Seam and hem allowances
Included or not, and how wide.
Seam and hem allowances are added for you outside the sewing line; edges on the fold and edges that are bound or neatened get none. Each design starts with the usual amounts for it (1 cm for knits and bags, 1.5 cm for woven garments; deeper hems where they suit).
Turn Add seam allowances off for a pattern of just the sewing lines, to trace and add your own when cutting.