.pl 7i

.fp 1 R H
.fp 2 I HI
.fp 3 B HB
.fp 4 BI HX

.nr PS 16
.nr VS 20p
.nr PD 12p

.ds CH "

.am TL
.sp 1.0i
.ps 24
.vs 28p
..
.am AU
.\"'sp 4.0i
.\".ps 14
.\".vs 20p
..


.de P
.ds CH "
.bp
\&
.sp 1.4i
.ce 1
\s+8\fB\\$1\fP\s-8
.na
..

.de S
.ds CH \s+2\f3\\$1\fP\s-2
.bp
.rs
.sp 0.6
.LP
.na
..

.de I
.if !"\\$1"" .ds BX \\$1
.if "\\$1"" .ds BX \(bu
.IP \\*(BX
..

.de CW
\&\f(CW\\$1\fP\\$2
..