input,s,a,,,,"List of input images"
reference,s,a,"",,,"Reference image"
coords,s,a,,,,"Reference coordinates file"
shifts,s,h,"",,,"Initial shifts file"

boxsize,i,h,7,1,,"Size of the fine centering box"
bigbox,i,h,11,1,,"Size of the coarse centering box"

negative,b,h,no,,,"Are the features negative ?"
background,r,h,INDEF,,,"Reference background level"
lower,r,h,INDEF,,,"Lower threshold for data"
upper,r,h,INDEF,,,"Upper threshold for data"
niterate,i,h,3,2,,"Maximum number of iterations"
tolerance,i,h,0,0,,"Tolerance for convergence"
maxshift,r,h,INDEF,,,"Maximum acceptable pixel shift"
verbose,b,h,yes,,,"Print the centroids for every source ?"