.nr TN 0.\"	RT -  reset everything to normal state.de RT.if !\\n(1T .BG.if !\\n(IK .if !\\n(IF .if !\\n(IX .if !\\n(BE .di.ce 0.ul 0.if \\n(QP \{\.	ll +\\n(QIu.	in -\\n(QIu.	nr QP -1\}.if \\n(NX<=1 .if \\n(AJ=0 .ll \\n(LLu.if \\n(IF=0 \{\.	ps \\n(PS.	if \\n(VS>=40 .vs \\n(VSu.	if \\n(VS<=39 .vs \\n(VSp\}.if \\n(IP .in -\\n(I\\n(IRu.if \\n(IP=0 .nr I0 \\n(PIu.if \\n(IP .nr IP -1.ft 1.bd 1.ta 5n 10n 15n 20n 25n 30n 35n 40n 45n 50n 55n 60n 65n 70n 75n 80n.fi...	\"IZ - initialization.de IZ.if \\n(FM=0 .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.if !\\n(PD .if n .nr PD 1v.if !\\n(PD .if t .nr PD 0.3v.nr ML 3v.ps \\n(PS.if \\n(VS>40 .vs \\n(VSu.if \\n(VS<=39 .vs \\n(VSp.nr IR 0.nr TB 0.nr SJ \\n(.j.nr LL 6i.ll \\n(LLu.nr LT \\n(.l.lt \\n(LTu.ev 1.nr FL \\n(LLu*11u/12u.ll \\n(FLu.ps 8.vs 10p.ev.if \\*(CH .ds CH "\(hy \\\\n(PN \(hy.if n .ds CF "\\*(DY.wh 0 NP.wh -\\n(FMu FO.ch FO 16i.wh -\\n(FMu FX.ch FO -\\n(FMu.wh -\\n(FMu/2u BT...de TM.if \\n(IM=0 .if \\n(MN=0 .pn 0.so /usr/lib/tmac/tmac.scover.if \\n(IM=0 .if \\n(MN=0 .rm IM.if \\n(IM=0 .if \\n(MN=0 .rm MF.if \\n(IM=0 .if \\n(MN=0 .rm MR.if \\n(.T=0 .pi /usr/bin/col.nr ST 1.ds QF MEMORANDUM FOR FILE.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.rm S0.rm S2.rm AX...		\" IM - internal memorandum.de IM.nr IM 1.TM "\\$1" "\\$2" "\\$3".rm QF.RA.rm RA.rm RP.rm MF.rm MR...		\" MF - memorandum for file..de MF.nr MN 1.TM "\\$1" "\\$2" "\\$3".rm MR.rm IM.RA.rm RA.rm RP.rm TM...		\" MR - memo for record.de MR.nr MN 2.TM "\\$1" "\\$2" "\\$3".ds QF MEMORANDUM FOR RECORD.rm MF.RA.rm RA.rm RP.rm IM.rm TM...de EG.nr MN 3.TM "\\$1" "\\$2" "\\$3".ds QF ENGINEER'S NOTES.rm MF.rm RP.rm IM.RA.rm RA.rm TM...	\" LT - letter.de LT.LP.rs.sp 6.ll 80n.ti 48\\*(DY.ll.br.sp 3...de OK.br.di.di OD...de RP.nr ST 2.pn 0.rm SG.rm CS.rm TM.rm QF.rm IM.rm MR.rm MF.rm EG.br...de TR \" Comp. Sci. Tech Rept series..nr ST 3.pn 0.ds MN \\$1.rm SG.rm CS.rm TM.rm QF.rm IM.rm MR.rm MF.rm EG.br...	\"TL - title and initialization.de TL.br.nr TV 1.if \\n(IM>0 .rm CS.if \\n(MN>0 .rm CS.ME.rm ME.di WT.nr SJ \\n(.j.na.fi.ll 5.0i.if n .if \\n(TN .ll 30.if t .if \\n(TN .ll 3.5i.ft 3.ps 10.if !\\n(TN .ps 12.if !\\n(TN .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 14.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.if \\n(TN=0 .if t .ft 2.if \\n(TN=0 .if n .ft 1.if \\n(TN>0 .ft 3.if \\n(TN .if n .ll 16.if \\n(TN .if t .ll 1.4i.ps 10...de AX.ft 1.rs.ce 1000.if n .ul 0.ps 10.vs 12p.if n .sp 2.if t .sp.A1.if n .sp .if t .sp 0.5.ns.I1.if \\n(NA-1 .if n .sp 2.if \\n(NA-1 .if t .sp.A2.if \\n(NA-1 .if n .sp.if \\n(NA-1 .if t .sp 0.5.ns.I2.if \\n(NA-2 .if t .sp.if \\n(NA-2 .if n .sp 2.A3.if \\n(NA-2 .if t .sp 0.5.if \\n(NA-2 .if n .sp.ns.I3.if \\n(NA-3 .if t .sp.if \\n(NA-3 .if n .sp 2.A4.if \\n(NA-3 .if t .sp 0.5.if \\n(NA-3 .if n .sp.ns.I4.if \\n(NA-4 .if t .sp.if \\n(NA-4 .if n .sp 2.A5.if \\n(NA-4 .if n .sp.if \\n(NA-4 .if t .sp 0.5.ns.I5.if \\n(NA-5 .if t .sp.if \\n(NA-5 .if n .sp 2.A6.if \\n(NA-5 .if n .sp.if \\n(NA-5 .if t .sp 0.5.ns.I6.if \\n(NA-6 .if t .sp.if \\n(NA-6 .if n .sp 2.A7.if \\n(NA-6 .if n .sp.if \\n(NA-6 .if t .sp 0.5.ns.I7.if \\n(NA-7 .if t .sp.if \\n(NA-7 .if n .sp 2.A8.if \\n(NA-7 .if n .sp.if \\n(NA-7 .if t .sp 0.5.ns.I8.if \\n(NA-8 .if t .sp.if \\n(NA-8 .if n .sp 2.A9.if \\n(NA-8 .if n .sp.if \\n(NA-8 .if t .sp 0.5.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.if \\n(.$=0 ABSTRACT.if \\n(.$>0 .if !"\\$1"-" .if !"\\$1"no"  \\$1.if \\n(.$=0 .sp.if \\n(.$>0 .if !"\\$1"-" .if !"\\$1"no" .sp.hy 14.ul 0.ce 0.fi.ft 1.nr OJ \\n(.i.in +\\n(.lu/12u.ll -\\n(.lu/12u.br.ps \\n(PS.if \\n(VS>40 .vs \\n(VSu.if \\n(VS<=39 .vs \\n(VSp.ti +\\n(PIu...	\"AE - end of an abstract.de AE.br.di.ll \\n(LLu.ps \\n(PS.if \\n(VS>40 .vs \\n(VSu.if \\n(VS<=39 .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>0 .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>0 .ns.if \\n(TV .TX.if \\n(AV .AX.if \\n(TV+\\n(AV>0 .rs.ce 0.if \\n(TV>0 .sp 2.ls 1.if \\n(FP>0 \{\.	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.if \\n(NA>1 .I2.if \\n(NA>2 .sp .5.if \\n(NA>2 .I3.if \\n(NA>3 .sp .5.if \\n(NA>3 .I4.if \\n(NA>4 .sp .5.if \\n(NA>4 .I5.if \\n(NA>5 .sp .5.if \\n(NA>5 .I6.if \\n(NA>6 .sp .5.if \\n(NA>6 .I7.if \\n(NA>7 .sp .5.if \\n(NA>7 .I8.if \\n(NA>8 .sp .5.if \\n(NA>8 .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 1Computing Science Technical Report No. \\*(MN.sp.if t .ft 3.if n .ul 100.ps 12.vs 15p.hy 0.WT.hy 14.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.bp 0.ft 1.S2...	\"SG - signature.de SG.br.KS.in +2u*\\n(.lu/3u.sp 2.A1.if \\n(NA-1 .sp 2.A2.if \\n(NA-2 .sp 2.A3.if \\n(NA-3 .sp 2.A4.if \\n(NA-4 .sp 2.A5.if \\n(NA>5 .sp 2.A6.if \\n(NA>6 .sp 2.A7.if \\n(NA>7 .sp 2.A8.if \\n(NA>8 .sp 2.A9.in.nf.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.if \\n(.d>0.5v .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>0 .if \\n(HT=0 .di.if \\n(IT>0 .if \\n(HT=0 .nr EF \\n(.u.if \\n(IT>0 .if \\n(HT=0 .nf.if \\n(IT>0 .if \\n(HT=0 .TT.if \\n(IT>0 .if \\n(HT=0 .if \\n(EF>0 .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 /usr/lib/tmac/tmac.sdisp.de KS.so /usr/lib/tmac/tmac.skeep.]K.rn ]J KF.rn ]K KS...de KF.so /usr/lib/tmac/tmac.skeep.]J.rn ]K KS.rn ]J KF...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.if "\\$1"L" .nr LE 0.if "\\$1"C" .ds EL \\$2.if "\\$1"I" .nr LE 0.if "\\$1"I" .ds EE \\h'|10n'.if "\\$1"I" .if !"\\$3"" .ds EE \\h'\\$3'.if "\\$1"I" .ds EL \\$2.if \\n(YE>0 .nf.di EZ...de EN  \" end of a displayed equation.br.di.rm EZ.nr ZN \\n(dn.if \\n(ZN>0 .if \\n(YE=0 .LP.if \\n(ZN=0 .if !"\\*(EL"" .nr ZN 1.if "\\n(.z"" .if \\n(ZN>0 .if !\\n(nl=\\n(PE .if t .sp .5.if "\\n(.z"" .if \\n(ZN>0 .if !\\n(nl=\\n(PE .if n .sp 1.if !"\\n(.z"" .if \\n(ZN>0 .if !\\n(.d=\\n(PE .if t .sp .5.if !"\\n(.z"" .if \\n(ZN>0 .if !\\n(.d=\\n(PE .if n .sp 1'pc.if \\n(BD>0 .nr LE 0 \" can't mean centering in this case..if \\n(MK>0 .if \\n(LE=1 .ds EE \\h'|10n'.if \\n(MK>0 .nr LE 0 \" don't center if mark/lineup'lt \\n(.lu.if \\n(EP=0 .if \\n(ZN>0 .if \\n(LE>0 .tl \(ts\(ts\\*(10\(ts\\*(EL\(ts.if \\n(EP=0 .if \\n(ZN>0 .if \\n(LE=0 .if \\n(BD=0 .tl \(ts\\*(EE\\*(10\(ts\(ts\\*(EL\(ts.if \\n(EP=0 .if \\n(ZN>0 .if \\n(LE=0 .if \\n(BD>0 .if \\n(BD<\\w\(ts\\*(10\(ts .nr BD \\w\(ts\\*(10\(ts.if \\n(EP=0 .if \\n(ZN>0 .if \\n(LE=0 .if \\n(BD>0 \!\\*(10\\t\\*(EL.if \\n(EP>0 .if \\n(ZN>0 .if \\n(LE>0 .tl \(ts\\*(EL\(ts\\*(10\(ts\(ts.if \\n(EP>0 .if \\n(ZN>0 .if \\n(LE=0 .if \\n(BD=0 .tl \(ts\\*(EL\\*(EE\\*(10\(ts\(ts\(ts.if \\n(EP>0 .if \\n(ZN>0 .if \\n(LE=0 .if \\n(BD>0 .if \\n(BD<\\w\(ts\\*(10\(ts .nr BD \\w\(ts\\*(10\(ts.if \\n(EP>0 .if \\n(ZN>0 .if \\n(LE=0 .if \\n(BD>0 \!\\h'-\\\\n(.iu'\\*(EL\\h'|0'\\*(10.\".di EZ \" GCOS patch.\"\\*(10 \" GCOS patch.\".br \" GCOS patch.\".di \" GCOS patch.\".rm EZ \" GCOS patch'lt \\n(LLu'pc %.if \\n(YE>0 .if \\n(EF>0 .fi.rm EL 10 11 12 13 14 15 16 17 18 19 20 21 22 23.rr 10 11 12 13 14 15 16 17 18 19 20 21 22 23.if \\n(ZN>0 .if t .sp .5.if \\n(ZN>0 .if n .sp.if "\\n(.z"" .nr PE \\n(nl.if !"\\n(.z"" .nr PE \\n(.d...de ME.nr SJ \\n(.j.if \\n(LL>0 .nr LT \\n(LL.nr YE 1.if \\n(PO=0 .nr PO \\n(.o...	\"EM end up macro - process left over keep-release.de EM.br.if \\n(TB=0 .if t .wh -1p CM.if \\n(TB \&\c.if \\n(TB 'bp.if \\n(TB .NP.if \\n(TB .ch CM 160...	\"NP new page.de NP.if \\n(FM+\\n(HM>=\\n(.p .tm Margins bigger than page length..if \\n(FM+\\n(HM>=\\n(.p .ab.if \\n(FM+\\n(HM>=\\n(.p .ex.nr PX \\n(.s.nr PF \\n(.f.if t .CM.if \\n(HM=0 .nr HM 1i'sp \\n(HMu/2u.lt \\n(LTu.ps \\n(PS.ft 1.if \\n(PO>0 .po \\n(POu.PT.ps \\n(PX.ft \\n(PF'sp |\\n(HMu.nr XX 0 1.nr YY 0-\\n(FMu.ch FO 16i.ch FX 17i.ch FO -\\n(FMu.ch FX \\n(.pu-\\n(FMu.if \\n(MF .FV.nr MF 0.mk.os.ev 1