Fill Hole reference

Fill Hole closes an opening in a T-Spline body.

Design > Form > Modify > Fill Hole fill hole icon

T-Spine Edge

Enables the selection of a T-Spline edge that lies along the border of the hole.

Fill Hole Mode

Weld Center Vertices

Available when the mode is set to collapse. Welds the vertices at the center.

Maintain Crease Edges

Keeps any creased edges when filling the hole.