+.SH POWER MANAGEMENT
+Modern X servers contain support to power down the monitor after an idle
+period. If the monitor has powered down, then \fIxscreensaver\fP will
+notice this, and will not waste CPU by drawing graphics demos on a black
+screen. An attempt will also be made to explicitly power the monitor
+back up as soon as user activity is detected.
+
+If your X server supports power management, then
+.BR xset (1)
+will accept a \fBdpms\fP option. So, if you wanted \fIxscreensaver\fP
+to activate after 5 minutes, but you wanted your monitor to power down
+after one hour (3600 seconds) you would do this:
+.EX
+xset dpms 3600
+.EE
+See the man page for the
+.BR xset (1)
+program for details. (Note that power management requires both software
+support in the X server, and hardware support in the monitor itself.)