Syntax
=====

.. code-block:: text

    /formula
    /formula_c = FORMULE (
        ◆/VALE = text,
          /VALE_C = text,
        ◆ NOM_PARA = text,
    )
    
    ◆: mandatory
    ◇: optional
    : present by default
    &: together
    /: only one among
    |: several possible choices