Syntax
=====

.. code-block:: text

    function = DEFI_FONC_FLUI (
        ◆ MAILLAGE = mesh,
        ◆/GROUP_NO_INIT = grno,
        ◆/GROUP_NO_FIN = grno,
        ◆ VITE = _F (
             ◇ VALE = float (default: 1.0),
             ◆ PROFIL =/"UNIFORME ",
                        /"LEONARD ",
             ◇ NB_BAV =/0 (by default),
                        /2,
                        /3,
          ),
        ◇ INTERPOL =/"LIN" (by default),
                     /"LOG ",
        ◇ PROL_DROITE =/"CONSTANT ",
                        /"LINEAIRE ",
                        /"EXCLU" (by default),
        ◇ PROL_GAUCHE =/"CONSTANT ",
                        /"LINEAIRE ",
                        /"EXCLU" (by default),
        ◇ INFO =/1 (by default),
                 /2,
        ◇ TITRE = text,
    )
    
    ◆: mandatory
    ◇: optional
    : present by default
    &: together
    /: only one among
    |: several possible choices