Syntax
=====

.. code-block:: text

    function_table = GENE_ACCE_SEISME (
        ◇ INIT_ALEA = int,
        ◇ TITRE = text,
        ◇ INFO =/1 (by default),
                 /2,
        ◆ PAS_INST = float,
        ◇ NB_POIN = int,
        ◆ PESANTEUR = float,
        ◆ DUREE_PHASE_FORTE = float,
        ◇ NB_TIRAGE = int (default: 1),
        ◇ FREQ_CORNER = float,
        ◇ FREQ_FILTRE = float,
        ◇ FREQ_FILTRE_ZPA = float,
        ◇ FREQ_PENTE = float,
          /COEF_CORR = float,
        ◇/MATR_COHE = _F (
               ◆ MAILLAGE = mesh,
               ◆ GROUP_NO_INTERF = grno,
               ◆ TYPE =/"MITA_LUCO ",
                        /"ABRAHAMSON ",
                        /"ABRA_ROCHER ",
                        /"ABRA_SOLMOYEN ",
               # If: equal_to ('TYPE', 'MITA_LUCO')
                   ◆ VITE_ONDE = float,
                   ◇ PARA_ALPHA = float (default: 0.1),
            ),
          /PHASE = _F (
               ◆ MAILLAGE = mesh,
               ◆ GROUP_NO_INTERF = grno,
               ◆ DIRECTION = float,
               ◆ VITE_ONDE = float,
               ◇ COOR_REFE = float,
            ),
        # If: exists ('COEF_CORR') and exists ('SPEC_FRACTILE')
            ◇ RATIO_HV = float,
        ◆/DSP = _F (
               ◆ AMOR_REDUIT = float,
               ◆ FREQ_FOND = float,
            ),
          /SPEC_MEDIANE = _F (
               ◆ SPEC_OSCI = function,
               ◆ AMOR_REDUIT = float,
               ◇/FREQ_PAS = float,
                 /LIST_FREQ = listr8,
               ◇ NB_ITER = int,
               ◇ ERRE_ZPA = float (default: (1.0, 0.2)),
               ◇ ERRE_MAX = float (default: (0.5, 0.2)),
               ◇ ERRE_RMS = float (default: (0.5, 0.2)),
               ◇ METHODE =/"NIGAM ",
                           /"HARMO" (by default),
            ),
          /SPEC_MOYENNE = _F (
               ◆ SPEC_OSCI = function,
               ◆ AMOR_REDUIT = float,
               ◇/FREQ_PAS = float,
                 /LIST_FREQ = listr8,
               ◇ NB_ITER = int,
               ◇ ERRE_ZPA = float (default: (1.0, 0.2)),
               ◇ ERRE_MAX = float (default: (0.5, 0.2)),
               ◇ ERRE_RMS = float (default: (0.5, 0.2)),
               ◇ METHODE =/"NIGAM ",
                           /"HARMO" (by default),
            ),
          /SPEC_UNIQUE = _F (
               ◇ ERRE_ZPA = float (default: (1.0, 0.2)),
               ◇ ERRE_MAX = float (default: (0.5, 0.2)),
               ◇ ERRE_RMS = float (default: (0.5, 0.2)),
               ◆ SPEC_OSCI = function,
               ◆ AMOR_REDUIT = float,
               ◇/FREQ_PAS = float,
                 /LIST_FREQ = listr8,
               ◇ NB_ITER = int,
               ◇ METHODE =/"NIGAM ",
                           /"HARMO" (by default),
            ),
          /SPEC_FRACTILE = _F (
               ◆ SPEC_OSCI = function,
               ◆ SPEC_1_SIGMA = function,
               ◆ AMOR_REDUIT = float,
               ◇/FREQ_PAS = float,
                 /LIST_FREQ = listr8,
            ),
        # If: exists ('DSP')
            ◆ MODULATION = _F (
                 ◆ TYPE =/"GAMMA ",
                          /"JENNINGS_HOUSNER ",
                          /"CONSTANT ",
                 ◇/ACCE_MAX = float,
                   /INTE_ARIAS = float,
                   /ECART_TYPE = float,
                 # If: equal_to ('TYPE', 'GAMMA')
                     ◆ INST_INI = float,
              ),
        # If: not exists ('DSP')
            ◆ MODULATION = _F (
                 ◆ TYPE =/"GAMMA ",
                          /"JENNINGS_HOUSNER ",
                          /"CONSTANT ",
                 # If: equal_to ('TYPE', 'GAMMA')
                     ◆ INST_INI = float,
              ),
    )
    
    ◆: mandatory
    ◇: optional
    : present by default
    &: together
    /: only one among
    |: several possible choices