image,s,a,,,,Image to make or modify
option,s,a,,"make|replace|add|multiply",,Editing option
value,r,a,,,,Mean pixel value
slope,r,h,0.,,,Slope of pixel values
sigma,r,h,0.,0.,,Noise sigma
seed,i,h,0,0,,Seed for noise generator

ndim,i,a,,1,7,Number of dimensions
dims,s,a,,,,Image dimensions
pixtype,s,h,"real","short|real",,Pixel datatype