saveStop( id )
    Stops saving commands to a file path associated with a specified record
    identifier.

    Parameters
    ----------
    id: number
        Record identifier.

    Returns
    -------
    bool: boolean
        Boolean indicating whether the REPL successfully stopped saving
        evaluated commands.

    Examples
    --------
    > var id = saveStart( './path/to/file.txt' );
    > 1 + 1
    2
    > 'foo'
    'foo'
    > saveStop( id );

    See Also
    --------
    save, saveStart