.nr DO \n(.o.nr tm 0.		RT - reset everything to normal state.de RT.if !\\n(1T .BG.if !\\n(IK .di.ce 0.ul 0.if \\n(IP .in -\\n(IQn.if !\\n(IP .nr IQ 5.if \\n(IP .nr IP -1.ft R.if t .ta 5n 10n 15n 20n 25n 30n 35n 40n 45n 50n 55n 60n 65n 70n 75n 80n.if n .ta 6 11 16 21 26 31 36 41 46 61 56 61 66 71 76 81.ps \\n(PS.vs \\n(VSp.fi...	IZ - initialization.de IZ.br.if n .nr y 0-6.if t .nr y -1i.nr x 0 1.nr IP 0.nr IQ 5.nr PS 10.nr VS 12.ps \\n(PS.vs \\n(VSp.nr TB 0.if t .CM.if t .nr LL 6i.if n .nr LL 60.ll \\n(LLu.nr LT \\n(.l.lt \\n(LTu.if n .tc ~.if n .tr ~ .if n .ds CH "- % -.if t .ds CH "\(en % \(en.ds Ch \\*(CH.if n .ds CF "\\*(DY.wh 0 NP.if t .wh -1i FO.if n .wh -6 FO.if n .wh -3 BT.if t .wh -.5i BT.if t .nr EP 10.i.if n .nr EP 60...de TM.pi /usr/bin/col.nr ST 1.ds MN \\$1.nr MM \\n(.$.nr tm 1.if \\n(.$-1 .ds CA \\$2.if \\n(.$-2 .ds CC \\$3.rm RP.rm S0.rm S2.rm AX...de RP.nr ST 2.rm SG.rm CS.rm TM...	TL - title and initialization.de TL.nr TV 1.di WT.na.fi.if n .ll 50.if n .if \\n(tm .ll 30.if t .ll 5.0i.if t .if \\n(tm .ll 3.5i.ft B.if !\\n(tm .ps 12...de TX.rs.if t .sp .5i.if n .sp 3.ce 1000.if n .ul 1000.ps 12.ft B.vs 15p.ne 4.WT...		AU - author(s).de AU.nr AV 1.ad.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(tm .ft I.if \\n(tm .ft B.if \\n(tm .if n .ll 16.if \\n(tm .if t .ll 1.4i.ps 10...de AX.ft R.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.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.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.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.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.I5...	AI - authors institution.de AI.br.ft R.di.di I\\n(NA.nf...	AB - begin an abstract.de AB.br.di.ll \\n(LTu.nr 1T 1.nr IK 1.di WB.rs.ce 1.if t .ft I.if n .ul.ll \\n(LTuABSTRACT.sp.fi.if t .ft R.nr oi \\n(.i.if n .in +\\n(.l/12.if t .in +\\n(.lu/12u.if t .ll -\\n(.lu/12u.if n .ll -\\n(.l/12.br.ps \\n(PS.if t .ti +5n.if n .ti +5...	AE - end of an abstract.de AE.br.di.ll \\n(LLu.nr 1T 0.nr IK 0.if n .in \\n(oi.if t .in \\n(oiu.di.ce 0.if \\n(ST-1 .SY.rm SY...	OK - "other keywords" for cover sheet..de OK.br.di.di OD.nf.ft B...	CS - spew out cover sheet.de CS.br.di.if t .pl 15i.tr ~.if n .sp 6.if t .po 0.5i.if t .sp .5i.if t .lg.if t .ll 7.0i.nf       \s24\(bs\s12\fB  Bell Laboratories        \s16\fRCover Sheet for Technical Memorandum.sp.if t \s6\l'7i'.fi.ps 9.ft I.if t .sp 2pThe information contained herein is for the use of employees of Bell Laboratories and is not for publication.  (See GEI 13.9-3)\p.ft R.nf.if t \s6\l'7i'.sp.if t .ll 6.0i.if n .ll 30.if t .po 1.0i.ps 9.if t .ta 0.5i 4.5i 4.9i.if n .ta 10 40 47.mkTitle- \fB\s10.rt.if t .in 0.5i.if n .in 10.WT.rt.ll \\n(LLu.if t .in 4.5i.if n .in 40\s9\fRDate-\s10\fB.rt.if t .in 4.9i.if n .in 47\\*(DY.sp.if t .ti 4.5i.if n .ti 40.mk\s9\fRTM-\fB\s10.br.rt.CT \\*(MN.rt.in 0.sp.mk\s9\fROther Keywords-\fB.rt.if t .in 1.1i.if n .in 20.OD.rm OK.rm OD.in 0.if t .sp .7i.if n .sp 3.ps 9.if t .ta 1.8i 3.3i 4.3i.if n .ta 20 35 45.ft RAuthor	Location	Extension	Charging Case- \s10\fB\\*(CA.ps 10.nf.mk.A1.rt	\\*(R1	\\*(E1	\fR\s9Filing Case- \s10\fB\\*(CC.if \\n(NA-1 .CB 2.if \\n(NA-2 .CB 3.if \\n(NA-3 .CB 4.if \\n(NA-4 .CB 5.ft R.if t .sp .4i.if n .sp 2.WB.br.if t .sp |8.3i.if n .sp 5.FF.rm FF.if t .sp |9.3i.nr x 50-\\n(nl.if n .sp \\nx.if t .po 0.5i.if t .ll 7i.nf.if t \l'7i'.if t .ta 1.4i 2.8i 4.2i.if n .ta 15 30 45.if t .sp 8pPages Text   \\$1	Other   \\$2	Total   \\$3.if t .sp 8p.if n .sp .if t No. Figures   \\$4	No. Tables   \\$5	No. Refs.   \\$6	\b'|||||~~'.if n No. Figures   \\$4	No. Tables   \\$5	No. Refs.   \\$6.if t \l'7i'.ps 7.if n .sp.tl 'E-1932-C (6-73)'SEE REVERSE SIDE FOR DISTRIBUTION LIST''.if t .po 0.5i.ll \\n(LLu.fi.if t .sp |10.8i.if t .po 0.ps 10.if t .tl '-'''.if t .pl.bp 1.if t .po \\n(DOu...	CB - help with cover sheet.de CB.br.mk.A\\$1.rt.if \\$1-1 .if !\\$1-2 \&	\\*(R2	\\*(E2.if \\$1-2 .if !\\$1-3 \&	\\*(R3	\\*(E3.if \\$1-3 .if !\\$1-4 \&	\\*(R4	\\*(E4.if \\$1-4 .if !\\$1-5 \&	\\*(R5	\\*(E5.br...de CT\\$1\\$2\\$3\\$4...	S1 - tm style .de S1.if n .sp 6.if t .sp .75i.if t .ta 4.75i.if n .ta 47.ll 80.ps 36.br.if t \t\(bs.vs .25i.ps 12.br.ft B.nf\tBell Laboratories.ft R.fi.na.ps 8.vs 12p.if n .sp 3.if t .sp .5i.mk.fi.ll.if n .ll 40.if t .ll 4.0iSubject:.ft B.ps.WT.ft R.br.if \\n(MM-1 \\s8Case- \\*(CA\\s10.if \\n(MM-2 --\s8 File- \\*(CC\\s10.br.rt.if n .ll 70.if t .ll 6.5i.if t .in 5.10i.if n .in 52.ps 8.mk.ti -6ndate:.ps \\n(PS.ft B.br.rt\\*(DY.sp.ft R.ps 8.mk.ti -6nfrom:.ps.br.rt.ft B.A1.br.A2.br.A3.br.A4.br.A5.ft R.sp.mk.ps 8.ti -6n.ft R.if \\n(MM TM:.br.rt.ps.ft B.hy 0.ll 10n.if \\n(MM \\*(MN.hy.ll.ft R.ll \\n(LLu.in.sp.ad.ce.ft IMEMORANDUM FOR FILE.ft R.sp.ad...	S2 - release paper style.	SY - cover sheet of released paper.de SY.ll \\n(LLu.sp 6.ns.if \\n(TV .TX.if \\n(AV .AX.ce 0.nf.sp 3.WB.fi...	S2 - first text page, released paper format.de S2.SY.rm SY.bp 1.if \\n(TV .TX.if \\n(AV .AX.ce 0.ft R.ad...	S0- mike lesk conserve paper style.de S0.ll \\n(LLu.rs.sp 6.ns.if \\n(TV .TX.if \\n(AV .AX.ce 0.nf.WB.fi.ad...	SG - signature.de SG.nf.if n .in +2*\\n(.l/3.if t .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.in\\$1.br...	Tables.  TS - table start, TE - table end.de TS.br.RT.ul 0.if t .sp 0.5.if n .sp.nf...de TE.fi.if n .sp 1.if t .sp 0.5...	DS - display.  If .DS C, center; L, left-adjust; I, indent..de DS.KS.\\$1D...de CD.ce 1000.nf.nr oi \\n(.i.if t .sp 0.5.if n .sp 1...de D.ID...de ID.nf.nr oi \\n(.i.if t .sp 0.5.if n .sp 1.if t .in +0.5i.if n .in +8...de LD.nf.nr oi \\n(.i.if t .sp 0.5.if n .sp 1...	DE - display end.de DE.ce 0.if n .in \\n(oi.if t .in \\n(oiu.KE.if t .sp 0.5.if n .sp 1.fi...	KS keep - for keep release features. As in IBM.de KS.if !\\n(IK .KQ.nr IK +1...	KQ - real keep processor.de KQ.br.di KK.nr TB 0...	KF - floating keep.de KF.if !\\n(IK .FQ.nr IK +1...	FQ real floating keep processor.de FQ.br.di KK.nr TB 1...	KE release - everything between keep and release is together.de KE.if \\n(IK .if !\\n(IK-1 .RQ.if \\n(IK .nr IK -1...	RQ real release.de RQ.br.di.if \\n(dn+\\n(nl-\\n(EP .if !\\n(TB .sp 200.if !\\n(dn+\\n(nl-\\n(EP .if \\n(TB .nr TB 0.nf.in 0.if !\\n(TB .KK.in.fi...	EQ default equation breakout.de EQ.if t .sp .5.if n .sp.ce.ne 2.ds EL \\$1.if \\n(.$-1 .ds EL \\$2.nr LE \\n(.$.@\\$1...	This nonsense permits recognition of .EQ L, .EQ I, .EQ C.	by invoking macros @L, @I, and so forth..de @L.ce0.nr LE -1...de @C.nr LE -1...de @I.ce 0.ti 10n.nr LE -1...de EN.ce 0.lt \\n(.lu.if \\n(LE .if n .sp -1.if \\n(LE .if n .tl '''\\*(EL'.if n .sp 1.if \\n(LE .if t .sp -1-\\n(.au.if \\n(LE .if t .tl '''\\*(EL'.if \\n(LE .if t .sp \\n(.au.if t .sp 0.5.ns...	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LP - left aligned (block) paragraph.de LP.RT.if t .sp 0.3.if n .sp.ne 3.if \\n(.$ .LB \\$1...	IE - synonym for .LP.de IE.LP...	LB - label paragraph.de LB.in +\\n(IQn.if n .ta \\n(IQ+1.if t .ta \\n(IQn.ti -\\n(IQn\\$1\t\c...	RS - prepare for double indenting.de RS.in +\\n(IQn.nr IP +1...	RE - retreat to the left.de RE.br.in -\\n(IQn...	CM - cut mark.de CM.po 0.tl '-'''.po...	B - bold font.de B.ft B.if n .ul 1000...	R - Roman font.de R.ft R.if n .ul 0...	I - italic font.de I.ft I.if n .ul 1000...	TA - tabs set in ens or chars.de TA.ta \\$1n \\$2n \\$3n \\$4n \\$5n \\$6n \\$7n \\$8n \\$9n...	SM - make smaller size.de SM.ps -2...	LG - make larger size.de LG.ps +2...	NL - return to normal size.de NL.ps \\n(PS...	DA - force date; ND - no date or new date..de DA.if \\n(.$ .ds DY \\$1 \\$2 \\$3 \\$4.ds CF \\*(DY...de ND.ds DY \\$1 \\$2 \\$3 \\$4.rm CF...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.ds DY \*(mo \n(dy, 19\n(yr.IZ.rm IZ.rm mo.de FN.FS...	FS - begin footnote.de FS'ce 0.di.da FF.ev1.if !\\n+x-1 .fs...	FE - footnote end.de FE.br.in 0.ev.di.if t .if !\\nx-1 .nr dn +\\n(.v.nr y -\\n(dn.if n .ch FO \\ny.if t .ch FO \\nyu.if t .if \\n(nl+\\n(.v-\\n(.p-\\ny .ch FO \\n(nlu+\\n(.vu.if n .if \\n(nl-\\n(.p-\\ny .ch FO \\n(nl+1...de fs SEPARATOR.if n __________________________.if t \l'1i'.br...de fz.FS.nf.fy.fi.FE...de fx.di fy...de xf.ev1.nf.FF.rm FF.di.fi.ev...de FL.ev1.ll \\$1.ev...de HOBell Laboratories,Holmdel, New Jersey 07733...de WHBell Laboratories,Whippany, New Jersey 07981...if t .ch FO 12i.if t .wh -1i fx.if t .ch FO -1i.if n .ch FO 100.if n .wh -6 fx.if n .ch FO -6.ev1.ll \n(LLu.if n .ll -\\n(.l/12.if t .ll -\\n(.lu/12u'ps8'vs10p.ev.br.em EM