Rebel Century Online Manual
Installation
The fundamental choice is made NOT to save any changed settings of the chess program. This means in practice that if you start Rebel the program automatically plays with the strongest settings. An exception is made for the time level. This information is saved in the REBEL.BGN file.
The REBEL.CFG contains all settings that can be changed including name (and path) of the current opening books, database, piece set, PGN-directory, EPD-directory, and IECG-directory, colors, layout and the configuration of the display of games of the database and so on.