP
.	el \{\
.		ie "\\$1"-" .as f1 \&\-\-
.		el .as f1 \&\-\\$1
.	\}
.	rZ \\$2
.	if !\\n(rZ \{\
.		ie !"\\*(iM""\{\
.\"			I surrender
.			if "\\*(iM"Tp" .as f1 \&\ \&
.			if "\\*(iM"Dp" .as f1 \&\ \&
.			if "\\*(iM"Op" .as f1 \&\ \&
.			if "\\*(iM"Cx" .as f1 \&\ \&
.			if "\\*(iM"Dq" .as f1 \& \&
.			if "\\*(iM"Sq" .as f1 \& \&
.			if "\\*(iM"Pq" .as f1 \& \&
.			if "\\*(iM"Aq" .as f1 \& \&
.		\}
.		el .as f1 \& \&
.	\}
.	fB \\$2 \\$3 \\$4 \\$5 \\$6 \\$7 \\$8 \\$9
.\}
.el \{\
.	rZ \\$1
.	ie \\n(rZ .as f1 \&\f\\n(cF\\$1
.	el \{\
.		ie "\\$1"-" .as f1 \&\-\-\f\\n(cF
.		el .as f1 \&\-\\$1\f\\n(cF
.	\}
.	if "\\*(iM"" \{\&\\*(f1
.		ds f1
.	\}
.	hy
.\}
..
.\"
.\" Single quoted Items
.\" eF, sB g[0-9] and f2
.de Sq
.nr eF 0
.ie \\n(.$==0 \{\
.       ie "\\*(iM"" \&\\*(sL\&\\*sR
.       el .as f1 \&\\*(sL\&\\*(sR
.\}
.el \{\
.       ie "\\*(iM"" \{\
.		ds f1 \&\\*(sL
.		ds iM Sq
.	\}
.       el .as f1 \&\\*(sL
.       sB \\$1 \\$2 \\$3 \\$4 \\$5 \\$6 \\$7 \\$8 \\$9
.	ie \\n(eF>0 .\\*(g1 \\*(g2 \\*(g3 \\*(g4 \\*(g5 \\*(g6 \\*(g7 \\*(g8
.	el .as f1 \\*(g0
.	as f1 \\*(sR
.	if !"\\*(f2"" .as f1 \\*(f2
.	if "\\*(iM"Sq" \{\
\&\\*(f1
.		ds f1
.		ds iM
.	\}
.	ds f2
.	rm  g0 g1 g2 g3 g4 g5 g6 g7 g8 g9
.	nr eF 0
.\}
..
.\"
.\" Double quoted Items
.de Dq
.nr Ef 0
.ie \\n(.$==0 \{\
.       ie "\\*(iM"" \&\\*(Lq\&\\*(Rq
.       el .as f1 \&\\*(Lq\&\\*(Rq
.\}
.el \{\
.       ie "\\*(iM"" \{\
.               ds f1 \&\\*(Lq
.               ds iM Dq
.       \}
.       el .as f1 \&\\*(Lq
.       Sb \\$1 \\$2 \\$3 \\$4 \\$5 \\$6 \\$7 \\$8 \\$9
.       ie \\n(Ef>0 .\\*(k1 \\*(k2 \\*(k3 \\*(k4 \\*(k5 \\*(k6 \\*(k7 \\*(k8
.       el .as f1 \\*(k0
.       as f1 \\*(Rq
.       if !"\\*(f4"" .as f1 \\*(f4
.       if "\\*(iM"Dq" \{\
\&\\*(f1
.               ds f1
.               ds iM
.       \}
.       ds f4
.       rm  k0 k1 k2 k3 k4 k5 k6 k7 k8 k9
.       nr Ef 0
.\}
..
.\"
.\" Parenthesis quoted Items
.de Pq
.nr pQ 0
.ie \\n(.$==0 \{\
.       ie "\\*(iM"" \&(\&)
.       el .as f1 \&(\&)
.\}
.el \{\
.       ie "\\*(iM"" \{\
.               ds f1 \&(
.               ds iM Pq
.       \}
.       el .as f1 \&(
.       pB \\$1 \\$2 \\$3 \\$4 \\$5 \\$6 \\$7 \\$8 \\$9
.       ie \\n(pQ>0 .\\*(y1 \\*(y2 \\*(y3 \\*(y4 \\*(y5 \\*(y6 \\*(y7 \\*(y8
.       el .as f1 \\*(y0
.       as f1 \&)
.       if !"\\*(f3"" .as f1 \\*(f3
.       if "\\*(iM"Pq" \{\
\&\\*(f1
.               ds f1
.               ds iM
.       \}
.       ds f3
.       rm  y0 y1 y2 y3 y4 y5 y6 y7 y8 y9
.       nr pQ 0
.\}
..
.\" eF, sB g[0-9] and f2
.de sB
.hy 0
.ie \\n(.$==0 .tm Sick Logic: macro sB
.el \{\
.	ie \\n(eF>=1 .nr eF \\n(eF+1
.	el \{\
.		mN \\$1
.		if \\n(mN .nr eF \\n(eF+1
.	\}
.       rZ \\$1
.       ie \\n(rZ .as f2 \\$1
.       el \{\
.		ie \\n(eF<1 .as g\\n(eF \\$1
.		el .as g\\n(eF \\$1
.	\}
.       if \\n(.$>1 \{\
.		rZ \\$2
.	        if \\n(rZ==0 \{\
.			if \\n(eF<1 \{\
.				as g\\n(eF \& \&
.			\}
.		\}
.		sB \\$2 \\$3 \\$4 \\$5 \\$6 \\$7 \\$8 \\$9
.	\}
.\}
..
.de Sb
.hy 0
.ie \\n(.$==0 .tm Sick Logic: macro Sb
.el \{\
.       ie \\n(Ef>=1 .nr Ef \\n(Ef+1
.	el \{\
.		mN \\$1
.	        if \\n(mN .nr Ef \\n(Ef+1
.	\}
.       rZ \\$1
.       ie \\n(rZ .as f4 \\$1
.       el \{\
.               ie \\n(Ef<1 .as k\\n(Ef \\$1
.               el .as k\\n(Ef \\$1
.       \}
.       if \\n(.$>1 \{\
.               rZ \\$2
.               if \\n(rZ==0 \{\
.                       if \\n(Ef<1 \{\
.                               as k\\n(Ef \& \&
.                       \}
.               \}
.               Sb \\$2 \\$3 \\$4 \\$5 \\$6 \\$7 \\$8 \\$9
.       \}
.\}
..
.de pB
.hy 0
.ie \\n(.$==0 .tm Sick Logic: macro pB
.el \{\
.       ie \\n(pQ>=1 .nr pQ \\n(pQ+1
.       el \{\
.               mN \\$1
.               if \\n(mN .nr pQ \\n(pQ+1
.       \}
.       rZ \\$1
.       ie \\n(rZ .as f3 \\$1
.       el \{\
.               ie \\n(pQ<1 .as y\\n(pQ \\$1
.               el .as y\\n(pQ \\$1
.       \}
.       if \\n(.$>1 \{\
.               rZ \\$2
.               if \\n(rZ==0 \{\
.                       if \\n(pQ<1 \{\
.                               as y\\n(pQ \& \&
.                       \}
.               \}
.               pB \\$2 \\$3 \\$4 \\$5 \\$6 \\$7 \\$8 \\$9
.       \}
.\}
..
.de aQ
.hy 0
.ie \\n(.$==0 .tm Bad Syntax: .Aq
.el \{\
.       ie \\n(aQ>=1 .nr aQ \\n(aQ+1
.       el \{\
.               mN \\$1
.               if \\n(mN .nr aQ \\n(aQ+1
.       \}
.       rZ \\$1
.       ie \\n(rZ .as aZ \\$1
.       el \{\
.               ie \\n(aQ<1 .as a\\n(aQ \\$1
.               el .as a\\n(aQ \\$1
.       \}
.       if \\n(.$>1 \{\
.               rZ \\$2
.               if \\n(rZ==0 \{\
.                       if \\n(aQ<1 \{\
.                               as a\\n(aQ \& \&
.                       \}
.               \}
.               aQ \\$2 \\$3 \\$4 \\$5 \\$6 \\$7 \\$8 \\$9
.       \}
.\}
..
.\" Angle Bracket Quoted Items
.de Aq
.nr aQ 0
.ie \\n(.$==0 \{\
.       ie "\\*(iM"" \&<\&>
.       el .as f1 \&<\&>
.\}
.el \{\
.       ie "\\*(iM"" \{\
.               ds f1 \&<
.               ds iM Aq
.       \}
.       el .as f1 \&<
.       aQ \\$1 \\$2 \\$3 \\$4 \\$5 \\$6 \\$7 \\$8
.       ie \\n(aQ>0 .\\*(a1 \\*(a2 \\*(a3 \\*(a4 \\*(a5 \\*(a6 \\*(a7 \\*(a8
.       el .as f1 \\*(a0
.       as f1 \&>
.       if !"\\*(aZ"" .as f1 \\*(aZ
.       if "\\*(iM"Aq" \{\
\&\\*(f1
.               ds f1
.               ds iM
.       \}
.       ds aZ
.       rm  a0 a1 a2 a3 a4 a5 a6 a7 a8
.       nr aQ 0
.\}
..
.\" macro Name test, return macro register value if true
.if \n(.g .ig
.de mN
.nr mN 0
.sW \\$1
.if \\n(sW==2 \{\
.	if \\n(\\$1 .nr mN \\n(\\$1
.\}
..
.if !\n(.g .ig
.de mN
.nr mN 0
.if \A'\\$1' \{\
.	sW \\$1
.	if \\n(sW==2 \{\
.		if \\n(\\$1 .nr mN \\n(\\$1
.	\}
.\}
..
.\" Punctuation test (using z registers), return 1 if true
.if \n(.g .ig
.de rZ
.nr rZ 0
.sW \\$1
.if \\n(sW==1 \{\
.	if \\n(z\\$1==1 \{\
.		nr rZ 1
.	\}
.\}
..
.if !\n(.g .ig
.de rZ
.nr rZ 0
.if \A'\\$1' \{\
.	sW \\$1
.	if \\n(sW==1 \{\
.		if \\n(z\\$1==1 \{\
.			nr rZ 1
.		\}
.	\}
.\}
..
.\"
.\" sW returns number of characters in a string
.if t \{\
.nr fW \w'\fC,'
.de sW
.nr sW \w'\fC\\$1'
.\}
.if n \{\
.nr fW \w'0'
.de sW
.nr sW \w'\\$1'
.\}
.ie \\n(sW>=\\n(fW \{\
.	ie \\n(sW%\\n(fW .nr sW (\\n(sW/\\n(fW)+1
.	el .nr sW \\n(sW/\\n(fW
.\}
.el .nr sW 0
..
.\"	Option Expression -
.\"	TODO - add line overflow check (right!)
.nr eP 0
.ds e1
.nr oE 0
.nr hP 0
.ds hP
.nr Ep 0
.de Op
.hy 0
.if "\\*(iM"" \{\
.	ds iM Op
.       ds f1 \&
.\}
.as f1 \&\\*(lB
.\" .tm Op:  \\$1 \\$2 \\$3 \\$4 \\$5 \\$6 \\$7 \\$8 \\$9
.dO \\$1 \\$2 \\$3 \\$4 \\$5 \\$6 \\$7 \\$8 \\$9
.ie !"\\$1"Cx" .oE
.el .nr oE \\n(oE+1
..
.\"
.\" just for mike, with every bite of garlic in mind (oops, i mean burp).
.\" dO: go dOwn an argument vector and test each argument to see if
.\" a macro name or punctuation. stash in respective place along
.\" with its arguments.
.nr oO 0
.nr oP 0
.nr aO 0
.de dO
.mN \\$1
.ie \\n(mN \{\
.       if \\n(oP  \{\
.               if \\n(hP \{\
.                       nr oZ 1
.                       oZ
.                       Oz
.               \}
.               if \\n(e1==1 \{\
.\\*(e1 \\*(e2 \\*(e3 \\*(e4 \\*(e5 \\*(e6 \\*(e7 \\*(e8 \\*(e9
.               \}
.               uO
.		if !(\\n(oO:\\n(aO) .as f1 \& \&
.	\}
.       ie "\\$1"Op" \{\
.               as f1 \&\\*(lB
.               nr aO \\n(aO+1
.       \}
.	el \{\
.               nr eP \\n(eP+1
.               ds e\\n(eP \\$1
.               nr e\\n(eP 1
.       \}
.\}
.el \{\
.\" .tm dO: $1: \\$1: eP \\n(eP e[\\n(eP]: \\*(e\\n(ePEE
.	rZ \\$1
.	ie \\n(rZ \{\
.\" .tm dO:rZ: $1: \\$1: eP \\n(eP e[\\n(eP]: \\*(e\\n(eP
.		nr hP \\n(hP+1
.		ds h\\n(hP \\$1
.	\}
.	el \{\
.\" .tm dO:word $1: \\$1: eP \\n(eP e[\\n(eP]: \\*(e\\n(ePEE
.		if \\n(eP==0:\\n(e\\n(eP==1 .nr eP \\n(eP+1
.		if \\n(eZ .as e\\n(eP \& \&
.		as e\\n(eP " \&\\$1
.\" .		ds e\\n(eP \&\\$1
.		nr eZ \\n(eZ+1
.	\}
.\}
.nr oP 1
.ie \\n(.$>1 \{\
.	dO \\$2 \\$3 \\$4 \\$5 \\$6 \\$7 \\$8 \\$9
.\}
.el \{\
.     ie \\n(e1 \{\
.\\*(e1 \\*(e2 \\*(e3 \\*(e4 \\*(e5 \\*(e6 \\*(e7 \\*(e8 \\*(e9
.	\}
.     el \{\
.	as f1 \\*(e1
.	\}
.\}
..
.\" handle old style arguments such as the arg -Idir
.\" in adb, .Oo is a toggle.
.de Oo
.ie \\n(oO .nr oO 0
.el .nr oO 1
..
.\" stash punctuation
.de oZ
.if \\n(hP>=\\n(oZ \{\
.	nr eP \\n(eP+1
.	ds e\\n(eP \\*(h\\n(oZ
.	nr oZ \\n(oZ+1
.	oZ
.\}
..
.\" clean up punctuation vector
.de Oz
.if \\n(hP>0 \{\
.	rm h\\n(hP
.	nr hP \\n(hP-1
.	Oz
.\}
..
.\" uO: go back up created vector cleaning it up along the way
.de uO
.if \\n(eP>0 \{\
.	rm e\\n(eP
.	rr e\\n(eP
.	nr eP \\n(eP-1
.	nr oP 0
.	nr eZ 0
.	uO
.\}
..
.\" option end
.de oE
.uO
.ie \\n(hP \{\
.       as f1 \\*(rB\\*(h1\\*(h2\\*(h3
.	Oz
.	nr oZ 0
.\}
.el \{\
.	as f1 \\*(rB
.\}
.ie "\\*(iM"Op" \{\
.	if \\n(aO .aO
.if t \{\
.	if (\\n(.lu-\\n(.ku-\\n(.ou-(2*\\n(fWu))<\w'\fC\\*(f1'u .br
.\}
.if n \{\
.	nr aa \w'\\*(f1'u
.\" .	nr qq \\n(.lu-\\n(.ku-\\n(.ou
.\" \&aa == \\n(aa, f1==\\*(f1, qq==\\n(qq
.	if (\\n(.lu-\\n(.ku-\\n(.ou-\\n(aau)<=(8*\\n(fWu) .br
.\}
\&\\*(f1
.	ds iM
.	ds f1
.	hy
.\}
.el .nr oE \\n(oE-1
..
.de aO
.as f1 \\*(rB
.nr aO \\n(aO-1
.if \\n(aO >0 .aO
..
.\"
.de Xr
.if \\n(.$<=1 \{\
.	ie \\n(.$==1 \{\
.		if !"\\*(iM"" .as f1 \&\\*(xR\\$1\fP
.		if "\\*(iM"" \&\\*(xR\\$1\fP
.	\}
.	el .tm Xr Usage: .Xr manpage_name [section#] \\*(Pu
.\}
.if \\n(.$==2 \{\
.	rZ \\$2
.	ie "\\*(iM"" \{\
.		ie \\n(rZ \&\\*(xR\\$1\fP\\$2
.		el \&\\*(xR\\$1\fP(\\$2)
.	\}
.	el \{\
.		ie \\n(rZ .as f1 \&\\*(xR\\$1\fP\\$2
.		el .as f1 \&\\*(xR\\$1\fP(\\$2)
.	\}
.\}
.if \\n(.$>=3 \{\
.	rZ \\$2
.	ie \\n(rZ \{\
.		ie !"\\*(iM"" .as f1 \&\\*(xR\\$1\fP\\$2\\$3\\$4\\$5\\$6\\$7\\$8
.		el \&\\*(xR\\$1\fP\\$2\\$3\\$4\\$5\\$6\\$7\\$8
.	\}
.	el \{\
.		rZ \\$3
.		ie \\n(rZ \{\
.			if !"\\*(iM"" \{\
.			     as f1 \&\\*(xR\\$1\fP(\\$2)\\$3\\$4\\$5\\$6\\$7\\$8
.			\}
.			if "\\*(iM"" \{\
\&\\*(xR\\$1\fP(\\$2)\\$3\\$4\\$5\\$6\\$7\\$8
.			\}
.		\}
.		el \{\
.			tm rZ = \\n(rZ  the arg is \\$3
.			tm Xr-XX Usage: .Xr manpage_name [section#] \\*(Pu
.		\}
.	\}
.\}
..
.\"
.\"
.de Ex
.tm Ex defunct, Use .Dl: \\$1 \\$2 \\$3 \\$4 \\$5 \\$6 \\$7 \\$8 \\$9
..
.\" Display (one) Line of text.
.de Dl
.ie "\\*(iM"" \{\
'	ta .5i 1i 1.5i 2i 2.5i 3i 3.5i 4i 4.5i 5i 5.5i 6i 6.5i
.	in \\n(.iu+\\n(Dsu
.	mN \\$1
.	ie \\n(mN .\\$1 \\$2 \\$3 \\$4 \\$5 \\$6 \\$7 \\$8 \\$9
.	el \{\
.		nr cF \\n(.f
.\"	 Literal font is none specified
\&\\*(lI\\$1 \\$2 \\$3 \\$4 \\$5 \\$6 \\$7 \\$8 \\$9
.		ft \\n(cF
.	\}
.	in \\n(.iu-\\n(Dsu
.\}
.el \{\
.	mN \\$1
.	ie \\n(mN .\\$1 \\$2 \\$3 \\$4 \\$5 \\$6 \\$7 \\$8
.	el \{\
.		nr cF \\n(.f
.		ds f1 \&\\*(lI\\&\\$1 \\$2 \\$3 \\$4 \\$5 \\$6 \\$7 \\$8
.		as f1 \&\f\\n(cF
.	\}
.\}
..
.\"
.\"
.\" user set Tagged Paragraph Width (used in both Dp and Tp)
.de Tw
.ie \\n(.$==0 \{\
.	nr aa 0
.\}
.el \{\
.	mN \\$1
.	ie \\n(sW>2 \{\
.		nr tW (\\n(sW+3)*\\n(fWu)
.	\}
.	el \{\
.		ie \\n(mN .nr tW \\n(mN
.		el .nr tW \\$1
.	\}
.	nr tF 1
.\}
..
.\"
.de Dw
.Tw \\$1
..
.\"
.de Di
.ie \\n(.$==0 \{\
.	nr tI \\n(Dsu
.\}
.el \{\
.	sW \\$1
.	if \\n(sW>=2 \{\
.		nr tI \\$1u
.	\}
.	if \\n(sW<2 \{\
.		if "\\$1"L" \{\
.			nr tI 0
.		\}
.	\}
.\}
..
.\" tagged paragraph
.\" initialize baby stack variables
.nr np 0
.nr p1 0
.ds s\n(np
.\"
.de Tp
.ie "\\$1"" .pE p s np
.el \{\
.	ds iM Tp
.	mN \\$1
.	ie \\n(tF \{\
.		ds tC Tw
.		nr tC 1
.		nr tF 0
.	\}
.	el \{\
.		if !"Tw"\\*(s\\n(np" \{\
.			ie \\n(mN \{\
.				ds tC \\$1
.				nr tW \\n(mN
.			\}
.			el \{\
.				ds tC Tx
.				nr tW \\n(Tx
.			\}
.			if !"\\*(tC"\\*(s\\n(np" .nr tC 1
.		\}
.	\}
.	sp \\n(vVu
.	if !\\n(cR .ne 2
.	if \\n(tC \{\
.		nr np \\n(np+1
.		nr p\\n(np \\n(tW
.		ds s\\n(np \\*(tC
.		nr tC 0
.		ds tC
.		in \\n(.iu+\\n(p\\n(npu
.	\}
.	ie \\n(mN \{\
.		ds f1
.		\\$1 \\$2 \\$3 \\$4 \\$5 \\$6 \\$7 \\$8 \\$9
.		if !"\\$1"Cx" .pT st p np
.	\}
.	el \{\
.		br
.		ev 1
.		fi
.		di Td
\&\\$1 \\$2 \\$3 \\$4 \\$5 \\$6 \\$7 \\$8 \\$9
.		br
.		di
.		ev
.		na
.		ds tD \\*(Td\\
.		pT di p np
.	\}
.\}
..
.\"
.\"
.\" Complex Expression Macro
.\"
.\"	 TODO: add length across line boundary check (like Li)
.de Cx
.hy 0
.ie \\n(.$==0 \{\
.	if "\\*(iM"Cx" \{\
.		ds iM
.		if \\n(oE .oE
\&\\*(f1
.		ds f1
.	\}
.	if "\\*(iM"Tp" .pT st p np
.	if "\\*(iM"Dp" .pT st q mp
.\}
.el \{\
.	if "\\*(iM"" \{\
.		ds iM Cx
.		ds f1 \&
.	\}
.	mN \\$1
.\" Here are the args: `\\$1'  `\\$2'  `\\$3'  `\\$4'
.	ie \\n(mN .\\$1 \\$2 \\$3 \\$4 \\$5 \\$6 \\$7 \\$8 \\$9
.	el \{\
.		as f1 \&\\$1
.		if \\n(.$>1 .Cx \\$2 \\$3 \\$4 \\$5 \\$6 \\$7 \\$8 \\$9
.	\}
.\}
..
.\" Prefix string in default font to content specified string
.de Pf
.Cx \\$1
.\\$2 \\$3 \\$4 \\$5
.Cx
..
.\" Suffix string in default font to content specified string
.de Sf
.Cx \\$1 \\$2
.Cx \\$3
.Cx
..
.\" Simple Option Begin
.de Ob
.hy 0
.ie "\\*(iM"" \{\
.	ev 2
.	fi
.	di oB
.\}
.el \{\
.tm shouldn't be here
.	as f1 \&[
.	mN \\$1
.	ie \\n(mN .\\$1 \\$2 \\$3 \\$4 \\$5 \\$6 \\$7 \\$8 \\$9
.	el \{\
.		as f1 \&\\$1
.		if \\n(.$>1 .Oc \\$2 \\$3 \\$4 \\$5 \\$6 \\$7 \\$8 \\$9
.	\}
.\}
..
.de Oc
.as f1 \&\\$1
.if \\n(.$>1 .Oc \\$2 \\$3 \\$4 \\$5 \\$6 \\$7 \\$8 \\$9
..
.de Oe
.hy 0
.ie "\\*(iM"" \{\
.	br
.	di
.	ev
.	ds bO \\*(oB\\
\&[\\*(bO\&]
.\}
.el \{\
.	as f1 \&]
.\}
..
.\" White space for Cx
.de Ws
.Cx \&\ \&
..
.\" tagged paragraph
.\" initialize baby stack variables
.nr mp 0
.nr q1 0
.ds r\n(np
.\"
.\" Complex Dp tag
.de Dc
.Dp Cx \\$1 \\$2 \\$3 \\$4 \\$5 \\$6 \\$7 \\$8
..
.\" Complex Tp tag
.de Tc
.Tp Cx \\$1 \\$2 \\$3 \\$4 \\$5 \\$6 \\$7 \\$8
..
.\" Tag with a flag and an argument with a space
.de Ta
.if "\\$2"" \{\
.	Tp Fl \\$1
.\}
.el \{\
.	Tp Fl \\$1
.	Cx \&\ \&
.	Ar \\$2 \\$3
.	Cx
.\}
..
.de Da
.Dp Cx Fl \\$1
.Ws
.Ar \\$2 \\$3
.Cx
..
.de To
.Tp Cx Fl \\$1
.Ar \\$2 \\$3
.Cx
..
.de Do
.Dp Cx Fl \\$1
.Ar \\$2 \\$3
.Cx
..
.\" Blended tag toggle
.de Bt
.ie \\n(tP==0 .nr tP 1
.el .nr tP 0
..
.\" Bullet paragraph
.de Bu
.Tp Sy \&\(bu
..
.\" Display tagged paragraph
.de Dp
.ie "\\$1"" \{\
.	pE q r mp
.	sp \\n(vVu
.\}
.el \{\
.       ds iM Dp
.       mN \\$1
.       ie \\n(tF \{\
.               ds tC Tw
.               nr tC 1
.               nr tF 0
.       \}
.       el \{\
.               if !"Tw"\\*(r\\n(mp" \{\
.                       ie \\n(mN \{\
.                               ds tC \\$1
.                               nr tW \\n(mN
.                       \}
.                       el \{\
.                               ds tC Tx
.                               nr tW \\n(Tx
.                       \}
.                       if !"\\*(tC"\\*(r\\n(mp" .nr tC 1
.               \}
.       \}
.       if !\\n(cR .ne 2
.       if \\n(tC \{\
.               nr mp \\n(mp+1
.               nr q\\n(mp \\n(tW
.               ds r\\n(mp \\*(tC
.               nr tC 0
.               ds tC
.		ie \\n(tIu==\\n(Dsu .nr i\\n(mp \\n(Dsu
.		el \{\
.			nr i\\n(mp \\n(tIu
.			nr tI \\n(Dsu
.		\}
.              	in \\n(.iu+\\n(i\\n(mpu
.		sp \\n(vVu
.		in \\n(.iu+\\n(\\q\\n(mpu
.       \}
.       ie \\n(mN \{\
.               \\$1 \\$2 \\$3 \\$4 \\$5 \\$6 \\$7 \\$8 \\$9
.               if !"\\$1"Cx" .pT st q mp
.       \}
.       el \{\
.               br
.               ev 1
.               fi
.               di Td
\&\\$1 \\$2 \\$3 \\$4 \\$5 \\$6 \\$7 \\$8 \\$9
.               br
.               di
.               ev
.               na
.               ds tD \\*(Td\\
.               pT di q mp
.       \}
.\}
..
.\"
.\" .pE number_stack string_stack counter
.de pE
.ie "\\$3"mp" \{\
.	in \\n(.iu-(\\n(\\$1\\n(\\$3u)-(\\n(i\\n(mpu)
.	rr i\\n(mp
.\}
.el .in \\n(.iu-\\n(\\$1\\n(\\$3u
.\" .in \\n(.iu-\\n(\\$1\\n(\\$3u
.if \\n(\\$3<=0 .tm Extraneous call .Tp or .Dp
.rr \\$1\\n(\\$3
.rm \\$2\\n(\\$3
.nr \\$3 \\n(\\$3-1
.ds iM
..
.\"
.\" .pT [st or di] number_stack counter
.de pT
.ie "\\$1"st" \{\
.	nr bb \\n(\\$2\\n(\\$3u
.	ti -\\n(bbu
.	ie (\\n(\\$2\\n(\\$3u-2n)<=\w'\\*(f1'u \{\&\\*(f1\\*(tP
.		if \\n(tP==0 .br
.	\}
.	el \\*(f1\h'|\\n(\\$2\\n(\\$3u'\c
.\}
.el \{\
.       ti -\\n(\\$2\\n(\\$3u
.	ie (\\n(\\$2\\n(\\$3u-2n)<=\\n(dlu \{\&\\*(tD\\*(tP
.	       if !\\n(tP .br
.	\}
.	el \\*(tD\h'|\\n(\\$2\\n(\\$3u'\c
.	if t 'ad
.\}
.	ds iM
.	ds f1
'fi
..
.\"
.\" The new SH
.\"
.de Sh
.\" set Sh state off, check for list state before calling indent (.In)
.nr nS 0
.nr sE 0
.ie "\\$1"NAME" \{\
.\"	name state on, housekeep (headers & footers)
.	hK
'	in 0
.\}
.el \{\
.	if "\\$1"SYNOPSIS" .nr nS 1
.	in 0
.\}
.pL
'sp
.ns
.ta .5i 1i 1.5i 2i 2.5i 3i 3.5i 4i 4.5i 5i 5.5i 6i 6.5i
.if !\\n(cR .ne 3
'fi
\&\fB\\$1 \|\\$2 \|\\$3 \|\\$4 \|\\$5 \|\\$6 \|\\$7 \|\\$8 \|\\$9
\&\fP\&
.in \\n(.iu+\\n(Tiu
.if "\\$1"SEE" .nr sE 1
.ns
..
.\"
.\" Nd minus sign for an en dash used in .Sh Name
.de Nd
\&\-\& \\$1 \\$2 \\$3 \\$4 \\$5 \\$6 \\$7 \\$8 \\$9
..
.de Ss
.sp
.ti -.25i
\&\fB\\$1 \|\\$2 \|\\$3 \|\\$4 \|\\$5 \|\\$6 \|\\$7 \|\\$8 \|\\$9
\&\fP\&
.ta .5i 1i 1.5i 2i 2.5i 3i 3.5i 4i 4.5i 5i 5.5i 6i 6.5i
.if !\\n(cR .ne 2
.br
..
.\"	.if "\\$1"Ss" .in \\n(.iu+\\n(sIu
.\"..
.\"
.\"
.\" Column Macro
.\"
.hy 0
.de Cw
.ie \\n(.$==0 \{\
.	br
.	in \\n(.iu-\\n(eWu
.	ta .5i 1i 1.5i 2i 2.5i 3i 3.5i 4i 4.5i 5i 5.5i 6i 6.5i
.\}
.el \{\
.	Pp
.	if \\n(.$==1 \{\
.		ta \w'\\$1    'u
.		nr eW \w'\\$1    'u
'		in \\n(.iu+\\n(eWu
.	\}
.	if \\n(.$==2 \{\
.		ta \w'\\$1    'u +\w'\\$2    'u
.		nr eW \w'\\$1    'u+\w'\\$2    'u
'		in \\n(.iu+\\n(eWu
.	\}
.	if \\n(.$==3 \{\
.		ta \w'\\$1    'u +\w'\\$2    'u +\w'\\$3    'u
.		nr eW \w'\\$1    'u+\w'\\$2    'u+\w'\\$3    'u
'		in \\n(.iu+\\n(eWu
.	\}
.	if \\n(.$==4 \{\
.	ta \w'\\$1    'u +\w'\\$2    'u +\w'\\$3    'u +\w'\\$4    'u
.	nr eW \w'\\$1    'u+\w'\\$2    'u+\w'\\$3    'u +\w'\\$4    'u
'	in \\n(.iu+\\n(eWu
.	\}
.	if \\n(.$==5 \{\
.ta \w'\\$1    'u +\w'\\$2    'u +\w'\\$3    'u +\w'\\$4    'u +\w'\\$5    'u
.nr eW \w'\\$1    'u +\w'\\$2    'u +\w'\\$3    'u +\w'\\$4    'u +\w'\\$5    'u
'	in \\n(.iu+\\n(eWu
.	\}
.\}
..
.de Cl
.ti -\\n(eWu
.mN \\$1
.ie \\n(mN .\\$1 \\$2 \\$3 \\$4 \\$5 \\$6 \\$7 \\$8 \\$9
.el \\$1 \\$2 \\$3 \\$4 \\$5 \\$6 \\$7 \\$8 \\$9
..
.nr dQ 0
.de Ds
.ie !"\\$1"" \{\
.	mN d\\$1
.	if \\n(mN \{\
.		nr dQ \\n(dQ+1
.		d\\$1
.	\}
.\}
.el .br
.nf
..
.de Df
.ie !"\\$1"" \{\
.       mN d\\$1
.       if \\n(mN \{\
.               nr dQ \\n(dQ+1
.               d\\$1
.       \}
.\}
.el .br
..
.de Dn
\\$1 \\$2 \\$3 \\$4 \\$5 \\$6 \\$7 \\$8 \\$9
.nf
..
.de dI
.nr d\\n(dQ \\n(dIu
.in \\n(.iu+\\n(dIu
..
.de dC
.nr d\\n(dQ (\\n(.l-\\n(.i)/4u
.in \\n(.iu+\\n(d\\n(dQu
..
.de dR
.nr d\\n(dQ (\\n(.l/3)u
.in \\n(.iu+\\n(d\\n(dQu
..
.de dL
.nr aa 0
..
.de De
.br
.if \\n(d\\n(dQ \{\
.	in \\n(.iu-\\n(d\\n(dQu
.	rr d\\n(dQ
.	nr dQ \\n(dQ-1
.\}
.fi
..
.\"
.de Fn
.ie \\n(.$==0 \{\
.	tm Usage: .Fn function_name function_arg(s) ... \\*(Pu
.\}
.el \{\
.	nr cF \\n(.f
.	ie \\n(.$==1 .ds f1 \&\\*(nM\\$1\fP\\*(lP\fP\\*(rP\fP
.	el \{\
.		ds f1 \\*(nM\\$1\fP\\*(lP
.		nr aa 0
.		rC \\$2 \\$3 \\$4 \\$5 \\$6 \\$7 \\$8 \\$9
.	\}
.	if "\\*(iM"" \{\\&\\*(f1
.		ds f1
.	\}
.\}
..
.\"
.de rC
.rZ \\$1
.ie \\n(rZ \{\
.	as f1 \f\\n(cF\\*(rP\f\\n(cF\\$1\\$2\\$3\\$4\\$5\\$6\\$7
.\}
.el \{\
.	ie \\n(aa .as f1 \fP, \\*(aR\\$1
.	el .as f1 \\*(aR\\$1
.	nr aa 1
.	ie \\n(.$>1 .rC \\$2 \\$3 \\$4 \\$5 \\$6 \\$7
.	el .as f1 \fP\\*(rP\fP
.\}
..