The ReduceMeshParameters type exposes the following members.
Integer from 1 to 10 telling how accurate reduction algorithm to use. Greater number gives more accurate results
If true mesh appearance is not changed even if the target polygon count is not reached
Desired or target number of faces
List of topological mesh vertices and mesh vertices that will not be moved or deleted in reduction process. Each mesh vertex will lock the corresponding topological mesh vertex. In other words it is not possible to have a locked and non-locked mesh vertex at the same location.
If true mesh is fitted to an axis aligned unit cube until reduction is complete