After installing this package, in addition to the /usr/doc/xen-*/README file;
the Xen User Manual is installed as /usr/doc/xen-*/html.

Before Xen can be used, xenstored, xenconsoled and xenbackendd services must
be started with the rc.xencommons script. You may wish to add these lines to
/etc/rc.d/rc.local to start this service after booting from your Xen kernel:

if [ -d /proc/xen ]; then
  if [ -x /etc/rc.d/rc.xencommons ]; then
    echo "Starting XEN commons:  /etc/rc.d/rc.xencommons"
    /etc/rc.d/rc.xencommons start
  fi
  if [ -x /etc/rc.d/rc.xendomains ]; then
    echo "Starting XEN domains:  /etc/rc.d/rc.xendomains"
    /etc/rc.d/rc.xendomains start
  fi
fi

You may also add these lines to /etc/rc.d/rc.local_shutdown:

if [ -d /proc/xen ]; then
  if [ -x /etc/rc.d/rc.xendomains ]; then
    echo "Stopping XEN domains:  /etc/rc.d/rc.xendomains"
    /etc/rc.d/rc.xendomains stop
  fi
  if [ -x /etc/rc.d/rc.xencommons ]; then
    echo "Stopping XEN commons:  /etc/rc.d/rc.xencommons"
    /etc/rc.d/rc.xencommons stop
  fi
fi

Remember to give executable permission to /etc/rc.d/rc.local_shutdown:

  chmod 0755 /etc/rc.d/rc.local_shutdown