images,s,a,"",,,List of CCD images to correct
ccdtype,s,h,"",,,CCD image type to correct
max_cache,i,h,0,0,,Maximum image caching memory (in Mbytes)
noproc,b,h,no,,,"List processing steps only?
"
fixpix,b,h,yes,,,Fix bad CCD lines and columns?
overscan,b,h,yes,,,Apply overscan strip correction?
trim,b,h,yes,,,Trim the image?
zerocor,b,h,yes,,,Apply zero level correction?
darkcor,b,h,yes,,,Apply dark count correction?
flatcor,b,h,yes,,,Apply flat field correction?
illumcor,b,h,no,,,Apply illumination correction?
fringecor,b,h,no,,,Apply fringe correction?
readcor,b,h,no,,,Convert zero level image to readout correction?
scancor,b,h,no,,,"Convert flat field image to scan correction?
"
readaxis,s,h,"line","column|line",, Read out axis (column|line)
fixfile,s,h,"",,,File describing the bad lines and columns
xskip1,i,h,INDEF,0,,X pixels to skip at start of overscan
xskip2,i,h,INDEF,0,,X pixels to skip at end of overscan
xtrim1,i,h,INDEF,0,,X pixels to trim at start of data
xtrim2,i,h,INDEF,0,,X pixels to trim at end   of data
ytrim1,i,h,INDEF,0,,Y pixels to trim at start of data
ytrim2,i,h,INDEF,0,,Y pixels to trim at end   of data
zero,s,h,"",,,Zero level calibration image
dark,s,h,"",,,Dark count calibration image
flat,s,h,"",,,Flat field images
illum,s,h,"",,,Illumination correction images
fringe,s,h,"",,,Fringe correction images
minreplace,r,h,1.,,,Minimum flat field value
scantype,s,h,"shortscan","shortscan|longscan",,Scan type (shortscan|longscan)
nscan,i,h,1,1,,"Number of short scan lines
"
interactive,b,h,no,,,Fit overscan interactively?
function,s,h,"legendre",,,Fitting function
order,i,h,1,1,,Number of polynomial terms or spline pieces
sample,s,h,"*",,,Sample points to fit
naverage,i,h,1,,,Number of sample points to combine
niterate,i,h,1,0,,Number of rejection iterations
low_reject,r,h,3.,0.,,Low sigma rejection factor
high_reject,r,h,3.,0.,,High sigma rejection factor
grow,r,h,0.,0.,,Rejection growing radius