Syntax
=====

.. code-block:: text

    formula = DEFI_PRES_EC8 (
        ◆ Z_ FOND = float,
        ◆ RAYON = float,
        ◆ HAUT_EAU = float,
        ◆ RHO_EAU = float,
        ◆ ACCE_SP_H = float,
        ◆ ACCE_FLEX_H_N = float,
        ◆ ACCE_FLEX_V = float,
        ◆ ACCE_SP_V = float,
        ◆ ACCE_CONV_H = float,
        ◇ GRAVITE = float (default: 0.0),
        ◇ PRES_SURF_LIBR = float (default: 0.0),
        ◇ NEWMARK =/"PC+" (by default),
                    /"PC-",
        ◇ EVAL = _F (
             ◆ RHO = float,
             ◆/LIST_H = float,
               /LIST_R_FOND = float,
             ◆ LIST_EPAIS = float,
             ◇ THETA = float (default: 0.0),
             ◆ TABLE = co,
          ),
    )
    
    ◆: mandatory
    ◇: optional
    : present by default
    &: together
    /: only one among
    |: several possible choices