Sorry to everybody. Per partition Preprocessor Filtering. The above feature is to avoid biassed results when using preprocessors in conjunction with validation set for statistic reliability. This feature is currently available under UNIX versions of billnet only. ValidationFactor option added.
Some tests have to be made to prove the implementation right.
New options to allow billnet to print to pipes instead of files with serial number. This will make billnet good for demos. Some bug fixing. It is untested but looks working. Fast variants are planned.