2. Syntax

ENGENDRE_TEST (
    ◇ UNITE = unit (default: 8),
    ◇ FORMAT =/"ASTER" (by default),
               /"OBJET ",
    ◇ FORMAT_R = text (default: "1 PE20 .13"),
    ◇ PREC_R = text (default: "1.E-10"),
    # If: equal_to (" FORMAT ", 'ASTER')
        ◆ CO = result/table/cham_gd,
        ◇ TYPE_TEST =/"SOMME ",
                      /"SOMM_ABS" (by default),
                      /"MAX ",
                      /"MIN ",
    # If: equal_to (" FORMAT ", 'OBJET')
        ◆/TOUT = "OUI" (or not specified),
          /CO = data structure,
        ◇ TYPE_TEST = "SOMME ",
)

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