pmiget,'C:\pmidata\000811\Hbeta\H4_004.pmi',h,img
pmiget,'C:\pmidata\000811\Hbeta\H4bdark.pmi',hd,drk
sbtdrk,h,img,hd,drk
pmiget,'C:\pmidata\000811\Hbeta\H4bflat.pmi',hf,flt
sbtdrk,hf,flt,hd,drk
devflt,h,img,hf,flt
tvscl,img