The seam line is the line you sew along. Between it and the cut edge lies the seam allowance.
Whether the contour in your file is the seam line or the cut edge decides everything that follows. If the paper pattern has no allowance, PatternScan Pro adds it afterwards, so the file states which of the two it holds.

Digitize sewing patterns without tracing.
Test PatternScan Pro free for 14 days with the full feature set. You need your smartphone, a printer and one pattern you always wanted digital.