image_name,s,a,,,,"image to be edited"
xcoord,i,a,,,,"x coordinate of pixel to be edited"
ycoord,i,a,,,,"y coordinate of pixel to be edited"
new_value,r,a,,,,"new value for pixel"
boxsize,i,h,3,,,"size of subraster surrounding pixel"
ksigma,r,h,2.5,,,"pixel rejection threshold"
edit_image,b,h,yes,,,"edit the image"
verbose,b,h,yes,,,"print subraster and median value"