Syntax
=====

.. code-block:: text

    table = POST_K_BETA (
        ◆ MAILLAGE = mesh,
        ◆ MATER_REV = subdue,
        ◇ EPAIS_REV = float,
        ◇ MATER_MDB = subdue,
        ◇ EPAIS_MDB = float,
        ◆ FISSURE = _F (
             ◇ FORM_FISS =/"ELLIPSE" (by default),
                           /"SEMI_ELLIPSE ",
             # If: equal_to (" FORM_FISS ", 'ELLIPSE')
                 ◇ DECALAGE = float (default: -0.0002),
             ◆ PROFONDEUR = float,
             ◆ LONGUEUR = float,
             ◆ ORIENTATION =/"CIRC ",
                             /"LONGI ",
          ),
        ◆ K1D = _F (
             ◇ TABL_MECA_REV = table,
             ◆ TABL_MECA_MDB = table,
             ◆ TABL_THER = table,
             ◆ INTITULE = text,
          ),
        ◇ TITRE = text,
    )
    
    ◆: mandatory
    ◇: optional
    : present by default
    &: together
    /: only one among
    |: several possible choices