
The subdirectories DOS and Atari contain Utilities for Chessbase.
CBFresh replaces the function "Compress .CBF" in the menu "Options".
This program offers function for physically deleting virtuelly
deleted games, simply deleting games, and optimizimg the games file.
Of course it reorganizes the keys, too.

KEY_CKO converts keys files from ChessBase 2.x to ChessBase 3.0,
CKO_KEY converts the other way. On the Atari KEY_CKO contains both
functions.

Starting the utilities: after starting CBFresh, the programs offers a
menu for choosing the different options. With Atari, KEY_CKO works in
the same way. With DOS-computers KEY_CKO and CKO_KEY need the keys
file to convert as parameter, e.g. "key_cko mainbase" or 
"cko_key cbs\openings\ruylopez".
