section "Input & Output options"
option "input" i "Input image filename" string yes
option "output" o "Output image filename" string yes
+option "like" l "Resample like this image" string no
option "size" - "Number of pixels of each coordonate" int no multiple default="0"
option "spacing" - "Spacing in mm between pixels" float no multiple default="-1.0"
option "default" d "Default pixel value" float no default = "0.0"