Syntax
=====

.. code-block:: text

    /fashion_gene
    /Fashion_meca_c
    /meca_mode = EXTR_MODE (
        ◆ FILTRE_MODE = _F (
             ◆ MODE = mode_gene/mode_meca_c/mode_meca,
             ◆/TOUT_ORDRE =/"OUI ",
                              /"NON ",
               /NUME_ORDRE = int,
               /NUME_MODE = int,
               /NUME_MODE_EXCLU = int,
               /FREQ_MIN = float,
               /CRIT_EXTR =/"MASS_EFFE_UN ",
                             /"MASS_GENE ",
                             /"MASS_EFFE ",
             # If: exists (" FREQ_MIN ")
                 ◆ FREQ_MAX = float,
                 ◇ PRECISION = float (default: 0.001),
             # If: exists (" CRIT_EXTR ")
                 ◆ | THRESHOLD = float,
                   | THRESHOLD_X = float,
                   | THRESHOLD_Y = float,
                   | Z-THRESHOLD = float,
          ),
        ◇ TITRE = text,
        ◇ IMPRESSION = _F (
             ◇ CUMUL =/"OUI ",
                       /"NON" (by default),
             ◇ CRIT_EXTR =/"MASS_EFFE_UN" (by default),
                           /"MASS_GENE ",
                           /"MASS_EFFE ",
          ),
    )
    
    ◆: mandatory
    ◇: optional
    : present by default
    &: together
    /: only one among
    |: several possible choices