{{alias}}( str )
    Decodes a string of data which has been encoded using Base64 encoding.

    Parameters
    ----------
    str: string
        Binary string containing base64-encoded data.

    Returns
    -------
    out: string
        An ASCII string containing decoded data.

    Examples
    --------
    > var out = {{alias}}( 'SGVsbG8sIHdvcmxk' )
    'Hello, world'

    See Also
    --------