# APDEFAULT lower,r,h,-5.,,,Lower aperture limit relative to center upper,r,h,5.,,,Upper aperture limit relative to center apidtable,s,h,"",,,"Aperture ID table " b_function,s,h,"chebyshev","chebyshev|legendre|spline1|spline3",,Background function b_order,i,h,1,1,,Background function order b_sample,s,h,"-10:-6,6:10",,,Background sample regions b_naverage,i,h,-3,,,Background average or median b_niterate,i,h,0,0,,Background rejection iterations b_low_reject,r,h,3.,0.,,Background lower rejection sigma b_high_reject,r,h,3.,0.,,Background upper rejection sigma b_grow,r,h,0.,0.,,Background rejection growing radius