.nr PS 9 .nr VS 11 .ps \\n(PS .vs \\n(VS .nr DO .4i .po \n(DOu .nr CW 3.3i .nr WG 0.25i .rm PF .nr CP 1 .nr NT 1 \" no turnover bar .nr PQ \n(PS .nr BM 1i .de MX \" expand month name .if \\n(mo-0 .ds mo J\\\\s-2ANUARY\s0 .if \\n(mo-1 .ds mo F\\\\s-2EBRUARY\\\\s0 .if \\n(mo-2 .ds mo M\\\\s-2ARCH\\\\s0 .if \\n(mo-3 .ds mo A\\\\s-2PRIL\\\\s0 .if \\n(mo-4 .ds mo M\\\\s-2AY\\\\s0 .if \\n(mo-5 .ds mo J\\\\s-2UNE\\\\s0 .if \\n(mo-6 .ds mo J\\\\s-2ULY\\\\s0 .if \\n(mo-7 .ds mo A\\\\s-2UGUST\\\\s0 .if \\n(mo-8 .ds mo S\\\\s-2EPTEMBER\\\\s0 .if \\n(mo-9 .ds mo O\\\\s-2CTOBER\\\\s0 .if \\n(mo-10 .ds mo N\\\\s-2OVEMBER\\\\s0 .if \\n(mo-11 .ds mo D\\\\s-2ECEMBER\\\\s0 .. .if \nM=1 .so /usr/mel/aip/countrev .if \nM=2 .so /usr/mel/aip/findbig .if \nM=0 .so /usr/share/tmac/tmac.a .br .af % 1 .CM .sp 1i .IZ .rm IZ .de FS .nr FP 3 .if \\n(.d*2>\\n(L4 .nr FP 4 .if \\n(NC=1 .nr FP 2 .GS \\n(FP .br \l'2i' .br .af % 1 .. .de FE .GE .. .ad .de AE \"abstract end .ll \\n(LLu .in \\n(XIu .ce 0 .if !\\n(.d=\\n(nl .AX .nr AJ 0 .nr XR 0 .nr ND 0 .sp 1 .. .de AB \"abstract start .ce 0 .ll \\n(LLu .fi .ft 1 .sp .nr XI \\n(.i .in +\\n(.lu/8u .nr AJ 1 .ll -\\n(.lu/8u .ti +2n .nr XR 1 .. .de MH Bell Laboratories Murray Hill, New Jersey 07974 .. .de RT \" reset params to normal state .ce 0 .ul 0 .ti 0 .bd 1 .if !"\\n(.z"" \!.bd 1 .if \\n(IP .in -\\n(IQn .if \\n(IP .nr IP -1 .ft 1 .if \\n(AJ=0 .ps \\n(PS .if \\n(AJ=0 .vs \\n(VSp .RZ .fi .. .de SH \" (unnumbered) section heading .RT .ne 3 .SP 1 .ft 3 .ce 1000 .nr XR 1 .nr HS 1 .. .de B .nr PQ \\n(.f .if t .ft 3 .if "\\$1"" .if n .ul 1000 .if !"\\$1"" .if n .ul 1 .if t .if !"\\$1"" \\$1\\f\\n(PQ\\$2 .if n .if \\n(.$=1 \\$1 .if n .if \\n(.$>1 \\$1\\c .if n .if \\n(.$>1 \\&\\$2 .. .de I .nr PQ \\n(.f .if t .ft 2 .if "\\$1"" .if n .ul 1000 .if !"\\$1"" .if n .ul 1 .if t .if !"\\$1"" \\$1\\f\\n(PQ\\$2 .if n .if \\n(.$=1 \\$1 .if n .if \\n(.$>1 \\$1\\c .if n .if \\n(.$>1 \\&\\$2 .. .so /usr/share/tmac/tmac.srefs .rm CS CE .de UX .ie \\n(GA>0 \s-2UNIX\s0\\$1 .el \{\ .if n UNIX\\$1* .if t UNIX\\$1\\f1\(dg\\fP .FS .if n *UNIX .if t \(dgUNIX is a Trademark of Bell Laboratories .FE .nr GA 1\} ..