This a small package of pc tools based on a bit parity utilization routine . Consists of mdiff a file compare utility that uses bit parity hashing in determining difference Between two files , boc a file Fingerprint generator that creates a binary file that maintains bit parity and byte order source file data in order to compare them after file restore or transfer and e1173 a byte order compression routine a compression tool that perform fast compression of large ASCII files on the same byte order parity principia .