2. Syntax

function = DEFI_FONC_FLUI (
    ◆ MAILLAGE = mesh,
    ◆/GROUP_NO_INIT = grno,
    ◆/GROUP_NO_FIN = grno,
    ◆ VITE = _F (
         ◇ VALE = float (default: 1.0),
         ◆ PROFIL =/"UNIFORME ",
                    /"LEONARD ",
         ◇ NB_BAV =/0 (by default),
                    /2,
                    /3,
      ),
    ◇ INTERPOL =/"LIN" (by default),
                 /"LOG ",
    ◇ PROL_DROITE =/"CONSTANT ",
                    /"LINEAIRE ",
                    /"EXCLU" (by default),
    ◇ PROL_GAUCHE =/"CONSTANT ",
                    /"LINEAIRE ",
                    /"EXCLU" (by default),
    ◇ INFO =/1 (by default),
             /2,
    ◇ TITRE = text,
)

◆: mandatory
◇: optional
: present by default
&: together
/: only one among
|: several possible choices