Syntax
=====

.. code-block:: text

    nume_ddl = NUME_DDL (
        ◆/MATR_RIGI = matr_elem_pres_c/matr_elem_depl_r/matr_elem_temp_r/matr_elem_depl_c,
          /MODELE = model,
        # If: exists (" MODELE ")
            ◇ CHARGE = char_ther/char_meca/char_acou,
        ◇ INFO =/1 (by default),
                 /2,
    )
    
    ◆: mandatory
    ◇: optional
    : present by default
    &: together
    /: only one among
    |: several possible choices