Merges the vertices of selected mesh faces or edges.
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You can cause the vertices of surrounding mesh faces to converge at the center of a selected edge or face. The shapes of surrounding faces change to accommodate the loss of one or more vertices.

The following prompts are displayed.
- Select mesh face or edge to collapse
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Specifies a mesh edge or a face whose midpoint becomes the point of convergence for the surrounding faces. Click a single mesh edge or face.