+ * MED_V2_1 and MED_V2_2 are here for compatibility and mean respectively obsolete and MED_LATEST.
+ * MED_MINOR_0 to MED_MINOR_9 are use to specify the minor version used by MEDfichier
+ * to write MED files (major version cannot be changed).
+ * This allows backward compatibility from a newer version of SALOME to an older one:
+ * for instance, a MESH produced in SALOME 8.4 (med 3.3) can be written in med 3.2 format
+ * to be read in SALOME 8.3.