You can edit edge flow on a polygon mesh using the Edit Mesh > Edit Edge Flow option. Edit Edge Flow adjusts the position of edges to fit the curvature of the surrounding mesh.
The Edit Edge Flow Options window appears.
By default, Adjust Edge Flow is enabled and set to 1. At 0 the selected edges move to the middle of the other nearby edges, creating a flat surface.
The positions of the edges move to respect the curvature continuity of your mesh.
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