Decimate Mesh

Used to reduce the number of facets in a mesh by creating larger facets that approximate the original facets of the mesh.

You can access this tool from the following:

Setting	Description
Percent of Reduction	Sets the required reduction in the number of facets for the modified mesh element.
Chord Tolerance	Sets the maximum deviation from a constructed polygon to the original element.
Maintain Boundary	Retains the same boundary for the modified mesh element.

Key-in: FACET MODIFY DECIMATE