Syntax
=====

.. code-block:: text

    table_container = CALC_G_XFEM (
        ◇ CHAM_THETA = co,
        ◆ THETA = _F (
             ◆ FISSURE = fiss_xfem,
             ◇ NB_POINT_FOND = int,
             ◇ NUME_FOND = int (default: 1),
             ◇ & R_ INF = float,
               & R_ SUP = float,
             ◇ & R_ INF_FO = formula/sheet/function,
               & R_ SUP_FO = formula/sheet/function,
             ◇ DIRECTION = float,
          ),
        ◆ RESULTAT = evol_noli/dyna_trans/evol_elas/mode_meca,
        ◇/TOUT_ORDRE = "OUI" (or not specified),
          /NUME_ORDRE = int,
          /LIST_ORDRE = listis,
          /INST = float,
          /LIST_INST = listr8,
          /TOUT_MODE = "OUI" (or not specified),
          /NUME_MODE = int,
          /LIST_MODE = listis,
          /FREQ = float,
          /LIST_FREQ = listr8,
        # If: (exists (" INST ")) or (exists (" LIST_INST ")) or (exists (" FREQ ")) or (exists (" LIST_FREQ "))
            ◇ CRITERE =/"RELATIF" (by default),
                        /"ABSOLU ",
            # If: (equal_to (" CRITERE ", 'RELATIF'))
                ◇ PRECISION = float (default: 1e-06),
            # If: (equal_to (" CRITERE ", 'ABSOLU'))
                ◆ PRECISION = float,
        ◇ EXCIT = _F (
             ◇ CHARGE = char_meca/char_cine_meca,
             ◇ FONC_MULT = formula/tablecloth/function,
             ◇ TYPE_CHARGE = "FIXE_CSTE ",
          ),
        ◇ COMPORTEMENT = _F (
             ◆ RELATION =/"ELAS ",
                          /"ELAS_VMIS_LINE ",
                          /"ELAS_VMIS_TRAC ",
                          /"ELAS_VMIS_PUIS ",
             ◇ DEFORMATION =/"PETIT" (by default),
                             /"PETIT_REAC ",
             ◇/TOUT = "OUI" (or not specified),
               /| GROUP_MA = grma,
          ),
        ◇ ETAT_INIT = _F (
             ◆ SIGM = cham_elem/cham_no,
          ),
        LISSAGE = _F (
             ◇ LISSAGE_THETA =/"LEGENDRE" (by default),
                               /"LAGRANGE ",
             ◇ LISSAGE_G =/"LEGENDRE" (by default),
                           /"LAGRANGE ",
                           /"LAGRANGE_NO_NO ",
             # If: (equal_to (" LISSAGE_THETA ", '",' LEGENDRE ')) or (equal_to (" LISSAGE_G ",' LEGENDRE '))
                 ◇ DEGRE =/0,
                           /1,
                           /2,
                           /3,
                           /4,
                           /5 (by default),
                           /6,
                           /7,
          ),
        ◇ OPTION =/"CALC_G" (by default),
                   /"CALC_K_G ",
        # If: (exists (" COMPORTEMENT ") and (equal_to (" OPTION ", 'CALC_G')))
            ◇ CALCUL_CONTRAINTE =/"OUI" (by default),
                                  /"NON ",
        ◇ TITRE = text,
        ◇ INFO =/1 (by default),
                 /2,
    )
    
    ◆: mandatory
    ◇: optional
    : present by default
    &: together
    /: only one among
    |: several possible choices