Syntax
=====

.. code-block:: text

    /function_c
    /function = DEFI_FONCTION (
        ◆ NOM_PARA =/"DX",
                     /"DY",
                     /"DZ",
                     /"DRX ",
                     /"DRY ",
                     /"DRZ ",
                     /"DTAN ",
                     /"TEMP ",
                     /"TSEC ",
                     /"INST ",
                     /"X",
                     /"Y",
                     /"Z",
                     /"EPSI ",
                     /"META ",
                     /"FREQ ",
                     /"PULS ",
                     /"DSP ",
                     /"AMOR ",
                     /"ABSC ",
                     /"SIGM ",
                     /"HYDR ",
                     /"SECH ",
                     /"PORO ",
                     /"SAT ",
                     /"IRRA ",
                     /"PGAZ ",
                     /"PCAP ",
                     /"PLIQ ",
                     /"PVAP ",
                     /"PAD ",
                     /"VITE ",
                     /"ENDO ",
                     /"NORM ",
                     /"EPAIS ",
                     /"EXCENT ",
                     /"NEUT1 ",
                     /"NEUT2 ",
                     /"NEUT3 ",
                     /"NEUT4 ",
                     /"XF",
                     /"YF",
                     /"ZF",
                     /"NUME_ORDRE ",
        ◇ NOM_RESU = text (default: "TOUTRESU "),
        ◆/VALE = float,
          /VALE_C = float,
          /VALE_PARA = listr8,
          /NOEUD_PARA = no,
          /ABSCISSE = float,
        # If: exists (" VALE_PARA ")
            ◆ VALE_FONC = listr8,
        # If: exists (" ABSCISSE ")
            ◆ ORDONNEE = float,
        # If: exists (" NOEUD_PARA ")
            ◆ MAILLAGE = mesh,
            ◆ VALE_Y = float,
        ◇ INTERPOL =/"LIN" (by default),
                     /"LOG ",
        ◇ PROL_DROITE =/"CONSTANT ",
                        /"LINEAIRE ",
                        /"EXCLU" (by default),
        ◇ PROL_GAUCHE =/"CONSTANT ",
                        /"LINEAIRE ",
                        /"EXCLU" (by default),
        ◇ VERIF =/"CROISSANT" (by default),
                  /"NON ",
        ◇ INFO =/1 (by default),
                 /2,
        ◇ TITRE = text,
    )
    
    ◆: mandatory
    ◇: optional
    : present by default
    &: together
    /: only one among
    |: several possible choices