(...) Yes you have to, else you wouldn't need subparts for dittered colors. CU Bernd (22 years ago, 26-Jun-02, to lugnet.cad.dat.parts, lugnet.cad.dev)
(...) What he said... ;-) The _ONLY_ legitimate way to handle dithered colors is with a type-1 (sub)file reference. Thus, you _must_ have one separate (sub)file for each dithered color to be used in a specific pattern. (22 years ago, 25-Jun-02, to lugnet.cad.dat.parts, lugnet.cad.dev)