option "input" i "Input image filename" string yes
option "output" o "Output texte filename" string yes
-option "point1" f "First point (mm)" double yes multiple(-4)
-option "point2" s "Second point (mm)" double yes multiple(-4)
+option "point1" f "First point (vox)" double yes multiple(-4)
+option "point2" s "Second point (vox)" double yes multiple(-4)