---
features:
  - |
    Added a ``label`` parameter to the :class:`.Barrier` class's constructor
    and the :meth:`~.QuantumCircuit.barrier` method which allows a user to
    assign a label to an instance of the :class:`~.Barrier` directive. For
    visualizations generated with :func:`~.circuit_drawer` or
    :meth:`.QuantumCircuit.draw` this label will be printed at the top of the
    ``barrier``.

    .. code-block::

        from qiskit import QuantumCircuit

        circuit = QuantumCircuit(2)
        circuit.h(0)
        circuit.h(1)
        circuit.barrier(label="After H")
        circuit.draw('mpl')