dxf2rsd -o tilts1.rsd -quad2 45 -back   tilts1.dxf
rsdform -o tmp1.rsd  -r 0 180 0 tilts1.rsd
copy tmp1.rsd tilts1.rsd
copy tmp.mat tilts1.mat
copy tmp.rsd tilts1.rsd
rsdlink -v -o tilts1.tmd tilts1.rsd