The plate
traced line
line a correction added
region, as extracted
the chosen region
moved by the recut
printed label, its line and where it seeds
… moved by an earlier correction
Your marks
Seed + · the region is here
Seed − · it is not here
Boundary · a line the tracing missed
Extent + · the outline it should have
Extent − · area it should not have
Leader · a label's line, moved