        para.append(runs)
    return para


def li(runs, style):
    """
    Returns a ``p`` (paragraph) with ordered or unordered list style for
    text runs.

    *runs* are a list of ``r`` (run) element, see :func:`run`.

    *style*, an string of supported list style: ``circle``, ``number``,
    ``disc``and ``square``.