WOB is designed to be part of a virtual university. The approach is example-oriented and experimental. The emphasis is on examples that are application-oriented. The current version WOB99 is a test version with a selection of 15 examples. For comments please contact the editor .
Suggestions are most welcome.
It is planned to extend WOB into several directions. Additional parts are in preparation. WOB includes figures in postscript format. The figures may be downloaded and used if proper reference is made. The same holds for the tutorials.