(a) Yes, these options (AFAIU) are only used for the Potrace command-line application. In Inkscape, we just use the API function that converts a bitmap (i.e., an array of pixels rather than a drawing in real-world units) into vector objects using the same scale.
(a) Yes, these options (AFAIU) are only used for the Potrace command-line application. In Inkscape, we just use the API function that converts a bitmap (i.e., an array of pixels rather than a drawing in real-world units) into vector objects using the same scale.