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In some cases with imposed Lagrangian displacements, it may be interesting to keep the node topology close to the object of interest. This can save calculation time and may increase accuracy. This can be done by defining two separate volumes and by imposing the displacement on a volume through the use of ICFD_CONTROL_IMPOSED_MOVE. The interface between the two volumes is then defined by MESH_INTERF. This is not compatible with remeshing.