input, f, a, "", , ,		input image name
#output, f, a, "", , ,		output file name
lower, r, a, 0.01, 0, 1,	lower limit of the usable histogram
upper, r, a, 0.99, 0, 1,	upper limit of the usable histogram
nbins, i, a, 1000, 1, ,		number of bins in the histogram

hmin, r, h, , , ,	output minimal pixel value of the usable histogram
hmax, r, h, , , ,	output maximal pixel value of the usable histogram

mode, s, h, "al"