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$$$$ ELIM     NOTICE  FANDEUR   12/12/21    21:15:01     7634           
                                             DATE     12/12/21
                                             
  Directive ELIMINATION                    Voir aussi :
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    ELIM  GEO1 (GEO2) (FLOT1) ;


    Description :
    _____________

    The ELIM instruction merges all the nodes in GEO1 the distance
    between which is smaller than FLOT1 (FLOTTANT type). If FLOT1 is
    not supplied, its value is one tenth of the current density.

    If GEO2 (MAILLAGE type) is also supplied, the elimination is only
    possible between nodes pertaining respectively to GEO1 and GEO2
    rather than within the same object. In other words, duplicate nodes
    found within either GEO1 or GEO2 are left untouched.


    Notes
    -----

    - As a consequence, all the objects which refer to those nodes, are
      modified in order to refer to the new node.
 
    - Some problems may occur when a field by point is refering to two
      nodes that have been replace by a single one. The value of the
      field at this point depend on the attribut of nature of the
      field :
      - If the nature is 'INDETERMINEE'(undetermined) an error occurs
        because it is not possible to decide.
      - If the nature is 'DIFFUS' the two values must be equal
        otherwise an error will occur.
      - If the nature is 'DISCRET' the two values are summed up.