Mesh Walk Delimit Edge Loop Items

SEAM:

Seam.

Delimit edge loop selection at seams.

SHARP:

Sharp.

Delimit edge loop selection at sharp edges.

NGONS:

N-gons.

Stop boundary selection at n-gons.

INNER_CORNERS:

Inner Corners.

Stop boundary selection at vertices with more than three edges.

OUTER_CORNERS:

Outer Corners.

Stop boundary selection at vertices with two edges when they share a face that is not an n-gon.