Dear All I am also a Java developmer, I am impressed of your site. May I ask you the following question: In your JavaDoc of the API. How did you group the packages with different headers? What are the params to javadoc to do that? Best Regards -- Jan Burse EAWAG, SIAM CB-B33 Scheuchzerstr. 67 Überlandstr. 133 8006 Zürich 8600 Dübendorf tel: +41-1-364 17 66 tel: +41-1-823 55 34