Syntax
=====

.. code-block:: text

    table = DEFI_SOL_EQUI (
        ◇ LIEU_SIGNAL =/"AFFLEURANT" (by default),
                        /"CHAMP_LIBRE ",
        ◇ CHARGEMENT =/"MONO_APPUI" (by default),
                       /"ONDE_PLANE ",
        # If: equal_to (" CHARGEMENT ", 'ONDE_PLANE')
            ◆/FONC_SIGNAL = function,
              /UNITE_TRAN_INIT = unit,
              /FONC_SIGNAL_X = function,
            ◇ & FONC_SIGNAL_Y = function,
              & FONC_SIGNAL_Z = function,
              & GROUP_MA_ARRETE_1 = grma,
              & GROUP_MA_ARRETE_2 = grma,
            ◇ TOUT_CHAM =/"OUI" (by default),
                          /"NON ",
            ◇/LIAISON =/"PERIODIQUE ",
                          /"SANS ",
            ◇ MASS_PENA = float,
            ◇ LONG_CARA = float,
            ◇ NOM_CMP =/"DX" (by default),
                        /"DY",
            # If: exists (" FONC_SIGNAL_X ")
                ◆ MAILLAGE = mesh,
            # If: not exists (" FONC_SIGNAL_X ")
                ◇ MAILLAGE = mesh,
            # If: not exists (" GROUP_MA_ARRETE_1 ")
                ◇ CORRECTION =/"BYRNE ",
                               /"SANS" (by default),
                # If: equal_to (" CORRECTION ", 'BYRNE')
                    ◇ COEF_KSI = float (default: 0.666666667),
        # If: equal_to (" CHARGEMENT ", 'MONO_APPUI')
            ◆/FONC_SIGNAL = function,
              /DSP = function,
              /FONC_SIGNAL_X = function,
            ◇ & FONC_SIGNAL_Y = function,
              & FONC_SIGNAL_Z = function,
              & GROUP_MA_ARRETE_1 = grma,
              & GROUP_MA_ARRETE_2 = grma,
            # If: exists ('DSP')
                ◆ DUREE = float,
                ◆ UNITE_RESU_DSP = unit,
            ◇ NOM_CMP =/"DX" (by default),
                        /"DY",
            ◇ TOUT_CHAM =/"OUI ",
                          /"NON" (by default),
            # If: exists (" FONC_SIGNAL_X ")
                ◆ MAILLAGE = mesh,
            # If: not exists (" FONC_SIGNAL_X ")
                ◇ MAILLAGE = mesh,
            # If: not exists (" GROUP_MA_ARRETE_1 ")
                ◇ CORRECTION =/"BYRNE ",
                               /"SANS" (by default),
                # If: equal_to (" CORRECTION ", 'BYRNE')
                    ◇ COEF_KSI = float (default: 0.666666667),
        ◇ CORR_AMOR =/"OUI ",
                      /"NON" (by default),
        ◇ LIST_FREQ_SPEC_OSCI = listr8,
        ◇ LIST_FREQ = listr8,
        ◇ MAILLAGE = mesh,
        ◇ & GROUP_MA_DROITE = grma,
          & GROUP_MA_GAUCHE = grma,
        ◆ GROUP_MA_SUBSTR = Grma,
        ◆ GROUP_MA_COL = Grma,
        ◇ COEF_VARI_MATE = float (default: 1.0),
        ◇ COEF_AMPL_ACCE = float (default: 1.0),
        ◇ COEF_GAMMA = float (default: 0.65),
        ◇ NMAX_ITER = int (default: 10),
        ◇ RESI_RELA = float (default: 0.05),
        ◇ FREQ_COUP = float,
        ◇ FREQ_FILTRE = float,
        ◇ INTEGRATION =/"TEMPS" (by default),
                        /"FREQUENCE ",
        ◇ SURF =/"OUI ",
                 /"NON" (by default),
        # If: equal_to (" SURF ", 'NON')
            ◆ NIVE_COUCH_ENFO = int,
            ◇ NB_RECEPTEUR =/2 (by default),
                             /4,
        ◇ UNITE_TABLE_RESU = unit,
        ◇ UNITE_RESU_TRAN = unit (default: 40),
        ◇ UNITE_RESU_SPEC = unit (default: 55),
        ◇ & TABLE_MATER_ELAS = table,
          & TABLE_GEQUI_GMAX = table,
          & TABLE_AMOR_EQUI = table,
        ◇ SEPARATEUR = text (default: ""),
        ◇ LIST_EPSI = listr8,
        # If: not exists (" TABLE_MATER_ELAS ")
            ◇ MATERIAU = _F (
                 ◆ GAMMA = float,
                 ◆ G_ GMAX = float,
                 ◆ D = float,
              ),
            ◇ COUCHE = _F (
                 ◆ EPAIS = float,
                 ◆ GROUP_MA = Grma,
                 ◆ E = float,
                 ◆ NU = float,
                 ◆ RHO = float,
                 ◆ AMOR_HYST = float,
                 ◆ NUME_MATE = int,
                 ◇ N1 = float,
              ),
        ◇ TITRE = text,
        ◇ INFO =/1 (by default),
                 /2,
    )
    
    ◆: mandatory
    ◇: optional
    : present by default
    &: together
    /: only one among
    |: several possible choices