Syntax
=====

.. code-block:: text

    field_no = PROD_MATR_CHAM (
        ◆ MATR_ASSE = matr_asse_depl_c/matr_asse_temp_r/matr_asse_depl_r/matr_asse_pres_c,
        ◆ CHAM_NO = cham_no,
        ◇ TITRE = text,
    )
    
    ◆: mandatory
    ◇: optional
    : present by default
    &: together
    /: only one among
    |: several possible choices