! On the fly mode 
! Resol: big map 33'x 33' for extended sources, at the limit possibilities
! in terms of speed, resolution, inegration time and file size
! attention: time expensive
!
OTFMAP -1000 -1000 1000 -1000 - ! offsets at start and end of first otf subscan
  /system truehorizon - ! projection AzEl is used to define the map
  /zigzag - ! go back and forth
  /step 0 60 - ! steps between subscans in arcsecond (= 0.17 samples / HPBW_convol 1mm)
  /notf 34 - ! number of subscans
  /totf 40 - ! time of a subscan (50"/s)
  /reference no ! no off-source reference subscan

SAY "OTFMAP 2000''x 2000'' (step 60) in 34 subscan x 40 s = 23+3 ~= 26 min."