But === Create the cracked mesh of a structure using the X- FEM method. This operator produces a new mesh by adding meshes in order to follow the location of the crack described by the level sets. In this way, you "mesh" the crack. This mesh will only be used for visualization purposes and should not be used for a calculation. Produces a mesh_sdaster concept. This concept is essential for operator POST_CHAM_XFEM [:external:ref:`U4.82.22 `].