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1 files changed, 1592 insertions, 0 deletions

diff --git a/tmac/tmac.s b/tmac/tmac.s
new file mode 100644
index 00000000..d8e399fd
--- /dev/null
+++ b/tmac/tmac.s
@@ -0,0 +1,1592 @@
+.lg 0
+.ds sd #9/sys/lib/tmac
+.\"	RT -  reset everything to normal state
+.de RT
+.if \\n(CS \{\
+.SR 1
+.BG\}
+.if !\\n(1T .BG
+.ce 0
+.if !\\n(IK .if !\\n(IF .if !\\n(IX .if !\\n(BE .if !\\n(FT .di
+.ul 0
+.if \\n(QP \{\
+.	ll +\\n(QIu
+.	in -\\n(QIu
+.	nr QP -1\}
+.if \\n(NX<=1 .if \\n(AJ=0 .if \\n(FT=0 .ll \\n(LLu
+.if !\\n(IF \{\
+.	ps \\n(PS
+.	ie \\n(VS>=41 .vs \\n(VSu
+.	el .vs \\n(VSp\}
+.ie \\n(IP \{\
+.	in \\n(I\\n(IRu
+.	nr IP -1\}
+.el .if !\\n(IR \{\
+.	nr I1 \\n(PIu
+.	nr I2 0
+.	nr I3 0
+.	nr I4 0
+.	nr I5 0\}
+.ft 1
+.ta 5n 10n 15n 20n 25n 30n 35n 40n 45n 50n 55n 60n 65n 70n 75n 80n
+.hy \\n(HY
+.fi
+..
+.	\"IZ - initialization
+.de IZ
+.so \\*(sd/tmac.sdisp
+.nr TN 0
+.em EM
+. \"  ACCENTS  say \*'e or \*`e to get e acute or e grave both were 4/10
+.ds ' \h'\w'e'u*1/10'\z\(aa\h'-\w'e'u*1/10'
+.ds ` \h'\w'e'u*2/10'\z\(ga\h'-\w'e'u*2/10'
+. \"  UMLAUT  \*:u, etc.
+.if t .ds : \\v'-0.6m'\\h'(1u-(\\\\n(.fu%2u))*0.13m+0.00m'\\z.\\h'0.2m'\\z.\\h'-((1u-(\\\\n(.fu%2u))*0.13m+0.20m)'\\v'0.6m'
+.if n .ds : \z"
+. \" TILDE and CIRCUMFLEX
+.ds ^ \\\\k:\\h'-\\\\n(.fu+1u/2u*2u+\\\\n(.fu-1u*0.13m+0.06m'\\z^\\h'|\\\\n:u'
+.ds ~ \\\\k:\\h'-\\\\n(.fu+1u/2u*2u+\\\\n(.fu-1u*0.13m+0.06m'\\z~\\h'|\\\\n:u'
+.	\" czech v symbol
+.ds v \\\\k:\\\\h'+\\\\w'e'u/4u'\\\\v'-0.6m'\\\\s6v\\\\s0\\\\v'0.6m'\\\\h'|\\\\n:u'
+.		\" cedilla
+.ds , \\\\k:\\\\h'\\\\w'c'u*0.4u'\\\\z,\\\\h'|\\\\n:u'
+.so \\*(sd/tmac.srefs
+.ch FO \\n(YYu
+.if !\\n(FM .nr FM 1i
+.nr YY -\\n(FMu
+.nr XX 0 1
+.nr IP 0
+.nr PI 5n
+.nr QI 5n
+.nr I0 \\n(PIu
+.nr PS 10
+.nr VS 12
+.nr HY 14
+.ie n \{\
+.	if !\\n(PD .nr PD 1v
+.	nr DV 1v\}
+.el \{\
+.	if !\\n(PD .nr PD 0.3v
+.	nr DV .5v\}
+.nr ML 3v
+.ps \\n(PS
+.ie \\n(VS>=41 .vs \\n(VSu
+.el .vs \\n(VSp
+.nr IR 0
+.nr I0 0
+.nr I1 \\n(PIu
+.nr TB 0
+.nr SJ \\n(.j
+.nr LL 6i
+.ll \\n(LLu
+.nr LT \\n(.l
+.lt \\n(LTu
+.ev 1
+.if !\\n(FL .nr FL \\n(LLu*11u/12u
+.ll \\n(FLu
+.ps 8
+.vs 10p
+.ev
+.if \\*(CH .ds CH "\(hy \\\\n(PN \(hy
+.wh 0 NP
+.wh -\\n(FMu FO
+.ch FO 16i
+.wh -\\n(FMu FX
+.ch FO -\\n(FMu
+.if t .wh -\\n(FMu/2u BT
+.if n .wh -\\n(FMu/2u-1v BT
+. \" no overstriking bold or italic; switch underlining to bold italic
+. \" (sad historical botch, the .uf font must be 2, 3, or 4)
+.if n .uf 4
+.if n .bd 3
+.nr CW 0-1
+.nr GW 0-1
+..
+.de TM
+.if !\\n(IM .if !\\n(MN .pn 0
+.so \\*(sd/tmac.scover
+.if !\\n(IM .if !\\n(MN .rm IM MF MR
+.if n .if !\\n(.T .pi /usr/bin/col
+.nr ST 1
+.ds QF TECHNICAL MEMORANDUM
+.br
+.ds MN \\$1
+.if !"\\$1"" .nr MM 1
+.if !"\\$2"" .nr MC 1
+.if !"\\$3"" .nr MG 1
+.nr TN 1
+.if \\n(.$-1 .ds CA \\$2
+.if \\n(.$-2 .ds CC \\$3
+.rm RP S0 S2 AX
+..
+.		\" IM - internal memorandum
+.de IM
+.nr IM 1
+.TM "\\$1" "\\$2" "\\$3"
+.rm QF
+.RA
+.rm RA RP MF MR
+..
+.		\" MF - memorandum for file.
+.de MF
+.nr MN 1
+.TM "\\$1" "\\$2" "\\$3"
+.rm MR
+.rm IM
+.RA
+.rm RA RP TM
+..
+.		\" MR - memo for record
+.de MR
+.nr MN 2
+.TM "\\$1" "\\$2" "\\$3"
+.ds QF MEMORANDUM FOR RECORD
+.rm MF
+.RA
+.rm RA RP IM TM
+..
+.	\" LT - letter
+.de LT
+.if !\\n(PO .ie n .nr PO 1.5i
+.el .nr PO 1.3i
+.po \\n(POu
+.LP
+.rs
+.if !"\\$1"" \{\
+.	vs -2p
+.if "\\$1"LT" .ta 3.9i 4.45i
+.if !"\\$1"LT" .ta 3.9i 4.45i
+.	sp .2i
+.	nf
+.	if "\\$1"LT" 	\s36\(FA\s0
+.	if !"\\$1"LT" 	\s36\(LH\s0
+.	br
+\s7\l'7i'\s0
+.sp
+.	br
+.	if !"\\$2"" .ds xR "		\\$2
+.	ds xP 908-582-3000
+.	if !"\\$3"" .ds xP \\$3
+.	if "\\$1"LT" \s8\f(HBBell Laboratories\fP		\fH600 Mountain Avenue
+.	if !"\\$1"LT" \s8\f(HBBell Laboratories\fP		\fH600 Mountain Avenue
+.	if !"\\$2"" \\*(xR
+		Murray Hill, NJ 07974-0636
+		\\*(xP
+.	if !"\\$4"" 		\\$4
+.	if !"\\$5"" 		\\$5
+.	if !"\\$6"" 		\\$6
+.	if !"\\$7"" 		\\$7
+.ft 1
+.ps
+.	sp -.75i
+.	vs
+.	fi \}
+.if n \{\
+.	sp 1i
+.	in 4.55i\}
+.if t \{\
+.	sp 1.45i
+.	in 3.5i\}
+.ll 8i
+\\*(DY
+.ll
+.in 0
+.br
+.if t .sp 3
+.if n \{\
+.	sp
+.	na\}
+.nf
+.rm CF
+.de SG	\" nested defn
+.sp 2
+.ta 3.5i
+	Sincerely,
+.sp 3
+	\\\\$1
+.ds CH
+\\..
+..
+.de OK
+.br
+.di
+.di OD
+..
+.de RP		\" released paper
+.nr ST 2
+.pn 0
+.rm SG CS TM QF IM MR MF EG
+.br
+..
+.de TR		\" Comp. Sci. Tech Rept series.
+.nr ST 3
+.pn 0
+.ds MN \\$1
+.rm SG CS TM QF IM MR M EG
+.br
+..
+.	\"FP - font position for a family
+.de FP
+.ds TF \\$1
+.if '\\$1'palatino'\{\
+.	fp 1 R PA
+.	fp 2 I PI
+.	fp 3 B PB
+.	fp 4 BI PX\}
+.if '\\$1'lucidabright'\{\
+.	fp 1 R LucidaBright
+.	fp 2 I LucidaBright-Italic
+.	fp 3 B LucidaBright-Demi
+.	fp 4 BI LucidaBright-DemiItalic
+.	fp 5 CW LucidaSansCW\}
+.if '\\$1'lucidasans'\{\
+.	fp 1 R LucidaSans
+.	fp 2 I LucidaSansI
+.	fp 3 B LucidaSansB
+.	fp 5 CW LucidaCW\}
+.if '\\$1'syntax'\{\
+.	fp 1 R Syntax
+.	fp 2 I SyntaxI
+.	fp 3 B SyntaxB
+.	fp 5 CW LucidaCW\}
+.if '\\$1'century'\{\
+.	ie '\\*(.T'202'\{\
+.		fp 1 NR Centsb
+.		fp 2 NI CentI
+.		fp 3 NB CentB
+.		fp 4 NX CentBI\}
+.	el \{\
+.		fp 1 NR
+.		fp 2 NI
+.		fp 3 NB
+.		fp 4 NX\}\}
+.if '\\$1'helvetica'\{\
+.	fp 1 H
+.	fp 2 HI
+.	fp 3 HB
+.	fp 4 HX\}
+.if '\\$1'bembo'\{\
+.	ie '\\*(.T'202'\{\
+.		fp 1 B1 Bembo
+.		fp 2 B2 BemboI
+.		fp 3 B3 BemboB
+.		fp 4 B4 BemboBI\}
+.	el \{\
+.		fp 1 B1
+.		fp 2 B2
+.		fp 3 B3
+.		fp 4 B4\}\}
+.if '\\$1'optima'\{\
+.	fp 1 R Optima
+.	fp 2 I OptimaI
+.	fp 3 B OptimaB
+.	fp 4 BI OptimaBI\}
+.if '\\$1'souvenir'\{\
+.	fp 1 R Souvenir
+.	fp 2 I SouvenirI
+.	fp 3 B SouvenirB
+.	fp 4 BI SouvenirBI\}
+.if '\\$1'melior'\{\
+.	fp 1 R Melior
+.	fp 2 I MeliorI
+.	fp 3 B MeliorB
+.	fp 4 BI MeliorBI\}
+.if '\\$1'times'\{\
+.	fp 1 R
+.	fp 2 I
+.	fp 3 B
+.	fp 4 BI\}
+..
+.	\"TL - title and initialization
+.de TL
+.br
+.nr TV 1
+.if \\n(IM .rm CS
+.if \\n(MN .rm CS
+.ME
+.rm ME
+.di WT
+.na
+.fi
+.ll 5.0i
+.if n .if \\n(TN .ll 29
+.if t .if \\n(TN .ll 3.5i
+.ft 3
+.ps \\n(PS
+.if !\\n(TN \{\
+.	ps +2
+.	vs \\n(.s+2
+.	rm CS\}
+.hy 0
+..
+.de TX
+.rs
+.sp .5i
+.ce 1000
+.if n .ul 1000
+.ps 12
+.ft 3
+.vs 15p
+.ne 4
+.hy 0
+.WT
+.hy \\n(HY
+.ce 0
+.ul 0
+..
+.	\"	AU - author(s)
+.de AU
+.nr AV 1
+.ad \\n(SJ
+.br
+.di
+.br
+.nf
+.nr NA +1
+.ds R\\n(NA \\$1
+.ds E\\n(NA \\$2
+.di A\\n(NA
+.ll \\n(LLu
+.ie t \{\
+.	ie !\\n(TN .ft 2
+.	el \{\
+.		ft 3
+.		ll 1.4i\}\}
+.el \{\
+.	ie !\\n(TN .ft 1
+.	el \{\
+.		ft 3
+.		ll 16\}\}
+.ps \\n(PS
+..
+.de AX
+.ft 1
+.rs
+.ce 1000
+.if n .ul 0
+.ps \\n(PS
+.ie \\n(VS>=41 .vs \\n(VSu
+.el .vs \\n(VSp
+.if t \{\
+.	sp
+.	A1
+.	sp 0.5
+.	ns
+.	I1
+.	if \\n(NA-1 .sp
+.	A2
+.	if \\n(NA-1 .sp 0.5
+.	ns
+.	I2
+.	if \\n(NA-2 .sp
+.	A3
+.	if \\n(NA-2 .sp 0.5
+.	ns
+.	I3
+.	if \\n(NA-3 .sp
+.	A4
+.	if \\n(NA-3 .sp 0.5
+.	ns
+.	I4
+.	if \\n(NA-4 .sp
+.	A5
+.	if \\n(NA-4 .sp 0.5
+.	ns
+.	I5
+.	if \\n(NA-5 .sp
+.	A6
+.	if \\n(NA-5 .sp 0.5
+.	ns
+.	I6
+.	if \\n(NA-6 .sp
+.	A7
+.	if \\n(NA-6 .sp 0.5
+.	ns
+.	I7
+.	if \\n(NA-7 .sp
+.	A8
+.	if \\n(NA-7 .sp 0.5
+.	ns
+.	I8
+.	if \\n(NA-8 .sp
+.	A9
+.	if \\n(NA-8 .sp 0.5
+.	ns
+.	I9\}
+.if n \{\
+.	sp 2
+.	A1
+.	sp 
+.	ns
+.	I1
+.	if \\n(NA-1 .sp 2
+.	A2
+.	if \\n(NA-1 .sp
+.	ns
+.	I2
+.	if \\n(NA-2 .sp 2
+.	A3
+.	if \\n(NA-2 .sp
+.	ns
+.	I3
+.	if \\n(NA-3 .sp 2
+.	A4
+.	if \\n(NA-3 .sp
+.	ns
+.	I4
+.	if \\n(NA-4 .sp 2
+.	A5
+.	if \\n(NA-4 .sp
+.	ns
+.	I5
+.	if \\n(NA-5 .sp 2
+.	A6
+.	if \\n(NA-5 .sp
+.	ns
+.	I6
+.	if \\n(NA-6 .sp 2
+.	A7
+.	if \\n(NA-6 .sp
+.	ns
+.	I7
+.	if \\n(NA-7 .sp 2
+.	A8
+.	if \\n(NA-7 .sp
+.	ns
+.	I8
+.	if \\n(NA-8 .sp 2
+.	A9
+.	if \\n(NA-8 .sp
+.	ns
+.	I9\}
+..
+.	\"AI - authors institution
+.de AI
+.br
+.ft 1
+.di
+.di I\\n(NA
+.nf
+..
+.	\"AB - begin an abstract
+.de AB
+.br
+.di
+.ul 0
+.ce 0
+.nr 1T 1
+.nr IK 1
+.nr KI 1
+.di WB
+.rs
+.nr AJ 1
+.ce 1
+.ft 2
+.if n .ul
+.ll \\n(LLu
+.ie \\n(.$ \{\
+.	if !"\\$1"-" .if !"\\$1"no" \\$1
+.	if !"\\$1"-" .if !"\\$1"no" .sp\}
+.el \{\
+ABSTRACT
+.sp\}
+.hy \\n(HY
+.ul 0
+.ce 0
+.fi
+.ft 1
+.nr OJ \\n(.i
+.in +\\n(.lu/12u
+.ll -\\n(.lu/12u
+.br
+.ps \\n(PS
+.ie \\n(VS>=41 .vs \\n(VSu
+.el .vs \\n(VSp
+.ti +\\n(PIu
+..
+.	\"AE - end of an abstract
+.de AE
+.br
+.di
+.ll \\n(LLu
+.ps \\n(PS
+.ie \\n(VS>=41 .vs \\n(VSu
+.el .vs \\n(VSp
+.nr 1T 0
+.nr IK 0
+.in \\n(OJu
+.nr AJ 0
+.di
+.ce 0
+.if \\n(ST=2 .SY
+.if \\n(ST<3 .rm SY
+..
+.	\"S2 - release paper style
+.	\"SY - cover sheet of released paper
+.de SY
+.ll \\n(LLu
+.ns
+.if \\n(TV .TX
+.if \\n(AV .AX
+.rs
+.ce 0
+.nf
+.sp 3
+.ls 1
+.pn 2
+.WB
+.ls 
+.sp 3v
+\\*(DY
+.sp |9i
+.if \\n(FP .FA
+.FG
+.if \\n(GA=1 .nr GA 2
+.fi
+..
+.	\"S2 - first text page, released paper format
+.de S2
+.ce 0
+.br
+.SY
+.rm SY
+.bp 1
+.if \\n(TV .TX
+.if \\n(AV .AX
+.rs
+.ce 0
+.ft 1
+.ad \\n(SJ
+..
+.	\"S0- mike lesk conserve paper style
+.de S0
+.ce 0
+.br
+.ll \\n(LLu
+.if \\n(TV+\\n(AV .ns
+.if \\n(TV .TX
+.if \\n(AV .AX
+.if \\n(TV+\\n(AV .rs
+.ce 0
+.if \\n(TV .sp 2
+.ls 1
+.if \\n(FP \{\
+.	FJ
+.	nf
+.	FG
+.	fi
+.	FK
+.	nr FP 0\}
+.nf
+.WB
+.ls
+.fi
+.ad \\n(SJ
+..
+.	\"S3 - CSTR style
+.de S3
+.rs
+.sp |2.25i
+.ce 1000
+.I1
+.if \\n(NA>1 \{\
+.	sp .5
+.	I2\}
+.if \\n(NA>2 \{\
+.	sp .5
+.	I3\}
+.if \\n(NA>3 \{\
+.	sp .5
+.	I4\}
+.if \\n(NA>4 \{\
+.	sp .5
+.	I5\}
+.if \\n(NA>5 \{\
+.	sp .5
+.	I6\}
+.if \\n(NA>6 \{\
+.	sp .5
+.	I7\}
+.if \\n(NA>7 \{\
+.	sp .5
+.	I8\}
+.if \\n(NA>8 \{\
+.	sp .5
+.	I9\}
+.sp |4i
+.	\"check how long title is: can space extra .25 inch if short
+.di EZ
+.WT
+.di
+.if \\n(dn<1.5v .if \\n(NA=1 .sp .25i
+.ft 1
+Computing Science Technical Report No. \\*(MN
+.sp
+.if t .ft 3
+.if n .ul 100
+.ps 12
+.vs 15p
+.hy 0
+.WT
+.hy \\n(HY
+.ft 1
+.if n .ul 0
+.ps 10
+.vs 12p
+.sp
+.ft 1
+.A1
+.A2
+.A3
+.A4
+.A5
+.A6
+.A7
+.A8
+.A9
+.ce 0
+.sp |8.5i
+.ce 0
+\\*(DY
+.DZ
+.bp 0
+.ft 1
+.S2
+..
+.	\"SG - signature
+.de SG
+.br
+.KS
+.in +2u*\\n(.lu/3u
+.sp 4
+.A1
+.if \\n(NA>1 .sp 4
+.A2
+.if \\n(NA>2 .sp 4
+.A3
+.if \\n(NA>3 .sp 4
+.A4
+.if \\n(NA>4 .sp 4
+.A5
+.if \\n(NA>5 .sp 4
+.A6
+.if \\n(NA>6 .sp 4
+.A7
+.if \\n(NA>7 .sp 4
+.A8
+.if \\n(NA>8 .sp 4
+.A9
+.in
+.nf
+.if \\n(.$<1 .G9
+.sp -1
+.if \\n(.$>=1 \\$1
+.if \\n(.$>=2 \\$2
+.if \\n(.$>=3 \\$3
+.if \\n(.$>=4 \\$4
+.if \\n(.$>=5 \\$5
+.if \\n(.$>=6 \\$6
+.if \\n(.$>=7 \\$7
+.if \\n(.$>=8 \\$8
+.if \\n(.$>=9 \\$9
+.fi
+.br
+.KE
+..
+.	\"Tables.  TS - table start, TE - table end
+.de TS
+.br
+.if !\\n(1T .RT
+.ul 0
+.ti \\n(.iu
+.if t .sp 0.5
+.if n .sp
+.if \\$1H .TQ
+.nr IX 1
+..
+.de TQ
+.di TT
+.nr IT 1
+..
+.de TH
+.if \\n(.d>0.5v \{\
+.	nr T. 0
+.	T# 0\}
+.di
+.nr TQ \\n(.i
+.nr HT 1
+.in 0
+.mk #a
+.mk #b
+.mk #c
+.mk #d
+.mk #e
+.mk #f
+.TT
+.in \\n(TQu
+.mk #T
+..
+.de TE
+.nr IX 0
+.if \\n(IT .if !\\n(HT \{\
+.	di
+.	nr EF \\n(.u
+.	nf
+.	TT
+.	if \\n(EF .fi\}
+.nr IT 0
+.nr HT 0
+.if n .sp 1
+.if t .sp 0.5
+.rm a+ b+ c+ d+ e+ f+ g+ h+ i+ j+ k+ l+ n+ m+
+.rr 32 33 34 35 36 37 38 40 79 80 81 82
+.rr a| b| c| d| e| f| g| h| i| j| k| l| m|
+.rr a- b- c- d- e- f- g- h- i- j- k- l- m-
+..
+.so \*(sd/tmac.skeep
+.de EQ  \"equation, breakout and display
+.nr EF \\n(.u
+.rm EE
+.nr LE 1	\" 1 is center
+.ds EL \\$1
+.if "\\$1"L" \{\
+.	ds EL \\$2
+.	nr LE 0\}
+.if "\\$1"C" .ds EL \\$2
+.if "\\$1"R" \{\
+.	ds EL \\$2 \" 2 is right adjust
+.	nr LE 2\}
+.if "\\$1"I" \{\
+.	nr LE 0
+.	if "\\$3"" .ds EE \\h'|10n'
+.	el .ds EE \\h'\\$3'
+.	ds EL \\$2\}
+.if \\n(YE .nf
+.di EZ
+..
+.de EN  \" end of a displayed equation
+.br
+.di
+.rm EZ
+.nr ZN \\n(dn
+.if \\n(ZN .if !\\n(YE .LP
+.if !\\n(ZN .if !"\\*(EL"" .nr ZN 1
+.if \\n(ZN \{\
+.	ie "\\n(.z"" \{\
+.		if t .if !\\n(nl=\\n(PE .sp .5
+.		if n .if !\\n(nl=\\n(PE .sp 1\}
+.	el \{\
+.		if t .if !\\n(.d=\\n(PE .sp .5
+.		if n .if !\\n(.d=\\n(PE .sp 1\}\}
+'pc
+.if \\n(BD .nr LE 0 \" don't center if block display or mark/lineup
+.if \\n(MK \{\
+.	if \\n(LE=1 .ds EE \\h'|10n'
+.	nr LE 0\}
+'lt \\n(.lu
+.if !\\n(EP .if \\n(ZN \{\
+.	if \\n(LE=1 .tl \(ts\(ts\\*(10\(ts\\*(EL\(ts
+.	if \\n(LE=2 .tl \(ts\(ts\(ts\\*(10\\*(EL\(ts
+.	if !\\n(LE \{\
+.		if !\\n(BD .tl \(ts\\*(EE\\*(10\(ts\(ts\\*(EL\(ts
+.		if \\n(BD .if \\n(BD<\\w\(ts\\*(10\(ts .nr BD \\w\(ts\\*(10\(ts
+.		if \\n(BD \!\\*(10\\t\\*(EL\}\}
+.if \\n(EP .if \\n(ZN \{\
+.	if \\n(LE=1 .tl \(ts\\*(EL\(ts\\*(10\(ts\(ts
+.	if \\n(LE=2 .tl \(ts\\*(EL\(ts\(ts\\*(10\(ts
+.	if !\\n(LE \{\
+.		if !\\n(BD .tl \(ts\\*(EL\\*(EE\\*(10\(ts\(ts\(ts
+.		if \\n(BD .if \\n(BD<\\w\(ts\\*(10\(ts .nr BD \\w\(ts\\*(10\(ts
+.		if \\n(BD \!\\h'-\\\\n(.iu'\\*(EL\\h'|0'\\*(10\}\}
+'lt \\n(LLu
+'pc %
+.if \\n(YE .if \\n(EF .fi
+.if t .if \\n(ZN .sp .5
+.if n .if \\n(ZN .sp
+.ie "\\n(.z"" .nr PE \\n(nl
+.el .nr PE \\n(.d
+..
+.de PS	\" start picture
+.	\" $1 is height, $2 is width, both in inches
+.if \\$1>0 .sp .35
+.ie \\$1>0 .nr $1 \\$1
+.el .nr $1 0
+.in (\\n(.lu-\\$2)/2u
+.ne \\$1
+..
+.de PE	\" end of picture
+.in
+.if \\n($1>0 .sp .65
+..
+.			\" .P1/.P2 macros for programs
+.
+.nr XP 1	\" delta point size for program
+.nr XV 1p	\" delta vertical for programs
+.nr XT 8	\" delta tab stop for programs
+.nr DV .5v	\" space before start of program
+.
+.de P1
+.nr P1 .4i	\" program indent in .P1
+.nr OI .4i
+.if \\n(.$ .nr P1 \\$1
+.br
+.nr v \\n(.v
+.di p1
+.in \\n(P1u
+.nf
+.ps -\\n(XP
+.vs -\\n(XVu
+.ft CW
+.nr t \\n(XT*\\w'x'u
+.ta 1u*\\ntu 2u*\\ntu 3u*\\ntu 4u*\\ntu 5u*\\ntu 6u*\\ntu 7u*\\ntu 8u*\\ntu 9u*\\ntu 10u*\\ntu 11u*\\ntu 12u*\\ntu 13u*\\ntu 14u*\\ntu
+..
+.
+.de P2
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