Syntax
=====

.. code-block:: text

    interspectrum = GENE_FONC_ALEA (
        ◆ INTE_SPEC = interspectrum,
        ◇ NUME_VITE_FLUI = int,
        ◇ INTERPOL =/"NON ",
                     /"OUI" (by default),
        # If: equal_to (" INTERPOL ", 'OUI')
            ◇ DUREE_TIRAGE = float,
            ◇ FREQ_INIT = float,
            ◇ FREQ_FIN = float,
        ◇ NB_POIN = int,
        ◇ NB_TIRAGE = int (default: 1),
        ◇ INIT_ALEA = int,
        ◇ INFO =/1 (by default),
                 /2,
        ◇ TITRE = text,
    )
    
    ◆: mandatory
    ◇: optional
    : present by default
    &: together
    /: only one among
    |: several possible choices