Syntax
=====
               

.. code-block:: text

    macr_elem_dyna = MACR_ELEM_DYNA (
        ◇ reuse = <objet de MACR_ELEM_DYNA >,
        ◇ MACR_ELEM_DYNA = macr_elem_dyna,
        ◆ BASE_MODALE = meca fashion,
          /MATR_RIGI = matr_asse_depl_c/matr_asse_depl_r,
        ◇/MODELE_MESURE = _F (
               ◆ FREQ = float,
               ◆ MASS_GENE = float,
               ◇ AMOR_REDUIT = float,
            ),
        ◇/MATR_IMPE = matr_asse_gene_c,
        ◇/MATR_MASS = matr_asse_depl_r,
        ◇/MATR_IMPE_MASS = matr_asse_gene_c,
        ◇/MATR_IMPE_RIGI = matr_asse_gene_c,
        ◇/MATR_IMPE_AMOR = matr_asse_gene_c,
        ◇/MATR_AMOR = matr_asse_depl_r,
          /AMOR_REDUIT = float,
        ◇/SANS_GROUP_NO = grno,
          /GROUP_NO = big,
        # If: exists (" MATR_IMPE ")
            ◆ FREQ_EXTR = float,
            ◇ AMOR_SOL = float (default: 0.0),
            ◇ MATR_IMPE_INIT = matr_asse_gene_c,
        ◇ CAS_CHARGE = _F (
             ◆ NOM_CAS = text,
             ◆/VECT_ASSE_GENE = vect_asse_gene,
               /RESU_GENE = tran_gene,
          ),
    )
    
    ◆: mandatory
    ◇: optional
    : present by default
    &: together
    /: only one among
    |: several possible choices