.\" Complete independent document; no previous example is required.
.nr PO .5i
.nr LL 4.7i
.nr LT 4.7i
.nr HM .55i
.nr FM .55i
.nr PS 10
.nr VS 13
.ds RH GRF-09-001
.if n .ftr CR R
.pl 8.2677i
.\" BEGIN EXAMPLE
.TL
An algebraic expression
.PP
A normalized difference can be written as:
.EQ
z = { x - mu } over sigma
.EN
.PP
A geometric length follows:
.EQ
c = sqrt { a sup 2 + b sup 2 }
.EN
.\" END EXAMPLE
.br
.sp .4v
.nf
.ps 7
\f[CR]GRF-09-001\f[]
.fi