Formatting of permzbis as text.
Version of Friday 13 September 2024.

    /* S1 */ std::ostream & operator<< 
                 (std::ostream & text_out, permzbi const & p);
    /* S1 */ std::istream & operator>> 
                 (std::istream & text_in, permzbi & p);

The formatting of text input and output is explained on its own page.