13. The system, process and method of claim 1 , wherein the digits comprise binary bits and the encoder encodes the content of the given document in binary code by assigning at least one bit string of one kind to the main character strings and at least one other bit string of other kind to the auxiliary character strings.
13. The system, process and method of claim 1 , wherein the digits comprise binary bits and the encoder encodes the content of the given document in binary code by assigning at least one bit string of one kind to the main character strings and at least one other bit string of other kind to the auxiliary character strings. 14. The system, process and method of claim 13 , wherein the encoder encodes the content of the given document in binary code by assigning a single binary bit of one kind (binary 0 or 1) to each main character string and a single binary bit of the other kind (binary 1 or 0) to each auxiliary character string.