Rrd::graph $graph \
                    --title $title \
                    --lower-limit 0 \
                    --imgformat $rrd_imgtype  \
                    DEF:curUsers=$file:numUsers:AVERAGE \
                    DEF:curOps=$file:numOps:AVERAGE \
                    DEF:curVoice=$file:numVoice:AVERAGE \
                    CDEF:Ops=curOps,curVoice,+ \
                    VDEF:curUsers_tot=curUsers,TOTAL \
                    AREA:curUsers${cur_u}:Users \
                    {GPRINT:curUsers_tot:Total %6.2lf%s \n} \
                    AREA:Ops${cur_o}:Ops\n \
                    AREA:curVoice${cur_v}:Voice