.nr _0 \n(.c
.\"**********************************************************************
.\"*									*
.\"*	******  - M E   N R O F F / T R O F F   M A C R O S  ******	*
.\"*									*
.\"*	Produced for your edification and enjoyment by:			*
.\"*		Eric Allman						*
.\"*		Electronics Research Laboratory				*
.\"*		U.C. Berkeley.						*
.\"*	current address:						*
.\"*		Britton-Lee, Inc.					*
.\"*		1919 Addison Street Suite 105				*
.\"*		Berkeley, California  94704				*
.\"*									*
.\"*	VERSION 2.28	First Release: 11 Sept 1978			*
.\"*	See file \*(||/revisions for revision history			*
.\"*									*
.\"*	Documentation is available.					*
.\"*									*
.\"**********************************************************************
.\"
.\"	@(#)tmac.e	2.28	5/12/86
.\"	%beginstrip%
.\"
.\"	Code on .de commands:
.\"		***	a user interface macro.
.\"		&&&	a user interface macro which is redefined
.\"			when used to be the real thing.
.\"		$$$	a macro which may be redefined by the user
.\"			to provide variant functions.
.\"		---	an internal macro.
.\"
.if !\n(.V .tm You are using the wrong version of NROFF/TROFF!!
.if !\n(.V .tm This macro package works only on the version seven
.if !\n(.V .tm release of NROFF and TROFF.
.if !\n(.V .ex
.if \n(pf \
.	nx \*(||/null.me
.\"		*** INTERNAL GP MACROS ***
.de @C			\" --- change ev's, taking info with us
.nr _S \\n(.s
.nr _V \\n(.v
.nr _F \\n(.f
.nr _I \\n(.i
.ev \\$1
.ps \\n(_S
.vs \\n(_Vu
.ft \\n(_F
'in \\n(_Iu
.xl \\n($lu
.lt \\n($lu
.rr _S
.rr _V
.rr _F
.rr _I
.ls 1
'ce 0
..
.de @D			\" --- determine display type (Indent, Left, Center)
.ds |p "\\$3
.nr _d \\$1
.ie "\\$2"C" \
.	nr _d 1
.el .ie "\\$2"L" \
.	nr _d 2
.el .ie "\\$2"I" \
.	nr _d 3
.el .ie "\\$2"M" \
.	nr _d 4
.el \
.	ds |p "\\$2
..
.de @z			\" --- end macro
.if \n@>1 .tm >> @z, .z=\\n(.z ?a=\\n(?a
.if !"\\n(.z"" \
\{\
.	tm Line \\n(c. -- Unclosed block, footnote, or other diversion (\\n(.z)
.	di
.	ex
.\}
.if \\n(?a \
.	bp			\" force out final table
.rm bp
.rm @b\"			\" don't start another page
.if t \
.	wh -1p @m
.br
.if \n@>1 .tm << @z
..
.de @I			\" --- initialize processor
.rm th
.rm ac
.rm lo
.rm sc
.rm @I
..
.\"		*** STANDARD HEADERS AND FOOTERS ***
.de he			\" *** define header
.ie !\\n(.$ \
\{\
.	rm |4
.	rm |5
.\}
.el \
\{\
.	ds |4 "\\$1 \\$2 \\$3 \\$4 \\$5 \\$6 \\$7 \\$8 \\$9
.	ds |5 "\\$1 \\$2 \\$3 \\$4 \\$5 \\$6 \\$7 \\$8 \\$9
.\}
..
.de eh			\" *** define even header
.ie !\\n(.$ \
.	rm |4
.el \
.	ds |4 "\\$1 \\$2 \\$3 \\$4 \\$5 \\$6 \\$7 \\$8 \\$9
..
.de oh			\" *** define odd header
.ie !\\n(.$ \
.	rm |5
.el \
.	ds |5 "\\$1 \\$2 \\$3 \\$4 \\$5 \\$6 \\$7 \\$8 \\$9
..
.de fo			\" *** define footer
.ie !\\n(.$ \
\{\
.	rm |6
.	rm |7
.\}
.el \
\{\
.	ds |6 "\\$1 \\$2 \\$3 \\$4 \\$5 \\$6 \\$7 \\$8 \\$9
.	ds |7 "\\$1 \\$2 \\$3 \\$4 \\$5 \\$6 \\$7 \\$8 \\$9
.\}
..
.de ef			\" *** define even foot
.ie !\\n(.$ \
.	rm |6
.el \
.	ds |6 "\\$1 \\$2 \\$3 \\$4 \\$5 \\$6 \\$7 \\$8 \\$9
..
.de of			\" *** define odd footer
.ie !\\n(.$ \
.	rm |7
.el \
.	ds |7 "\\$1 \\$2 \\$3 \\$4 \\$5 \\$6 \\$7 \\$8 \\$9
..
.de ep			\" *** end page (must always be followed by a .bp)
.if \\n(nl>0 \
\{\
.	wh 0
.	rs
.	@b
.\}
..
.\"		*** INTERNAL HEADER AND FOOTER MACROS ***
.de @h			\" --- header
.if \n@>1 .tm >> @h %=\\n% ?a=\\n(?a ?b=\\n(?b ?w=\\n(?w
.if (\\n(.i+\\n(.o)>=\\n(.l \
.	tm Line \\n(c. -- Offset + indent exceeds line length
.if t .if (\\n(.l+\\n(.o)>7.75i \
.	tm Line \\n(c. -- Offset + line length exceeds paper width
.\" initialize a pile of junk
.nr ?h \\n(?H			\" transfer "next page" to "this page"
.rr ?H
.nr ?c \\n(?C
.rr ?C
.rn |4 |0
.rn |5 |1
.rn |6 |2
.rn |7 |3
.nr _w 0			\" reset max footnote width
.nr ?W 0			\" no wide floats this page (yet)
.nr ?I 1
.\" begin actual header stuff
.ev 2
.rs
.if t .@m			\" output cut mark
.if \\n(hm>0 \
.	sp |\\n(hmu		\" move to header position
.@t $h				\" output header title
.if \\n(tm<=0 \
.	nr tm \n(.Vu
.sp |\\n(tmu			\" move to top of text
.ev
.mk _k				\" for columned output
.if \\n(?n .nm 1		\" restore line numbering if n1 mode
.nr $c 1			\" set first column
.if \n@>4 .tm -- @h >> .ns nl=\\n(nl %=\\n% _k=\\n(_k tm=\\n(tm
.ie \\n(?s \
\{\
.	rr ?s
.	rs
'	@b
.\}
.el \
.	@n			\" begin the column
.if \n@>2 .tm << @h
..
.if \nv=2 \
\{\
.	de @m		\" --- output cut mark (only on C/A/T-style)
.	@O 0
.	lt 7.5i
.	tl '\(rn''\(rn'
.	@O
.	lt
..
.\}
.de @n			\" --- new column or page
.if \n@>3 .tm >> @n nl=\\n(nl %=\\n% ?f=\\n(?f ?o=\\n(?o
.if \\n(bm<=0 \
.	nr bm \\n(.Vu
.if (\\n(_w<=\\n($l)&(\\n(?W=0) \
\{\
.	nr _b (\\n(ppu*\\n($ru)/2u	\" compute fudge factor (must be < 1P)
.	if \\n(_bu>((\\n(bmu-\\n(fmu-(\\n(tpu*\\n($ru))/2u) \
.		nr _b (\\n(ppu*\\n($ru)-\n(.Vu
.	nr _b +\\n(bmu
.\}
.nr _B \\n(_bu
.ch @f
.wh -\\n(_bu @f
.nr _b +(\\n(ppu*\\n($ru)	\" add 1 paragraph v in case of sweep past
.if \n@>2 .tm @n .p=\\n(.p bm=\\n(bm _b=\\n(_b _B=\\n(_B
.nr ?f 0			\" reset footnote flag
.if \\n(?o \
\{\
.	(f _			\" reprocess footnotes which run off page
.	nf
.	|o
.	fi
.	)f
.	rm |o
.\}
.nr ?o 0
.if \\n(?T \
\{\
.	nr _i \\n(.i
.	in \\n($iu
.	|h			\" output the table header
.	in \\n(_iu
.	rr _i
.	mk #T			\" for tbl commands
.	ns
.\}
.if (\\n(?a)&((\\n($c<2):(\\n(?w=0)) \
\{\
.	nr ?a 0			\" output floating keep
.	@k |t
.	if \\n(?w \
.		mk _k		\" don't overstrike wide keeps
.	nr ?w 0
.\}
.os
.$H				\" special column header macro
.ns
..
.de @f			\" --- footer
.if \n@>1 .tm >> @f %=\\n% nl=\\n(nl ?a=\\n(?a ?b=\\n(?b ?f=\\n(?f
.if \n@>2 .nr VL \\n(.pu-\\n(nlu
.if \n@>2 .tm @f bm=\\n(bm _B=\\n(_B _b=\\n(_b .p-nl=\\n(VL
.ec
.if \\n(?T \
\{\
.	nr T. 1			\" for tbl commands (to output bottom line)
.	T# 1			\" output the sides and bottom lines
.	br
.\}
.ev 2
.ce 0
.if \\n(?b \
\{\
.	nr ?b 0
.	@k |b\"			\" output bottom of page tables
.\}
.if \\n(?f \
.	@o			\" output footnote if present
.ie \\n($c<\\n($m \
.	@c			\" handle new column
.el \
.	@e			\" new page
.ev
.if \n@>2 .tm << @f
..
.de @o			\" --- output footnote
.nf
.ls 1
.in 0
.if \n@>2 .tm @o last printed text = \\n(nl placing @r trap at -\\n(_B
.wh -\\n(_Bu @r
.|f
.fi
.if \n@>2 .tm @o triggered @r (?o) = \\n(?o
.if \\n(?o \
\{\
.	di			\" just in case triggered @r
.	if \\n(dn=0 \
\{\
.		rm |o
.		nr ?o 0
.	\}
.	nr dn \\n(_D
.	rr _D
.\}
.rm |f
.ch @r
..
.de @c			\" --- new column
.if \n@>2 .tm	>> @c %=\\n%
.rs
.sp |\\n(_ku
.@O +\\n($lu+\\n($su
.nr $c +1
.@n
..
.de @e			\" --- end page
.if \n@>2 .tm	>> @e
.@O \\n(_ou
.rs
.sp |\\n(.pu-\\n(fmu-(\\n(tpu*\\n($ru)	\" move to footer position
.@t $f				\" output footer title
.nr ?h 0
.bp
..
.de @t			\" --- output header or footer title
.if !\\n(?h \
\{\
.	sz \\n(tp		\" set header/footer type fonts, etc.
.	@F \\n(tf
.	lt \\n(_Lu		\" make title span entire page
.	nf
.	\\$1
.	br
.\}
..
.de $h			\" $$$ print header
.rm |z
.if !\\n(?c \
\{\
.	if e .ds |z "\\*(|0
.	if o .ds |z "\\*(|1
.\}
.if !\(ts\\*(|z\(ts\(ts \
'	tl \\*(|z
.rm |z
..
.de $f			\" $$$ print footer
.rm |z
.if \\n(?c \
\{\
.	if e .ds |z "\\*(|0
.	if o .ds |z "\\*(|1
.\}
.if \(ts\\*(|z\(ts\(ts \
\{\
.	if e .ds |z "\\*(|2
.	if o .ds |z "\\*(|3
.\}
.if !\(ts\\*(|z\(ts\(ts \
'	tl \\*(|z
.rm |z
..
.de @r			\" --- reprocess overflow footnotes
.if \n@>3 .tm		>> @r .z=\\n(.z ?f=\\n(?f ?a=\\n(?a ?b=\\n(?b _b=\\n(_b
.di |o				\" save overflow footnote
.nr ?o 1
.nr _D \\n(dn
.ns
..
.\"		*** COMMANDS WITH VARIANT DEFINITIONS ***
.rn bp @b		\" --- begin page
.de bp			\" *** begin new page (overrides columns)
.nr $c \\n($m			\" force new page, not new column
.ie \\n(nl>0 \
.	@b \\$1
.el \
\{\
.	if \\n(.$>0 \
.		pn \\$1
.	if \\n(?I \
.		@h		\" 'spring' the header trap
.\}
.br
.wh 0 @h			\" reset header
..
.rn ll xl		\" *** special line length (local)
.de ll			\" *** line length (global to environments)
.xl \\$1
.lt \\$1
.nr $l \\n(.l
.if (\\n($m<=1):(\\n($l>\\n(_L) \
.	nr _L \\n(.l
..
.rn po @O		\" --- local page offset
.de po			\" *** page offset
.@O \\$1
.nr _o \\n(.o
..
.\"		*** MISCELLANEOUS ROFF COMMANDS ***
.de hx			\" *** suppress headers and footers next page
.nr ?H 1
..
.de ix			\" *** indent, no break
'in \\$1
..
.de bl			\" *** contiguous blank lines
.br
.ne \\$1
.rs
.sp \\$1
..
.de n1			\" *** line numbering 1
.nm 1
.xl -\w'0000'u
.nr ?n 1
..
.de n2			\" *** line numbering 2
.nm \\$1
.ie \\n(.$ \
.	xl -\w'0000'u
.el \
.	xl \\n($lu
..
.de pa			\" *** new page
.bp \\$1
..
.de ro			\" *** roman page numbers
.af % i
..
.de ar			\" *** arabic page numbers
.af % 1
..
.de m1			\" *** position one space
.nr _0 \\n(hmu
.nr hm \\$1v
.nr tm +\\n(hmu-\\n(_0u
.rr _0
..
.de m2			\" *** position two space
.nr tm \\n(hmu+\\n(tpp+\\$1v
..
.de m3			\" *** position three space
.nr bm \\n(fmu+\\n(tpp+\\$1v
..
.de m4			\" *** position four space
.nr _0 \\n(fmu
.nr fm \\$1v
.nr bm +\\n(fmu-\\n(_0u
..
.de sk			\" *** leave a blank page (next page)
.if \\n(.$>0 \
.	tm Line \\n(c. -- I cannot skip multiple pages
.nr ?s 1
..
.\"		*** MISCELLANEOUS USER SUPPORT COMMANDS ***
.de re			\" *** reset tabs (TROFF defines 15 stops default)
.ta 0.5i +0.5i +0.5i +0.5i +0.5i +0.5i +0.5i +0.5i +0.5i +0.5i +0.5i +0.5i +0.5i +0.5i +0.5i
..
.if t .ig
.de re			\" *** reset tabs (NROFF version)
.ta 0.8i +0.8i +0.8i +0.8i +0.8i +0.8i +0.8i +0.8i +0.8i +0.8i +0.8i +0.8i +0.8i +0.8i +0.8i
..
.de ba			\" *** set base indent
.ie \\n(.$ \
.	nr $i \\$1n
.el \
.	nr $i \\n(siu*\\n($0u
..
.de hl			\" *** draw horizontal line
.br
\l'\\n(.lu-\\n(.iu'
.sp
..
.\"		*** PARAGRAPHING ***
.de pp			\" *** paragraph
.lp \\n(piu
..
.de lp			\" *** left aligned paragraph
.@p
.if \\n(.$ \
.	ti +\\$1
.nr $p 0 1
..
.de ip			\" *** indented paragraph w/ optional tag
.if (\\n(ii>0)&(\\n(ii<1n) \
.	nr ii \\n(iin
.nr _0 \\n(ii
.if \\n(.$>1 \
.	nr _0 \\$2n
.@p \\n(_0u
.if \\w"\\$1" \
\{\
.	ti -\\n(_0u
.	ie \\w"\\$1">=\\n(_0 \
\{\
\&\\$1
.		br
.	\}
.	el \&\\$1\h'|\\n(_0u'\c
.\}
.rr _0
..
.de np			\" *** numbered paragraph
.if \\n($p<0 \
.	nr $p 0			\" reset number after .bu
.nr $p +1			\" increment paragraph number
.@p \w'\0(000)\0'u
.ti -\w'\0(000)\0'u
\0(\\n($p)\h'|\w'\0(000)\0'u'\c
..
.de bu			\" *** bulleted paragraph
.br
.if \\n($p<0 \
.	ns			\" don't space between .bu paragraphs
.nr $p 0-1			\" mark "bulleted paragraph" mode
.@p \w'\0\(bu\0'u
.ti -\w'\0\(bu\0'u
\0\(bu\0\c
..
.de @p			\" --- initialize for paragraph
.@I				\" initialize macro processor
.if "\\n(.z"|e" .tm Line \\n(c. -- Unmatched continued equation
.in \\n($iu+\\n(pou
.if \\n(.$ \
.	in +\\$1n
.ce 0
.fi
.@F \\n(pf
.sz \\n(pp
.sp \\n(psu
.ne \\n(.Lv+\\n(.Vu
.ns
..
.\"		*** SECTION HEADINGS ***
.de sh			\" &&& section heading
.rn sh @T
.so \\*(||/sh.me
.sh "\\$1" "\\$2" \\$3 \\$4 \\$5 \\$6 \\$7 \\$8
.rm @T
..
.de $p			\" $$$ print section heading
.if (\\n(si>0)&(\\n(.$>2) \
.	nr $i \\$3*\\n(si
.in \\n($iu
.ie !"\\$1\\$2"" \
\{\
.	sp \\n(ssu 		\" one of them is non-null
.	ne \\n(.Lv+\\n(.Vu+\\n(psu+(\\n(spu*\\n($ru*\\n(.Lu)
.	ie \\n(.$>2 \
.		ti -(\\n(siu-\\n(sou)
.	el \
.		ti +\\n(sou
.	@F \\n(sf
.	sz \\n(sp
.	if \\$3>0 \
.		$\\$3
.	if \w"\\$2">0 \\$2.
.	if \w"\\$1">0 \\$1\f1\ \ \&
.\}
.el \
.	sp \\n(psu
.@F \\n(pf
.sz \\n(pp
..
.de uh			\" *** unnumbered section heading
.rn uh @T
.so \\*(||/sh.me
.uh "\\$1"
.rm @T
..
.\"		*** COLUMNNED OUTPUT ***
.de 2c			\" *** double columned output
.br
.if \\n($m>1 \
.	1c			\" revert to 1c if already 2c
.nr $c 1
.nr $m 2
.if \\n(.$>1 \
.	nr $m \\$2
.if \\n(.$>0 \
.	nr $s \\$1n		\" param 1: column seperation
.nr $l (\\n(.l-((\\n($m-1)*\\n($s))/\\n($m
.xl \\n($lu
.mk _k
.ns
..
.de 1c			\" *** single columned output
.br
.nr $c 1
.nr $m 1
.ll \\n(_Lu			\" return to normal output
.sp |\\n(.hu
.@O \\n(_ou
..
.de bc			\" *** begin column
.sp 24i
..
.\"		*** FLOATING TABLES AND NONFLOATING BLOCKS ***
.de (z			\" &&& begin floating keep
.rn (z @V
.so \\*(||/float.me
.(z \\$1 \\$2
.rm @V
..
.de )z			\" &&& end floating keep
.tm Line \\n(c. -- unmatched .)z
..
.de (t			\" XXX temp ref to (z
.(z \\$1 \\$2
..
.de )t			\" XXX temp ref to )t
.)z \\$1 \\$2
..
.de (b			\" *** begin block
.br
.@D 3 \\$1 \\$2
.sp \\n(bsu
.@(
..
.de )b			\" *** end block
.br
.@)
.if (\\n(bt=0):(\\n(.t<\\n(bt) \
.	ne \\n(dnu		\" make it all on one page
.ls 1
.nf
.|k
.ec
.fi
.in 0
.xl \\n($lu
.ev
.rm |k
.sp \\n(bsu+\\n(.Lv-1v
..
.de @(			\" --- begin keep
.if !"\\n(.z"" .tm Line \\n(c. -- Illegal nested keep \\n(.z
.@M
.di |k
\!'rs
..
.de @M			\" --- set modes for display
.nr ?k 1
.@C 1
.@F \\n(df
.vs \\n(.su*\\n($Ru
.nf
.if "\\*(|p"F" \
.	fi			\" set fill mode if "F" parameter
.if \\n(_d=4 \
.	in 0
.if \\n(_d=3 \
\{\
.	in +\\n(biu
.	xl -\\n(biu
.\}
.if \\n(_d=1 \
.	ce 10000
..
.de @)			\" --- end keep
.br
.if !"\\n(.z"|k" .tm Line \\n(c. -- Close of a keep which has never been opened
.nr ?k 0
.di
.in 0
.ce 0
..
.de (c			\" *** begin block centered text
.if "\\n(.z"|c" .tm Line \\n(c. -- Nested .(c requests
.di |c
..
.de )c			\" *** end block centered text
.if !"\\n(.z"|c" .tm Line \\n(c. -- Unmatched .)c
.br				\" force out final line
.di
.if \n@>4 .tm >> .)c .l=\\n(.l .i=\\n(.i $i=\\n($i dl=\\n(dl
.ev 1
.ls 1
.in (\\n(.lu-\\n(.iu-\\n(dlu)/2u
.if \n@>4 .tm -- .)c << .in .l=\\n(.l .i=\\n(.i dl=\\n(dl
.nf
.|c
.ec
.in
.ls
.ev
.rm |c
..
.\"		*** BLOCK QUOTES (OR WHATEVER) AND LISTS ***
.de (q			\" *** begin block quote
.br
.@C 1
.fi
.sp \\n(qsu
.in +\\n(qiu
.xl -\\n(qiu
.sz \\n(qp
..
.de )q			\" *** end block quote
.br
.ev
.sp \\n(qsu+\\n(.Lv-1v
.nr ?k 0
..
.de (l			\" *** begin list
.br
.sp \\n(bsu
.@D 3 \\$1 \\$2
.@M
..
.de )l			\" *** end list
.br
.ev
.sp \\n(bsu+\\n(.Lv-1v
.nr ?k 0
..
.\"		*** PREPROCESSOR SUPPORT ***
.\"
.\"	EQN
.\"
.de EQ			\" &&& begin equation
.rn EQ @T
.so \\*(||/eqn.me
.EQ \\$1 \\$2
.rm @T
..
.\"
.\"	TBL
.\"
.de TS			\" &&& begin table
.rn TS @W
.so \\*(||/tbl.me
.TS \\$1 \\$2
.rm @W
..
.\"
.\"	REFER
.\"
.de ]-			\" &&& initialize reference
.rn ]- @]
.so \\*(||/refer.me
.]-
.rm @]
..
.de ]<			\" &&& initialize reference
.rn ]< @]
.so \\*(||/refer.me
.]<
.rm @]
..
.if n .ds [. " [
.if t .ds [. \s-2\v'-.4m'\f1
.if n .ds .] ]
.if t .ds .] \v'.4m'\s+2\fP
.if n .ds <. "
.if t .ds <. .
.if n .ds >. .
.if t .ds >. "
.\"
.\"	IDEAL
.\"
.de IS			\" *** start ideal picture
.nr g7 \\n(.u
.ls 1
..
.de IF
.if \\n(g7 .fi
.ls
..
.de IE			\" *** end ideal picture
.if \\n(g7 .fi
.ls
..
.\"
.\"	PIC
.\"
.de PS			\" *** start picture: $1=height, $2=width in units
.if t \
.	sp 0.3
.in (\\n(.lu-\\$2u)/2u
.ne \\$1u
.nr g7 \\n(.u
.ls 1
..
.de PE			\" *** end picture
.ls
.in
.if \\n(g7 .fi
.if t .sp .6
..
.\"
.\"	GREMLIN
.\"
.de GS			\" *** start gremlin picture
.nr g7 (\\n(.lu-\\n(g1u)/2u
.if "\\$1"L" .nr g7 \\n(.iu
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