use "err620_fillmodulo.nc"

!=======================================
fill/hlim=0:450/vlim=-90:90 var1,varlon,varlat
say "that ok"

pause
!=======================================
fill/hlim=0:450/vlim=-90:90/modulo/lev=20 var1,varlon,varlat
say "that is not ok; note the lon white row at the top of the plot"

pause
polygon/over/color=blue/pattern=dark_vertical {150,400,400,150,150},{80,80,100,100,80}

pause
!=======================================
fill/hlim=0:450/vlim=-90:90/modulo/lev=40 var1,varlon,varlat
say "that is ok; the number of levels is now 40"