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Create a mesh by reading on a file.

Supported file formats are: ASTER, MED,, GIBI, GMSH, and IDEAS.

Produces a mesh-like data structure.

**Important note:**

*You can check the quality of the mesh read using (following on* *LIRE_MAILLAGE, the command* *MACR_INFO_MAIL* [:external:ref:`U7.03.02 <U7.03.02>`].