Syntax
=====

.. code-block:: text

    /formula
    /tablecloth
    /function
    /function_c = CALC_FONC_INTERP (
        ◆ FONCTION = formula/sheet/function/function_c,
        ◆/VALE_PARA = float,
          /LIST_PARA = listr8,
        ◇ NOM_RESU = text,
        ◇ NOM_PARA = text,
        ◇ INTERPOL =/"LIN ",
                     /"LOG ",
        ◇ PROL_DROITE =/"EXCLU ",
                        /"CONSTANT ",
                        /"LINEAIRE ",
        ◇ PROL_GAUCHE =/"EXCLU ",
                        /"CONSTANT ",
                        /"LINEAIRE ",
        ◇ NOM_PARA_FONC = text,
        # If: exists (" NOM_PARA_FONC ")
            ◆/VALE_PARA_FONC = float,
              /LIST_PARA_FONC = listr8,
            ◇ INTERPOL_FONC =/"LIN ",
                              /"LOG ",
            ◇ PROL_DROITE_FONC =/"EXCLU ",
                                 /"CONSTANT ",
                                 /"LINEAIRE ",
            ◇ PROL_GAUCHE_FONC =/"EXCLU ",
                                 /"CONSTANT ",
                                 /"LINEAIRE ",
        ◇ TITRE = text,
        ◇ INFO =/1 (by default),
                 /2,
    )
    
    ◆: mandatory
    ◇: optional
    : present by default
    &: together
    /: only one among
    |: several possible choices