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Weld
Remove creases from a mesh by merging coincident mesh vertices.
Unweld
Add creases to a smooth mesh by creating coincident vertices.
WeldEdge
Merges coincident vertices along selected unwelded mesh edges, or smooths selected creased edges in SubDs.
UnweldEdge
Add creases to a smooth mesh by creating coincident vertices along selected edges.
WeldVertices
Remove creases from a mesh by merging all selected mesh vertices.