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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.
WeldVertices
Remove creases from a mesh by merging all selected mesh vertices.
UnweldVertex
Unweld selected 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.