.TP
\fB-P\fR[\fIpidfile\fR], \fB--pidfile\fR[\fB=\fIpidfile\fR]
Causes a file (by default, \fB\*(PN.pid\fR) to be created indicating
the PID of the running process.  If \fIpidfile\fR is not specified, or
if it does not begin with \fB/\fR, then it is created in
\fB@RUNDIR@\fR.

.TP
\fB-f\fR, \fB--force\fR
By default, when \fB-P\fR or \fB--pidfile\fR is specified and the
specified pidfile already exists and is locked by a running process,
\fB\*(PN\fR refuses to start.  Specify \fB-f\fR or \fB--force\fR
to cause it to instead overwrite the pidfile.

When \fB-P\fR or \fB--pidfile\fR is not specified, this option has no
effect.

.TP
\fB-D\fR, \fB--detach\fR
Causes \fB\*(PN\fR to detach itself from the foreground session and
run as a background process.