javaBenzer. A module of the Biological ESTEEM Collection, published by the BioQUEST Curriculum Consortium. This program is intended to solve certain types of problems involving relationships between interacting data elements. In other words, it allows you to see and work with data clusters. It has been used in such diverse areas as fine-structure genetic mapping and in ecology to examine the competition between different groups of organisms and their resource requirements. Because it is written in the Java computer language, it ought to be easily run on many different hardware and software platforms. We have provided both a regular