.lg 0 .ds sd #9/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'luxisans'\{\ . fp 1 R LuxiSans . fp 2 I LuxiSans-Oblique . fp 3 B LuxiSans-Bold . fp 4 BI LuxiSans-BoldOblique . fp 5 CW LuxiMono\} .if '\\$1'dejavu'\{\ . fp 1 R DejaVuSerif . fp 2 I DejaVuSerifOblique . fp 3 B DejaVuSerifBold . fp 4 BI DejaVuSerifBoldOblique . fp 5 CW DejaVuMonoSans\} .if '\\$1'dejavusans'\{\ . fp 1 R DejaVuSans . fp 2 I DejaVuSansOblique . fp 3 B DejaVuSansBold . fp 4 BI DejaVuSansBoldOblique . fp 5 CW DejaVuMonoSans\} .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 .ie h .ll \\n(LLu .el \{\ .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 .if h .ce 999 .. .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 .if h .ce 999 .. .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 .fi .. . \"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 .. .if h \{\ .de TS .nr tp -1 1 .ds tp x\\n+(tp.png .html -
.dp .TE troff2png >\\*(tp .. .\} .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($1>0 .sp .65 .. .if h \{\ .de PS .nr tp -1 1 .ds tp x\\n+(tp.png .html -
.dp .PE troff2png >\\*(tp .. .\} . \" .P1/.P2 macros for programs . .nr XP 1 \" delta point size for program .if h .nr XP 0 .nr XV 1p \" delta vertical for programs .nr XT 8 \" delta tab stop for programs .nr DV .5v \" space before start of program . .de P1 .nr P1 .4i \" program indent in .P1 .nr OI .4i .if \\n(.$ .nr P1 \\$1 .br .nr v \\n(.v .di p1 .in +\\n(P1u .nf .ps -\\n(XP .vs -\\n(XVu .nr xx \\n(.sp .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 .br .ps \\n(PS .vs \\n(VSp .vs \\nvu .ft 1 .in .di .br .sp \\n(DVu .br .if \\n(.$=0 .ne \\n(dnu \" -\\n(DVu .nf .p1 .sp \\n(DVu .br .fi .. . .de ME .nr SJ \\n(.j .if \\n(LL .nr LT \\n(LL .nr YE 1 .if !\\n(PO .nr PO \\n(.o .if \\n(mo-0 .ds MO January .if \\n(mo-1 .ds MO February .if \\n(mo-2 .ds MO March .if \\n(mo-3 .ds MO April .if \\n(mo-4 .ds MO May .if \\n(mo-5 .ds MO June .if \\n(mo-6 .ds MO July .if \\n(mo-7 .ds MO August .if \\n(mo-8 .ds MO September .if \\n(mo-9 .ds MO October .if \\n(mo-10 .ds MO November .if \\n(mo-11 .ds MO December .if \\n(dw-0 .ds DW Sunday .if \\n(dw-1 .ds DW Monday .if \\n(dw-2 .ds DW Tuesday .if \\n(dw-3 .ds DW Wednesday .if \\n(dw-4 .ds DW Thursday .if \\n(dw-5 .ds DW Friday .if \\n(dw-6 .ds DW Saturday .nr yP (\\n(yr+2000)/100) .nr yD (\\n(yr%100 .af yD 01 .if "\\*(DY"" .ds DY \\*(MO \\n(dy, \\n(yP\\n(yD .if "\\*(CF"" .if n .ds CF "\\*(DY .. . \"EM end up macro - process left over keep-release .de EM .br .if \\n(AJ .tm Syntax error: no .AE .if \\n(IF .ab Missing .FE somewhere .if t .if \\n(TB=0 .wh -1p CM .if \\n(TB \{\&\c ' bp . NP . ch CM 160\} .. . \"NP new page .de NP .rr PE .if \\n(FM+\\n(HM>=\\n(.p \{\ . tm Margins bigger than page length. . ab . ex\} .if t .CM .if !\\n(HM .nr HM 1i 'sp \\n(HMu/2u .ev 1 .nr PX \\n(.s .nr PF \\n(.f .nr PV \\n(.v .lt \\n(LTu .ps \\n(PS .vs \\n(PS+2 .ft 1 .if \\n(PO .po \\n(POu .PT .ps \\n(PX .vs \\n(PVu .ft \\n(PF .ev 'sp |\\n(HMu .nr XX 0 1 .nr YY 0-\\n(FMu .ch FO 16i .ch FX 17i .ch FO \\n(.pu-\\n(FMu .ch FX \\n(.pu-\\n(FMu .if \\n(MF .FV .nr MF 0 .mk .os .ev 1 .if !\\n(TD .if \\n(TC<5 .XK .nr TC 0 .ns .ev .nr TQ \\n(.i .nr TK \\n(.u .if \\n(IT \{\ . in 0 . nf . TT . in \\n(TQu . if \\n(TK .fi\ \} .mk #T ....if t .if \\n(.o+\\n(LL>7.75i .tm Offset + line length exceeds 7.75 inches, too wide .. .de XK .nr TD 1 .nf .ls 1 .in 0 .rn KJ KL .KL .rm KL .if "\\n(.z"KJ" .di .nr TB 0 .if "\\n(.z"KJ" .nr TB 1 .br .in .ls .fi .if (\\n(nl+1v)>(\\n(.p-\\n(FM) \{\ . if \\n(NX>1 .RC . if \\n(NX<1 .bp\} .nr TD 0 .. .de KD .nr KM 0 .if "\\n(.z"" .if \\$2>0 .if \\n(nl>\\n(HM \{\ . if (\\n(nl+1v)<(\\n(.p-\\n(FM) .di KJ \" full page figure must have new page . sp 15i\} .if "\\n(.z"" .if \\n(nl>\\n(HM .if \\$2=0 .if (\\n(nl+1v)>(\\n(.p-\\n(FM) .sp 15i .if "\\n(.z"KJ" .nr KM 1 \" KM is 1 if in a rediversion of keeps .if \\n(KM>0 \!.KD \\$1 \\$2 .nr KR \\n(.t .if \\n(nl<=\\n(HM .nr KR 32767 .if \\n(KM=0 \{\ . if \\n(KR<\\$1 \{\ . di KJ . nr KM 1\} . if \\$2>0 .if (\\n(nl+1v)>(\\n(.p-\\n(FM) .sp 15i\} .rs .if \\n(KM=0 .if \\$2>0 .sp \\n(.tu-\\$1u .. .de PT .lt \\n(LLu .pc % .nr PN \\n% .if \\n%-1 .tl '\\*(LH'\\*(CH'\\*(RH' .lt \\n(.lu .. . \"FO - footer of page .de FO .rn FO FZ .if \\n(IT>0 \{\ . nr T. 1 . if \\n(FC=0 .T# 1 . br\} .nr FC +1 .if \\n(NX<2 .nr WF 0 .nr dn 0 .if \\n(FC<=1 .if \\n(XX .XF .rn FZ FO .nr MF 0 .if \\n(dn .nr MF 1 .if !\\n(WF \{\ . nr YY 0-\\n(FMu . ch FO \\n(YYu\} .if !\\n(dn .nr WF 0 .if \\n(FC<=1 .if \\n(XX=0 \{\ . if \\n(NX>1 .RC . if \\n(NX<1 'bp\} .nr FC -1 .if \\n(ML>0 .ne \\n(MLu .. . \"2C - begin double column .de 2C .MC \" default MC is double column .. .de MC \" multiple columns- arg is line length .nr L1 \\n(LL*7/15 .if \\n(CW>=0 .nr L1 \\n(CWu .if \\n(.$ .nr L1 \\$1n .if \\n(GW>=0 .nr GW \\n(GWu .if \\n(.$>1 .nr GW \\$2n .nr NQ \\n(LL/\\n(L1 .if \\n(NQ<1 .nr NQ 1 .if \\n(NQ>2 .if (\\n(LL%\\n(L1)=0 .nr NQ -1 .if !\\n(1T \{\ . 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TT . in \\n(TQu\} .mk #T .ns .. .de C2 .po \\n(POu .nr NC +1 .if \\n(NC>\\n(NX .nr NC 1 'bp .. . \"1C - return to single column format .de 1C .MC \\n(LLu .hy \\n(HY .. .de MH Bell Laboratories Murray Hill, New Jersey 07974 .. .de PY Bell Laboratories Piscataway, New Jersey 08854 .. .de BT .nr PX \\n(.s .nr PF \\n(.f .ft 1 .ps \\n(PS 'lt \\n(LTu .po \\n(POu .if \\n%>0 .tl \(ts\\*(LF\(ts\\*(CF\(ts\\*(RF\(ts .ft \\n(PF .ps \\n(PX .. . \"PP - paragraph .de PP .RT .if \\n(1T .sp \\n(PDu .ti +\\n(PIu .. . \"SH - (unnumbered) section heading .de SH .ti \\n(.iu .RT .ie \\n(1T .sp 1 .el .BG .RT .ne 4 .ft 3 .if n .ul 1000 .. . \"NH - numbered heading .de N{ .RT .ie \\n(1T .sp 1 .el .BG .RT .ne 4 .ft 3 .if n .ul 1000 .nr NS \\$1 .if !\\n(.$ .nr NS 1 .if !\\n(NS .nr NS 1 .nr H\\n(NS +1 .if !\\n(NS-4 .nr H5 0 .if !\\n(NS-3 .nr H4 0 .if !\\n(NS-2 .nr H3 0 .if !\\n(NS-1 .nr H2 0 .if !\\$1 .if \\n(.$ .nr H1 1 .ds SN \\n(H1. .ti \\n(.iu .if \\n(NS-1 .as SN \\n(H2. .if \\n(NS-2 .as SN \\n(H3. .if \\n(NS-3 .as SN \\n(H4. .if \\n(NS-4 .as SN \\n(H5. .. .de NH .N{ \\$1 \\*(SN .. . \"BG - begin, execute at first PP .de BG .br .ME .rm ME .di .ce 0 .nr KI 0 .hy \\n(HY .nr 1T 1 .nr CS 0 .S\\n(ST .rm S0 S1 S2 S3 OD OK TX AX WT CS TM IM MF MR RP I1 I2 I3 I4 I5 CB E1 E2 .de TL .ft 3 .sp .if n .ul 100 .ce 100 .ps +2 \\.. .de AU .ft 2 .if n .ul 0 .ce 100 .sp .NL \\.. .de AI .ft 1 .ce 100 .if n .ul 0 .if n .sp .if t .sp .5 .NL \\.. .RA .rm RA .rn FJ FS .rn FK FE .nf .ev 1 .ps \\n(PS-2 .vs \\n(.s+2p .ev .if !\\n(KG .nr FP 0 .if \\n(GA>1 .if \\n(KG=0 .nr GA 0 \" next UNIX must be flagged. .nr KG 0 .if \\n(FP \{\ . 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