Thanks, Alex and Rainer! Thanks to you I understood and solved the problem! Regards, Diana -- Unsubscribe mailto:rrd-users-request at list.ee.ethz.ch?subject=unsubscribe Help mailto:rrd-users-request at list.ee.ethz.ch?subject=help Archive http://www.ee.ethz.ch/~slist/rrd-users WebAdmin http://www.ee.ethz.ch/~slist/lsg2.cgi