{{alias}}( str )
    Capitalizes the first letter of each word in an input `string`.

    Parameters
    ----------
    str: string
        Input string.

    Returns
    -------
    out: string
        String containing words where each first letter is capitalized.

    Examples
    --------
    > var out = {{alias}}( 'beep boop' )
    'Beep Boop'

    See Also
    --------