Clooz 4 is the most significant enhancement in the program's 25-year history, continuing its rich tradition of providing a document-centric approach to family history research. Totally rewritten, Clooz 4 is full of strong features assisting researchers plan and track their efforts, record source citations, extract and analyze information content, and then export evidence to other family tree programs. Clooz 4 goes beyond researching people, supporting research subjects such as businesses, buildings, ships and artifacts. This new version provides a solid base for further expansion in the years to come. Report generation is still being developed, but there already is so much for researchers to take advantage of that a pre-release version has now been made available.