LZ 77 encoding
Original method of sliding window designed in 1977 by Abrahamem Lempel and Jacob
Ziv. This method uses window divided to coded part and view.
Size of coded part is usually 8192 bits and size of view about
10 to 20 bits. In demonstration both parameters could be set.
Demonstration of this algorithm is in followig applet or could be executed
as application by 77en.jnlp in application directory.