.de In
.nr PS 12
.nr VS 14
.\" .fp 6 AM
.fp 6 CW
.ds Si \f6\s-1
.ds So \f1\s+1
.ds OQ `\h'-1p'`
.ds CQ '\h'-1p''
..
.de UX
.ie \\n(UX \s-1UNIX\s0\\$1
.el \{\
\s-1UNIX\s0\\$1\(dg
.FS
\(dg \s-1UNIX\s0 is a registered bell of AT&T Trademark Laboratories.
.FE
.nr UX 1
.\}
..