def break_before_after(computer, name, value):
    """Compute the ``break-before`` and ``break-after`` properties."""
    # 'always' is defined as an alias to 'page' in multi-column
    # https://www.w3.org/TR/css3-multicol/#column-breaks
    if value == 'always':
        return 'page'
    else:
        return value