jeeb.lib (Just Enough Elements for Biomodelling) is an AMAP library in Java. The AMAP developers can share interesting tools within the lab through this library. It contains several packages, including :
Capsis relies on a package named ext/jeeb-util.jar in which some of these features are bundled. This is why you may find imports related to jeeb.lib.* at the top of the classes.
A complete documentation (javadoc) for Capsis, including the jeeb classes, is available (needs you to login on the amap-dev server with your Capsis/SVN login) for the Capsis developers and modellers at this location. [EDIT: broken link fc-2.2.2016]