.\" Copyright (c) 1991, 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. [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-common	8.1 (Berkeley) 06/08/93
.\"
.\"     %beginstrip%
.
.
.\" Macro Identifiers.  For each user macro a corresponding register with
.\" the same name must exist.  Its value must not be zero.
.
.nr %A 1
.nr %B 1
.nr %D 1
.nr %I 1
.nr %J 1
.nr %N 1
.nr %O 1
.nr %P 1
.nr %Q 1
.nr %R 1
.nr %T 1
.nr %U 1
.nr %V 1
.nr Ac 3
.nr Ad 12n
.nr An 12n
.nr Ao 12n
.nr Ap 2
.nr Aq 12n
.nr Ar 12n
.nr At 1
.nr Bc 3
.nr Bf 8n\" ?
.nr Bk 8n\" ?
.nr Bl 1
.nr Bo 12n
.nr Bq 12n
.nr Brc 3
.nr Bro 12n
.nr Brq 12n
.nr Bsx 1
.nr Bt 8n\" ?
.nr Bx 1
.nr Cd 12n
.nr Cm 10n
.nr D1 8n\" ?
.nr Dc 3
.nr Dl 8n\" ?
.nr Dt 8n\" ?
.nr Do 12n
.nr Dq 12n
.nr Ds 6n\" many manpages still use this as a -width value
.nr Dv 12n
.nr Ec 3
.nr Ef 8n\" ?
.nr Ek 8n\" ?
.nr El 1
.nr Em 10n
.nr En 12n
.nr Eo 12n
.nr Eq 12n
.nr Er 17n
.nr Es 12n
.nr Ev 15n
.nr Ex 1
.nr Fa 12n
.nr Fc 3
.nr Fd 12n\" ?
.nr Fl 10n
.nr Fn 16n
.nr Fo 16n
.nr Fr 12n\" ?
.nr Ft 8n\" ?
.nr Fx 1
.nr Ic 10n
.nr In 12n
.nr It 8n\" ?
.nr Lb 11n
.nr Li 16n
.nr Lk 6n\" ?
.nr Lp 8n\" ?
.nr Me 6n
.nr Ms 6n
.nr Mt 6n\" ?
.nr Nd 8n\" ?
.nr Nm 10n
.nr No 12n
.nr Ns 2
.nr Nx 1
.nr Oc 3
.nr Oo 10n
.nr Op 14n
.nr Os 6n\" ?
.nr Ox 1
.nr Pa 32n
.nr Pc 3
.nr Pf 12n
.nr Po 12n
.nr Pp 8n\" ?
.nr Pq 12n
.nr Qc 3
.nr Ql 16n
.nr Qo 12n
.nr Qq 12n
.nr Rv 1
.nr Sc 3
.nr Sh 8n
.nr Sm 8n\" ?
.nr So 12n
.nr Sq 12n
.nr Ss 8n
.nr St 8n\" ?
.nr Sx 16n
.nr Sy 6n
.nr Ta 2
.nr Tn 10n
.nr Ud 8n\" ?
.nr Ux 1
.nr Va 12n
.nr Vt 8n\" ?
.nr Xc 3
.nr Xo 1
.nr Xr 10n
.
.
.\" macros which must be processed after the closing delimiter of `Op'
.\" and friends
.ds doc-after-Ao
.ds doc-after-Bo
.ds doc-after-Bro
.ds doc-after-Do
.ds doc-after-Eo
.ds doc-after-Fo
.ds doc-after-Ns
.ds doc-after-Oo
.ds doc-after-Po
.ds doc-after-Qo
.ds doc-after-So
.ds doc-after-Xo
.
.
.nr doc-display-indent 6n
.
.
.\" space strings
.
.ds doc-soft-space " \"
.ds doc-hard-space \~
.ds doc-tab \t
.
.
.eo
.
.
.\" punctuation values (suffix=3, prefix=4)
.
.nr doc-punct. 3
.nr doc-punct, 3
.nr doc-punct: 3
.nr doc-punct; 3
.nr doc-punct( 4
.nr doc-punct) 3
.nr doc-punct[ 4
.nr doc-punct] 3
.nr doc-punct? 3
.nr doc-punct! 3
.
.
.\" header assembly macros
.
.\" NS doc-document-title global string
.\" NS   the title of the manual page
.
.ds doc-document-title UNTITLED
.
.
.\" NS doc-volume global string
.\" NS   the volume where the manual page belongs to
.
.ds doc-volume LOCAL
.
.
.\" NS doc-section global string
.\" NS   the manual section
.
.ds doc-section Null
.
.
.\" NS Dt user macro (not parsed, not callable)
.\" NS   document title
.\" NS
.\" NS modifies:
.\" NS   doc-document-title
.\" NS   doc-section
.\" NS   doc-volume
.\" NS
.\" NS local variables:
.\" NS   doc-volume-as-XXX
.\" NS   doc-volume-ds-XXX
.\" NS
.\" NS width register `Dt' set above
.
.\" an alternative, more detailed scheme for naming the manual sections
.\"
.ds doc-volume-operating-system BSD
.nr doc-volume-operating-system-ateol 0
.ds doc-volume-ds-1 General Commands Manual
.ds doc-volume-ds-2 System Calls Manual
.ds doc-volume-ds-3 Library Functions Manual
.ds doc-volume-ds-4 Kernel Interfaces Manual
.ds doc-volume-ds-5 File Formats Manual
.ds doc-volume-ds-6 Games Manual
.ds doc-volume-ds-7 Miscellaneous Information Manual
.ds doc-volume-ds-8 System Manager's Manual
.ds doc-volume-ds-9 Kernel Developer's Manual
.
.ds doc-volume-ds-USD   User's Supplementary Documents
.ds doc-volume-ds-PS1   Programmer's Supplementary Documents
.ds doc-volume-ds-AMD   Ancestral Manual Documents
.ds doc-volume-ds-SMM   System Manager's Manual
.ds doc-volume-ds-URM   User's Reference Manual
.ds doc-volume-ds-PRM   Programmer's Manual
.ds doc-volume-ds-KM    Kernel Manual
.ds doc-volume-ds-IND   Manual Master Index
.ds doc-volume-ds-LOCAL Local Manual
.ds doc-volume-ds-CON   Contributed Software Manual
.
.als doc-volume-ds-MMI doc-volume-ds-IND
.als doc-volume-ds-LOC doc-volume-ds-LOCAL
.
.ds doc-volume-as-alpha        alpha
.als doc-volume-as-Alpha doc-volume-as-alpha
.ds doc-volume-as-acorn26      acorn26
.ds doc-volume-as-acorn32      acorn32
.ds doc-volume-as-algor        algor
.ds doc-volume-as-amd64        amd64
.ds doc-volume-as-amiga        amiga
.ds doc-volume-as-arc          arc
.ds doc-volume-as-arm26        arm26
.ds doc-volume-as-arm32        arm32
.ds doc-volume-as-atari        atari
.ds doc-volume-as-bebox        bebox
.ds doc-volume-as-cats         cats
.ds doc-volume-as-cesfic       cesfic
.ds doc-volume-as-cobalt       cobalt
.ds doc-volume-as-dreamcast    dreamcast
.ds doc-volume-as-evbarm       evbarm
.ds doc-volume-as-evbmips      evbmips
.ds doc-volume-as-evbppc       evbppc
.ds doc-volume-as-evbsh3       evbsh3
.ds doc-volume-as-hp300        hp300
.ds doc-volume-as-hpcarm       hpcarm
.ds doc-volume-as-hpcmips      hpcmips
.ds doc-volume-as-hpcsh        hpcsh
.ds doc-volume-as-hppa         hppa
.ds doc-volume-as-i386         i386
.ds doc-volume-as-luna68k      luna68k
.ds doc-volume-as-m68k         m68k
.ds doc-volume-as-mac68k       mac68k
.ds doc-volume-as-macppc       macppc
.ds doc-volume-as-mips         mips
.ds doc-volume-as-mipsco       mipsco
.ds doc-volume-as-mmeye        mmeye
.ds doc-volume-as-mvme68k      mvme68k
.ds doc-volume-as-mvmeppc      mvmeppc
.ds doc-volume-as-netwinder    netwinder
.ds doc-volume-as-news68k      news68k
.ds doc-volume-as-newsmips     newsmips
.ds doc-volume-as-next68k      next68k
.ds doc-volume-as-ofppc        ofppc
.ds doc-volume-as-pc532        pc532
.ds doc-volume-as-playstation2 playstation2
.ds doc-volume-as-pmax         pmax
.ds doc-volume-as-pmppc        pmppc
.ds doc-volume-as-powerpc      powerpc
.ds doc-volume-as-prep         prep
.ds doc-volume-as-sandpoint    sandpoint
.ds doc-volume-as-sbmips       sbmips
.ds doc-volume-as-sgimips      sgimips
.ds doc-volume-as-sh3          sh3
.ds doc-volume-as-shark        shark
.ds doc-volume-as-sparc        sparc
.ds doc-volume-as-sparc64      sparc64
.ds doc-volume-as-sun2         sun2
.ds doc-volume-as-sun3         sun3
.ds doc-volume-as-tahoe        tahoe
.ds doc-volume-as-vax          vax
.ds doc-volume-as-x68k         x68k
.ds doc-volume-as-x86_64       x86_64
.
.de Dt
.  \" reset default arguments
.  ds doc-document-title UNTITLED
.  ds doc-volume LOCAL
.  ds doc-section Null
.
.  if !"\$1"" \
.    ds doc-document-title "\$1
.
.  if !"\$2"" \{\
.    ds doc-section \$2
.    ie \B\$2 \{\
.      if ((\$2 >= 1) & (\$2 <= 9)) \{\
.        ie \n[doc-volume-operating-system-ateol] \{\
.          ds doc-volume "\*[doc-volume-ds-\$2] \*[doc-volume-operating-system]
.          if \A\$3 \{\
.            if d doc-volume-as-\$3 \
.              as doc-volume "/\*[doc-volume-as-\$3]
.        \}\}
.        el \{\
.          ds doc-volume "\*[doc-volume-operating-system]
.          if \A\$3 \{\
.            if d doc-volume-as-\$3 \
.              as doc-volume "/\*[doc-volume-as-\$3]
.          \}
.          as doc-volume " \*[doc-volume-ds-\$2]
.    \}\}\}
.    el \{\
.      ie "\$2"unass" \
.        ds doc-volume DRAFT
.      el \{ .ie "\$2"draft" \
.        ds doc-volume DRAFT
.      el .if "\$2"paper" \
.        ds doc-volume UNTITLED
.      \}\}
.      if \A\$3 \{\
.        if d doc-volume-ds-\$3 \
.          ds doc-volume "\*[doc-volume-ds-\$3]
.  \}\}\}
.
.  if !"\$3"" \
.    if "\*[doc-volume]"LOCAL" \
.      ds doc-volume \$3
..
.
.
.\" NS doc-default-operating-system global string
.\" NS   the exact (default) version of the operating system
.\" NS
.\" NS override this in `mdoc.local', if necessary
.
.ds doc-default-operating-system BSD
.
.
.\" NS doc-operating-system global string
.\" NS   the exact version of the operating system
.
.ds doc-operating-system
.
.
.\" NS Os user macro (not parsed, not callable)
.\" NS   operating system
.\" NS
.\" NS modifies:
.\" NS   doc-operating-system
.\" NS
.\" NS local variables:
.\" NS   doc-operating-system-XXX-XXX
.\" NS
.\" NS width register `Os' set above
.
.ds doc-operating-system-ATT-7   7th\~Edition
.als doc-operating-system-ATT-7th doc-operating-system-ATT-7
.ds doc-operating-system-ATT-3   System\~III
.als doc-operating-system-ATT-III doc-operating-system-ATT-3
.ds doc-operating-system-ATT-V   System\~V
.ds doc-operating-system-ATT-V.2 System\~V Release\~2
.ds doc-operating-system-ATT-V.3 System\~V Release\~3
.ds doc-operating-system-ATT-V.4 System\~V Release\~4
.
.ds doc-operating-system-BSD-3    3rd\~Berkeley Distribution
.ds doc-operating-system-BSD-4    4th\~Berkeley Distribution
.ds doc-operating-system-BSD-4.1  4.1\~Berkeley Distribution
.ds doc-operating-system-BSD-4.2  4.2\~Berkeley Distribution
.ds doc-operating-system-BSD-4.3  4.3\~Berkeley Distribution
.ds doc-operating-system-BSD-4.3T 4.3-Tahoe Berkeley Distribution
.ds doc-operating-system-BSD-4.3R 4.3-Reno Berkeley Distribution
.als doc-operating-system-BSD-4.3t doc-operating-system-BSD-4.3T
.als doc-operating-system-BSD-4.3r doc-operating-system-BSD-4.3R
.ds doc-operating-system-BSD-4.4  4.4BSD
.
.ds doc-operating-system-NetBSD-0.8   0.8
.ds doc-operating-system-NetBSD-0.8a  0.8A
.ds doc-operating-system-NetBSD-0.9   0.9
.ds doc-operating-system-NetBSD-0.9a  0.9A
.ds doc-operating-system-NetBSD-1.0   1.0
.ds doc-operating-system-NetBSD-1.0a  1.0A
.ds doc-operating-system-NetBSD-1.1   1.1
.ds doc-operating-system-NetBSD-1.2   1.2
.ds doc-operating-system-NetBSD-1.2a  1.2A
.ds doc-operating-system-NetBSD-1.2b  1.2B
.ds doc-operating-system-NetBSD-1.2c  1.2C
.ds doc-operating-system-NetBSD-1.2d  1.2D
.ds doc-operating-system-NetBSD-1.2e  1.2E
.ds doc-operating-system-NetBSD-1.3   1.3
.ds doc-operating-system-NetBSD-1.3a  1.3A
.ds doc-operating-system-NetBSD-1.4   1.4
.ds doc-operating-system-NetBSD-1.4.1 1.4.1
.ds doc-operating-system-NetBSD-1.4.2 1.4.2
.ds doc-operating-system-NetBSD-1.4.3 1.4.3
.ds doc-operating-system-NetBSD-1.5   1.5
.ds doc-operating-system-NetBSD-1.5.1 1.5.1
.ds doc-operating-system-NetBSD-1.5.2 1.5.2
.ds doc-operating-system-NetBSD-1.5.3 1.5.3
.ds doc-operating-system-NetBSD-1.6   1.6
.ds doc-operating-system-NetBSD-1.6.1 1.6.1
.ds doc-operating-system-NetBSD-1.6.2 1.6.2
.ds doc-operating-system-NetBSD-2.0   2.0
.ds doc-operating-system-NetBSD-2.0.1 2.0.1
.ds doc-operating-system-NetBSD-2.0.2 2.0.2
.ds doc-operating-system-NetBSD-2.1   2.1
.
.ds doc-operating-system-FreeBSD-1.0     1.0
.ds doc-operating-system-FreeBSD-1.1     1.1
.ds doc-operating-system-FreeBSD-1.1.5   1.1.5
.ds doc-operating-system-FreeBSD-1.1.5.1 1.1.5.1
.ds doc-operating-system-FreeBSD-2.0     2.0
.ds doc-operating-system-FreeBSD-2.0.5   2.0.5
.ds doc-operating-system-FreeBSD-2.1     2.1
.ds doc-operating-system-FreeBSD-2.1.5   2.1.5
.ds doc-operating-system-FreeBSD-2.1.6   2.1.6
.ds doc-operating-system-FreeBSD-2.1.7   2.1.7
.ds doc-operating-system-FreeBSD-2.2     2.2
.ds doc-operating-system-FreeBSD-2.2.1   2.2.1
.ds doc-operating-system-FreeBSD-2.2.2   2.2.2
.ds doc-operating-system-FreeBSD-2.2.5   2.2.5
.ds doc-operating-system-FreeBSD-2.2.6   2.2.6
.ds doc-operating-system-FreeBSD-2.2.7   2.2.7
.ds doc-operating-system-FreeBSD-2.2.8   2.2.8
.ds doc-operating-system-FreeBSD-3.0     3.0
.ds doc-operating-system-FreeBSD-3.1     3.1
.ds doc-operating-system-FreeBSD-3.2     3.2
.ds doc-operating-system-FreeBSD-3.3     3.3
.ds doc-operating-system-FreeBSD-3.4     3.4
.ds doc-operating-system-FreeBSD-3.5     3.5
.ds doc-operating-system-FreeBSD-4.0     4.0
.ds doc-operating-system-FreeBSD-4.1     4.1
.ds doc-operating-system-FreeBSD-4.1.1   4.1.1
.ds doc-operating-system-FreeBSD-4.2     4.2
.ds doc-operating-system-FreeBSD-4.3     4.3
.ds doc-operating-system-FreeBSD-4.4     4.4
.ds doc-operating-system-FreeBSD-4.5     4.5
.ds doc-operating-system-FreeBSD-4.6     4.6
.ds doc-operating-system-FreeBSD-4.6.2   4.6.2
.ds doc-operating-system-FreeBSD-4.7     4.7
.ds doc-operating-system-FreeBSD-4.8     4.8
.ds doc-operating-system-FreeBSD-4.9     4.9
.ds doc-operating-system-FreeBSD-4.10    4.10
.ds doc-operating-system-FreeBSD-5.0     5.0
.ds doc-operating-system-FreeBSD-5.1     5.1
.ds doc-operating-system-FreeBSD-5.2     5.2
.ds doc-operating-system-FreeBSD-5.2.1   5.2.1
.ds doc-operating-system-FreeBSD-5.3     5.3
.
.de Os
.  ie "\$1"" \
.    ds doc-operating-system "\*[doc-default-operating-system]
.  el \{ .ie "\$1"ATT" \{\
.    ds doc-operating-system AT&T
.    if \A\$2 \{\
.      ie d doc-operating-system-ATT-\$2 \
.        as doc-operating-system " \*[doc-operating-system-ATT-\$2]
.      el \
.        as doc-operating-system " UNIX
.  \}\}
.  el \{ .ie "\$1"BSD" \{\
.    if \A\$2 \{\
.      ie d doc-operating-system-BSD-\$2 \
.        ds doc-operating-system "\*[doc-operating-system-BSD-\$2]
.      el \
.        tm mdoc warning: .Os: Unknown BSD version `\$2' (#\n[.c])
.  \}\}
.  el \{ .ie "\$1"FreeBSD" \{\
.    ds doc-operating-system FreeBSD
.    if \A\$2 \{\
.      ie d doc-operating-system-FreeBSD-\$2 \
.        as doc-operating-system \~\*[doc-operating-system-FreeBSD-\$2]
.      el \
.        tm mdoc warning: .Os: Unknown FreeBSD version `\$2' (#\n[.c])
.  \}\}
.  el \{ .ie "\$1"NetBSD" \{\
.    ds doc-operating-system NetBSD
.    if \A\$2 \{\
.      ie d doc-operating-system-NetBSD-\$2 \
.        as doc-operating-system \~\*[doc-operating-system-NetBSD-\$2]
.      el \
.        tm mdoc warning: .Os: Unknown NetBSD version `\$2' (#\n[.c])
.  \}\}
.  el \{\
.    ds doc-operating-system \$1
.    if !"\$2"" \
.      as doc-operating-system " \$2
.  \}\}\}\}\}
..
.
.
.\" NS doc-date-string global string
.\" NS   the manual page date as set by `Dd'
.
.ds doc-date-string
.
.
.\" NS Dd user macro (not parsed, not callable)
.\" NS   set document date
.\" NS
.\" NS modifies:
.\" NS   doc-date-string
.\" NS
.\" NS local variables:
.\" NS   doc-date-XXX
.\" NS
.\" NS width register `Dd' set above
.
.ds doc-date-1  January
.ds doc-date-2  February
.ds doc-date-3  March
.ds doc-date-4  April
.ds doc-date-5  May
.ds doc-date-6  June
.ds doc-date-7  July
.ds doc-date-8  August
.ds doc-date-9  September
.ds doc-date-10 October
.ds doc-date-11 November
.ds doc-date-12 December
.
.de Dd
.  ie \n[.$] \{\
.    ie (\n[.$] == 3) \
.      ds doc-date-string \$1\~\$2 \$3
.    el \{\
.      ds doc-date-string "\*[doc-date-\n[mo]]
.      as doc-date-string \~\n[dy], \n[year]
.    \}
.  \}
.  el \
.    ds doc-date-string Epoch
..
.
.
.\" NS doc-hyphen-flags global register
.\" NS   the parameter for the `.hy' request
.\" NS
.\" NS override this in `mdoc.local', if necessary.
.
.nr doc-hyphen-flags 12
.
.
.\" NS doc-header macro
.\" NS   print page header
.\" NS
.\" NS local variables:
.\" NS   doc-reg-dh
.\" NS   doc-reg-dh1
.
.de doc-header
.  ev doc-env-dh
.  doc-setup-page-layout
.  if !\n[cR] \
.    sp \n[doc-header-space]u
.  nr doc-reg-dh \w'\*[doc-caption-font]\*[doc-header-string]\f[]'
.  nr doc-reg-dh1 \w'\*[doc-caption-font2]\*[doc-volume]\f[]'
.  if (\n[doc-reg-dh] + \n[doc-reg-dh1] + \n[doc-reg-dh] >= \n[.lt]) \{\
.    while (\n[doc-reg-dh] + \n[doc-reg-dh1] + \n[doc-reg-dh] >= \n[.lt]) \{\
.      substring doc-header-string 0 -2
.      nr doc-reg-dh \w'\*[doc-caption-font]\*[doc-header-string]\|.\|.\|.\f[]'
.    \}
.    as doc-header-string "\|.\|.\|.
.  \}
.  tl \*[doc-caption-font]\*[doc-header-string]\f[]\*[doc-caption-font2]\*[doc-volume]\f[]\*[doc-caption-font]\*[doc-header-string]\f[]
.  ie !\n[cR] \
.    sp \n[doc-header-space]u
.  el \
.    sp 1v
.  ev
.  ns
..
.
.
.\" NS doc-footer macro
.\" NS   print page footer
.
.de doc-footer
.  ie \n[cR] \
.    br
.  el \{\
.    ev doc-caption-enviroment
.    doc-setup-page-layout
.    sp \n[doc-footer-space]u
.    ie \n[D] \{\
.      ie o \
.        tl %\*[doc-caption-font2]\*[doc-date-string]\f[]\*[doc-caption-font]\*[doc-operating-system]\f[]
.      el \
.        tl \*[doc-caption-font]\*[doc-operating-system]\f[]\*[doc-caption-font2]\*[doc-date-string]\f[]%
.    \}
.    el \
.      tl \*[doc-caption-font]\*[doc-operating-system]\f[]\*[doc-caption-font2]\*[doc-date-string]\f[]%
.    bp
.    ev
.  \}
..
.
.
.\" NS doc-check-depth macro
.\" NS   check paired macros
.
.de doc-check-depth
.  if \n[doc-list-depth] \{\
.    tm mdoc warning: A .Bl directive has no matching .El (#\n[.c])
.    nr doc-list-depth 0
.  \}
.  if \n[doc-display-depth] \{\
.    tm mdoc warning: A .Bd directive has no matching .Ed (#\n[.c])
.    nr doc-display-depth 0
.  \}
.  if \n[doc-fontmode-depth] \{\
.    tm mdoc warning: A .Bf directive has no matching .Ef (#\n[.c])
.    nr doc-fontmode-depth 0
.  \}
..
.
.
.\" NS doc-end-macro macro
.\" NS   finish output
.
.de doc-end-macro
.  \" We may still have a partial line in the environment.  If this is the
.  \" case, and we happen to be on the last line of the page, the `.fl'
.  \" request will cause the page to be ejected and troff will immediately
.  \" exit.  If we are in nroff mode, this would be unfortunate, since we
.  \" would never get a chance to output the footer.  So we fudge the page
.  \" length to make sure that the last page is never ejected until we want
.  \" it to be.
.
.  if \n[cR] \
.    pl +3v
.  fl
.
.  doc-check-depth
.
.  if \n[cR] \{\
.    sp
.    tl \*[doc-caption-font]\*[doc-operating-system]\f[]\*[doc-caption-font2]\*[doc-date-string]\f[]\*[doc-caption-font]\*[doc-operating-system]\f[]
.    \" suppress empty lines after the footer
.    pl \n[nl]u
.  \}
..
.
.
.\" NS doc-paragraph macro
.\" NS   insert a paragraph
.
.de doc-paragraph
.  sp \n[doc-paragraph-space]u
.  if !\n[cR] \
.    ne 2
.  ns
..
.
.
.\" NS Pp user macro (not parsed, not callable)
.\" NS   new paragraph
.\" NS
.\" NS width register `Pp' set above
.
.als Pp doc-paragraph
.
.
.\" NS Lp user macro (not parsed, not callable)
.\" NS   same as .Pp
.\" NS
.\" NS width register `Lp' set above
.
.als Lp doc-paragraph
.
.
.de LP
.  tm Not a \-mdoc command: .LP (#\n[.c])
..
.
.
.de PP
.  tm Not a \-mdoc command: .PP (#\n[.c])
..
.
.
.de pp
.  tm Not a \-mdoc command: .pp (#\n[.c])
..
.
.
.de SH
.  tm Not a \-mdoc command: .SH (#\n[.c])
..
.
.
.\" NS Nd user macro (not parsed, not callable)
.\" NS   print name description
.\" NS
.\" NS width register `Nd' set above
.
.de Nd
.  nop \[em] \$*
..
.
.
.\" NS doc-in-synopsis-section global register (bool)
.\" NS   whether we are in the `synopsis' section
.
.nr doc-in-synopsis-section 0
.
.
.\" NS doc-in-library-section global register (bool)
.\" NS   whether we are in the `library' section
.
.nr doc-in-library-section 0
.
.
.\" NS doc-in-see-also-section global register (bool)
.\" NS   whether we are in the `see also' section
.
.nr doc-in-see-also-section 0
.
.
.\" NS doc-in-files-section global register (bool)
.\" NS   whether we are in the `files' section
.
.nr doc-in-files-section 0
.
.
.\" NS doc-in-authors-section global register (bool)
.\" NS   whether we are in the `authors' section
.
.nr doc-in-authors-section 0
.
.
.\" NS doc-first-parameter macro
.\" NS   return first parameter
.\" NS
.\" NS local variables:
.\" NS   doc-str-dfp
.
.de doc-first-parameter
.  ds doc-str-dfp "\$1
..
.
.
.\" NS Sh user macro (not callable)
.\" NS   section headers
.\" NS
.\" NS modifies:
.\" NS   doc-func-args-processed
.\" NS   doc-func-count
.\" NS   doc-in-authors-section
.\" NS   doc-in-files-section
.\" NS   doc-in-library-section
.\" NS   doc-in-see-also-section
.\" NS   doc-in-synopsis-section
.\" NS   doc-indent-synopsis
.\" NS   doc-indent-synopsis-active
.\" NS   doc-is-func
.\" NS   doc-num-func-args
.\" NS
.\" NS local variables:
.\" NS   doc-reg-Sh
.\" NS   doc-reg-Sh1
.\" NS   doc-section-XXX
.\" NS
.\" NS width register `Sh' set in doc-common
.
.ds doc-section-name        NAME
.ds doc-section-synopsis    SYNOPSIS
.ds doc-section-library     LIBRARY
.ds doc-section-description DESCRIPTION
.ds doc-section-see-also    SEE
.ds doc-section-files       FILES
.ds doc-section-authors     AUTHORS
.
.de Sh
.  ie \n[doc-arg-limit] \{\
.    \" we only allow `Sh' within `Sh'; it will change the font back to
.    \" `doc-Sh-font'
.    ie "\*[doc-macro-name]"Sh" \{\
.      nr doc-arg-ptr +1
.      ie (\n[doc-arg-limit] >= \n[doc-arg-ptr]) \{\
.        nr doc-curr-font \n[.f]
.        nr doc-curr-size \n[.ps]
.        nop \*[doc-Sh-font]\c
.        doc-print-recursive
.      \}
.      el \{\
.        tm Usage: .Sh section_name ... (#\n[.c])
.        doc-reset-args
.    \}\}
.    el \{\
.      tm Usage: .Sh not callable by other macros (#\n[.c])
.      doc-reset-args
.  \}\}
.  el \{\
.    if !\n[.$] \{\
.      tm Usage: .Sh section_name ... (#\n[.c])
.      return
.    \}
.
.    ds doc-macro-name Sh
.    doc-parse-args \$@
.
.    if t \
.      ad
.
.    \" this resolves e.g. `.Sh "SEE ALSO"'
.    doc-first-parameter \$*
.
.    ie "\*[doc-str-dfp]"\*[doc-section-name]" \{\
.      doc-setup-header
.      in 0
.    \}
.    el \{\
.      nr doc-in-synopsis-section 0
.      nr doc-in-library-section 0
.      nr doc-in-see-also-section 0
.      nr doc-in-files-section 0
.      nr doc-in-authors-section 0
.
.      ie        "\*[doc-str-dfp]"\*[doc-section-synopsis]" \{\
.        if t \
.          na
.        nr doc-in-synopsis-section 1
.        nr doc-indent-synopsis 0
.        nr doc-indent-synopsis-active 0
.      \}
.      el \{ .ie "\*[doc-str-dfp]"\*[doc-section-library]" \{\
.        nr doc-in-library-section 1
.      \}
.      el \{ .ie "\*[doc-str-dfp]"\*[doc-section-description]" \{\
.        nr doc-is-func 0
.        nr doc-func-count 0
.        nr doc-func-args-processed 0
.        nr doc-num-func-args 0
.      \}
.      el \{ .ie "\*[doc-str-dfp]"\*[doc-section-see-also]" \{\
.        if t \
.          na
.        nr doc-in-see-also-section 1
.      \}
.      el \{ .ie "\*[doc-str-dfp]"\*[doc-section-files]" \
.        nr doc-in-files-section 1
.      el .if    "\*[doc-str-dfp]"\*[doc-section-authors]" \
.        nr doc-in-authors-section 1
.      \}\}\}\}
.
.      in 0
.      nr doc-have-author 0
.    \}
.
.    doc-setup-page-layout
.    sp
.    ns
.    ta T .5i
.    if !\n[cR] \
.      ne 3
.    fi
.
.    if t \{\
.      nr doc-reg-Sh \n[.ss]
.      nr doc-reg-Sh1 \n[.sss]
.      ss (\n[.ss] * 5 / 3) (\n[.sss] * 5 / 3)
.    \}
.
.    nr doc-arg-ptr +1
.    nr doc-curr-font \n[.f]
.    nr doc-curr-size \n[.ps]
.    nop \*[doc-Sh-font]\c
.    doc-print-recursive
.
.    if t \
.      ss \n[doc-reg-Sh] \n[doc-reg-Sh1]
.
.    in +\n[doc-subheader-indent]u
.    ns
.
.    doc-check-depth
.  \}
..
.
.
.\" NS Ss user macro (not callable)
.\" NS   subsection
.\" NS
.\" NS local variable:
.\" NS   doc-reg-Ss
.\" NS   doc-reg-Ss1
.\" NS
.\" NS width register `Ss' set above
.
.de Ss
.  ie \n[doc-arg-limit] \{\
.    \" we only allow `Ss' within `Ss'; it will change the font back to
.    \" `doc-Sh-font'
.    ie "\*[doc-macro-name]"Ss" \{\
.      nr doc-arg-ptr +1
.      ie (\n[doc-arg-limit] >= \n[doc-arg-ptr]) \{\
.        nr doc-curr-font \n[.f]
.        nr doc-curr-size \n[.ps]
.        nop \*[doc-Sh-font]\c
.        doc-print-recursive
.      \}
.      el \{\
.        tm Usage: .Ss subsection_name ... (#\n[.c])
.        doc-reset-args
.    \}\}
.    el \{\
.      tm Usage: .Ss not callable by other macros (#\n[.c])
.      doc-reset-args
.  \}\}
.  el \{\
.    if !\n[.$] \{\
.      tm Usage: .Ss subsection_name ... (#\n[.c])
.      return
.    \}
.
.    ds doc-macro-name Ss
.    doc-parse-args \$@
.
.    sp
.    if !\n[cR] \
.      ne 3
.    ti -.25i
.
.    nr doc-reg-Ss \n[.ss]
.    nr doc-reg-Ss1 \n[.sss]
.    ss (\n[.ss] * 5 / 4) (\n[.sss] * 5 / 4)
.
.    nr doc-arg-ptr +1
.    nr doc-curr-font \n[.f]
.    nr doc-curr-size \n[.ps]
.    nop \*[doc-Sh-font]\c
.    doc-print-recursive
.
.    ss \n[doc-reg-Ss] \n[doc-reg-Ss1]
.
.    ta T .5i
.    if !\n[cR] \
.      ne 2
.    br
.    ns
.
.    doc-check-depth
.  \}
..
.
.
.\" NS Rd macro (not parsed, not callable)
.\" NS   print global register dump to stderr
.\" NS
.\" NS local variables:
.\" NS   doc-reg-Rd
.
.de Rd
.  tm MDOC GLOBAL REGISTER DUMP
.  tm doc-macro-name == `\*[doc-macro-name]'
.  tm doc-arg-limit == \n[doc-arg-limit]
.  tm doc-num-args == \n[doc-num-args]
.  tm doc-arg-ptr == \n[doc-arg-ptr]
.
.  nr doc-reg-Rd 1
.  while (\n[doc-reg-Rd] <= \n[doc-arg-limit]) \{\
.    tm doc-arg\n[doc-reg-Rd] == `\*[doc-arg\n[doc-reg-Rd]]'
.    tm doc-type\n[doc-reg-Rd] == \n[doc-type\n[doc-reg-Rd]]
.    tm doc-space\n[doc-reg-Rd] == `\*[doc-space\n[doc-reg-Rd]]'
.    nr doc-reg-Rd +1
.  \}
.
.  tm doc-curr-font == \n[doc-curr-font]
.  tm doc-curr-size == \n[doc-curr-size]
.  tm doc-indent-synopsis == \n[doc-indent-synopsis]
.  tm doc-indent-synopsis-active == \n[doc-indent-synopsis-active]
.  tm doc-have-decl == \n[doc-have-decl]
.  tm doc-have-var == \n[doc-have-var]
.  tm doc-command-name == `\*[doc-command-name]'
.  tm doc-quote-left == `\*[doc-quote-left]'
.  tm doc-quote-right == `\*[doc-quote-right]'
.  tm doc-nesting-level == \n[doc-nesting-level]
.  tm doc-in-list == \n[doc-in-list]
.  tm doc-space == `\*[doc-space]'
.  tm doc-saved-space == `\*[doc-saved-space]'
.  tm doc-space-mode == \n[doc-space-mode]
.  tm doc-have-space == \n[doc-have-space]
.  tm doc-have-slot == \n[doc-have-slot]
.  tm doc-keep-type == \n[doc-keep-type]
.  tm doc-display-depth == \n[doc-display-depth]
.  tm doc-is-compact == \n[doc-is-compact]
.
.  nr doc-reg-Rd 0
.  while (\n[doc-reg-Rd] <= \n[doc-display-depth]) \{\
.    tm doc-display-type-stack\n[doc-reg-Rd] == `\*[doc-display-type-stack\n[doc-reg-Rd]]'
.    tm doc-display-indent-stack\n[doc-reg-Rd] == \n[doc-display-indent-stack\n[doc-reg-Rd]]
.    tm doc-display-ad-stack\n[doc-reg-Rd] == \n[doc-display-ad-stack\n[doc-reg-Rd]]
.    tm doc-display-fi-stack\n[doc-reg-Rd] == \n[doc-display-fi-stack\n[doc-reg-Rd]]
.    tm doc-display-ft-stack\n[doc-reg-Rd] == \n[doc-display-ft-stack\n[doc-reg-Rd]]
.    tm doc-display-ps-stack\n[doc-reg-Rd] == \n[doc-display-ps-stack\n[doc-reg-Rd]]
.    nr doc-reg-Rd +1
.  \}
.
.  tm doc-fontmode-depth == \n[doc-fontmode-depth]
.
.  nr doc-reg-Rd 1
.  while (\n[doc-reg-Rd] <= \n[doc-fontmode-depth]) \{\
.    tm doc-fontmode-font-stack\n[doc-reg-Rd] == `\n[doc-fontmode-font-stack\n[doc-reg-Rd]]'
.    tm doc-fontmode-size-stack\n[doc-reg-Rd] == `\n[doc-fontmode-size-stack\n[doc-reg-Rd]]'
.    nr doc-reg-Rd +1
.  \}
.
.  tm doc-list-depth == \n[doc-list-depth]
.
.  nr doc-reg-Rd 1
.  while (\n[doc-reg-Rd] <= \n[doc-list-depth]) \{\
.    tm doc-list-type-stack\n[doc-reg-Rd] == `\*[doc-list-type-stack\n[doc-reg-Rd]]'
.    tm doc-list-have-indent-stack\n[doc-reg-Rd] == \n[doc-list-have-indent-stack\n[doc-reg-Rd]]
.    tm doc-list-indent-stack\n[doc-reg-Rd] == \n[doc-list-indent-stack\n[doc-reg-Rd]]
.    tm doc-compact-list-stack\n[doc-reg-Rd] == \n[doc-compact-list-stack\n[doc-reg-Rd]]
.    tm doc-tag-prefix-stack\n[doc-reg-Rd] == `\*[doc-tag-prefix-stack\n[doc-reg-Rd]]'
.    tm doc-tag-width-stack\n[doc-reg-Rd] == `\*[doc-tag-width-stack\n[doc-reg-Rd]]'
.    tm doc-list-offset-stack\n[doc-reg-Rd] == \n[doc-list-offset-stack\n[doc-reg-Rd]]
.    tm doc-enum-list-count-stack\n[doc-reg-Rd] == \n[doc-enum-list-count-stack\n[doc-reg-Rd]]
.    nr doc-reg-Rd +1
.  \}
.
.  tm doc-saved-Pa-font == `\*[doc-saved-Pa-font]'
.  tm doc-curr-type == \n[doc-curr-type]
.  tm doc-curr-arg == `\*[doc-curr-arg]'
.  tm doc-diag-list-input-line-count == \n[doc-diag-list-input-line-count]
.  tm doc-num-columns == \n[doc-num-columns]
.  tm doc-column-indent-width == \n[doc-column-indent-width]
.  tm doc-is-func == \n[doc-is-func]
.  tm doc-have-old-func == \n[doc-have-old-func]
.  tm doc-func-arg-count == \n[doc-func-arg-count]
.  tm doc-func-arg == `\*[doc-func-arg]'
.  tm doc-num-func-args == \n[doc-num-func-args]
.  tm doc-func-args-processed == \n[doc-func-args-processed]
.  tm doc-have-func == \n[doc-have-func]
.  tm doc-is-reference == \n[doc-is-reference]
.  tm doc-reference-count == \n[doc-reference-count]
.  tm doc-author-count == \n[doc-author-count]
.
.  nr doc-reg-Rd 0
.  while (\n[doc-reg-Rd] <= \n[doc-author-count]) \{\
.    tm doc-author-name\n[doc-reg-Rd] == `\*[doc-author-name\n[doc-reg-Rd]]'
.    nr doc-reg-Rd +1
.  \}
.
.  tm doc-book-count == \n[doc-book-count]
.  tm doc-book-name == `\*[doc-book-name]'
.  tm doc-date-count == \n[doc-date-count]
.  tm doc-date == `\*[doc-date]'
.  tm doc-publisher-count == \n[doc-publisher-count]
.  tm doc-publisher-name == `\*[doc-publisher-name]'
.  tm doc-journal-count == \n[doc-journal-count]
.  tm doc-journal-name == `\*[doc-journal-name]'
.  tm doc-issue-count == \n[doc-issue-count]
.  tm doc-issue-name == `\*[doc-issue-name]'
.  tm doc-optional-count == \n[doc-optional-count]
.  tm doc-optional-string == `\*[doc-optional-string]'
.  tm doc-page-number-count == \n[doc-page-number-count]
.  tm doc-page-number-string == `\*[doc-page-number-string]'
.  tm doc-corporate-count == \n[doc-corporate-count]
.  tm doc-corporate-name == `\*[doc-corporate-name]'
.  tm doc-report-count == \n[doc-report-count]
.  tm doc-report-name == `\*[doc-report-name]'
.  tm doc-reference-title-count == \n[doc-reference-title-count]
.  tm doc-reference-title-name == `\*[doc-reference-title-name]'
.  tm doc-reference-title-name-for-book == `\*[doc-reference-title-name-for-book]'
.  tm doc-url-count == \n[doc-url-count]
.  tm doc-url-name == `\*[doc-url-name]'
.  tm doc-volume-count == \n[doc-volume-count]
.  tm doc-volume-name == `\*[doc-volume-name]'
.  tm doc-have-author == \n[doc-have-author]
.
.  tm doc-document-title == `\*[doc-document-title]'
.  tm doc-volume == `\*[doc-volume]'
.  tm doc-section == `\*[doc-section]'
.  tm doc-operating-system == `\*[doc-operating-system]'
.  tm doc-date-string == `\*[doc-date-string]'
.  tm doc-header-space == \n[doc-header-space]
.  tm doc-footer-space == \n[doc-footer-space]
.  tm doc-display-vertical == \n[doc-display-vertical]
.  tm doc-header-string == `\*[doc-header-string]'
.  tm doc-in-synopsis-section == \n[doc-in-synopsis-section]
.  tm doc-in-library-section == \n[doc-in-library-section]
.  tm doc-in-see-also-section == \n[doc-in-see-also-section]
.  tm doc-in-files-section == \n[doc-in-files-section]
.  tm doc-in-authors-section == \n[doc-in-authors-section]
.
.  tm END OF GLOBAL REGISTER DUMP
..
.
.
.ec
.
.\" EOF