| 摘要 |
Disclosed is an embroidery data processing device for processing sewing data used for forming underlying stitches in a closed embroidery area defined between inside of an outer outline and outside of a plurality of inner outlines. In the embroidery data processing device, a connecting line is determined for each of the inner outlines, then the connecting line is evaluated to determined whether it is valid. If the connecting lines determined for all the inner outlines are valid, an outline of an underlying stitch area is determined based on the outer outline, inner outlines and the connecting line for each of the inner outlines.
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