2. Syntax

/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