import textwrap


def _format_arguments_usage(options):
    """Construct the Arguments-part of the usage text."""
    argument_usage = ""
    for op in options:
        if op.arg and op.arg_description:
            wrapped_description = textwrap.wrap(op.arg_description,
                                                width=79,
                                                initial_indent=' ' * 12,
                                                subsequent_indent=' ' * 12)
            wrapped_description = "\n".join(wrapped_description).strip()
            argument_usage += "  {0:8}  {1}\n".format(op.arg,
                                                      wrapped_description)
    return argument_usage