Syntaxe
=======

.. code-block:: text

    / matr_elem_pres_c
    / matr_elem_depl_r
    / matr_elem_temp_r
    / matr_elem_depl_c = CALC_MATR_ELEM(
        ◆ OPTION = / "RIGI_MECA",
                   / "MASS_MECA",
                   / "RIGI_GEOM",
                   / "MASS_THER",
                   / "AMOR_MECA",
                   / "RIGI_THER",
                   / "IMPE_MECA",
                   / "ONDE_FLUI",
                   / "MASS_FLUI_STRU",
                   / "RIGI_FLUI_STRU",
                   / "RIGI_ROTA",
                   / "MECA_GYRO",
                   / "RIGI_GYRO",
                   / "MASS_MECA_DIAG",
                   / "RIGI_ACOU",
                   / "MASS_ACOU",
                   / "AMOR_ACOU",
                   / "RIGI_MECA_HYST",
        ◆ MODELE = modele,
        ◇ INST = float,
        # Si: equal_to("OPTION", 'RIGI_MECA')
            ◇ GROUP_MA = grma,
            ◇ CHAM_MATER = cham_mater,
            ◇ CARA_ELEM = cara_elem,
            ◇ MODE_FOURIER = int,
            ◇ CHARGE = char_meca,
            ◇ CALC_ELEM_MODELE = / "OUI" (par défaut),
                                 / "NON",
        # Si: (equal_to("OPTION", 'MASS_MECA')) or (equal_to("OPTION", 'MASS_MECA_DIAG'))
            ◇ GROUP_MA = grma,
            ◇ CHAM_MATER = cham_mater,
            ◇ CARA_ELEM = cara_elem,
            ◇ CHARGE = char_meca,
        # Si: equal_to("OPTION", 'RIGI_GEOM')
            ◇ GROUP_MA = grma,
            ◆ SIEF_ELGA = cham_elem,
            ◇ CARA_ELEM = cara_elem,
            ◇ STRX_ELGA = cham_elem,
            ◇ DEPL = cham_no,
            ◇ CHAM_MATER = cham_mater,
            ◇ MODE_FOURIER = int,
        # Si: equal_to("OPTION", 'RIGI_ROTA')
            ◆ CHAM_MATER = cham_mater,
            ◇ CARA_ELEM = cara_elem,
            ◆ CHARGE = char_meca,
        # Si: equal_to("OPTION", 'MECA_GYRO')
            ◆ CHAM_MATER = cham_mater,
            ◇ CARA_ELEM = cara_elem,
            ◇ CHARGE = char_meca,
            ◇ GROUP_MA = grma,
        # Si: equal_to("OPTION", 'RIGI_GYRO')
            ◆ CHAM_MATER = cham_mater,
            ◇ CARA_ELEM = cara_elem,
            ◇ CHARGE = char_meca,
            ◇ GROUP_MA = grma,
        # Si: equal_to("OPTION", 'AMOR_MECA')
            ◇ GROUP_MA = grma,
            ◇ CARA_ELEM = cara_elem,
            ◇ CHAM_MATER = cham_mater,
            ◇ RIGI_MECA = matr_elem_depl_r,
            ◇ MASS_MECA = matr_elem_depl_r,
            ◇ CHARGE = char_meca,
            ◇ AMOR_FLUI = / "OUI" (par défaut),
                          / "NON",
            ◇ VNOR = / 1.0 (par défaut),
                     / -1.0,
            ◇ TYPE_AMOR = / "TOUT" (par défaut),
                          / "ABSO",
            # Si: equal_to("TYPE_AMOR", ('TOUT'))
            # Si: equal_to("TYPE_AMOR", 'ABSO')
        # Si: equal_to("OPTION", 'RIGI_MECA_HYST')
            ◇ GROUP_MA = grma,
            ◇ CHARGE = char_meca,
            ◇ CHAM_MATER = cham_mater,
            ◇ CARA_ELEM = cara_elem,
            ◆ RIGI_MECA = matr_elem_depl_r,
        # Si: equal_to("OPTION", 'RIGI_THER')
            ◆ CHAM_MATER = cham_mater,
            ◇ CARA_ELEM = cara_elem,
            ◇ MODE_FOURIER = int,
            ◇ CHARGE = char_ther,
        # Si: equal_to("OPTION", 'MASS_THER')
            ◆ CHAM_MATER = cham_mater,
            ◇ CARA_ELEM = cara_elem,
        # Si: equal_to("OPTION", 'RIGI_ACOU')
            ◆ CHAM_MATER = cham_mater,
            ◇ CHARGE = char_acou,
        # Si: (equal_to("OPTION", 'MASS_ACOU')) or (equal_to("OPTION", 'AMOR_ACOU'))
            ◆ CHAM_MATER = cham_mater,
            ◇ CHARGE = char_acou,
            # Si: (equal_to("OPTION", 'AMOR_ACOU'))
                ◇ VNOR = / 1.0 (par défaut),
                         / -1.0,
        # Si: equal_to("OPTION", 'RIGI_FLUI_STRU')
            ◆ CARA_ELEM = cara_elem,
            ◆ CHAM_MATER = cham_mater,
            ◆ CHARGE = char_meca,
        # Si: equal_to("OPTION", 'MASS_FLUI_STRU')
            ◇ GROUP_MA = grma,
            ◆ CARA_ELEM = cara_elem,
            ◆ CHAM_MATER = cham_mater,
            ◆ CHARGE = char_meca,
        # Si: (equal_to("OPTION", 'IMPE_MECA')) or (equal_to("OPTION", 'ONDE_FLUI'))
            ◆ CHAM_MATER = cham_mater,
            ◇ GROUP_MA = grma,
            ◇ CHARGE = char_meca,
            # Si: (equal_to("OPTION", 'IMPE_MECA'))
                ◇ VNOR = / 1.0 (par défaut),
                         / -1.0,
    )
    
    ◆ : obligatoire
    ◇ : optionnel
    ⟐ : présent par défaut
    & : ensemble
    / : un seul parmi
    | : plusieurs choix possibles