2. Syntax

IMPR_CO (
    ◇ UNITE = unit (default: 8),
    ◇ NIVEAU =/-1,
               /0,
               /1,
               /2 (by default),
    ◇ ATTRIBUT =/"NON" (by default),
                 /"OUI ",
    ◇ CONTENU =/"NON ",
                /"OUI" (by default),
    ◇ BASE =/"",
             /"G" (by default),
             /"V",
             /"L",
    ◆/CONCEPT = _F (
           ◆ NOM = data structure,
        ),
      /CHAINE = text,
      /TOUT = "OUI" (or not specified),
    ◇ POSITION = int (default: 1),
    # If: equal_to (" NIVEAU ", -1)
        ◇ PERMUTATION =/"NON ",
                        /"OUI" (by default),
)

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