A java program that uses an XML file with GO-terms (downloadable on http://archive.geneontology.org/latest-full/go_200911-termdb.obo-xml.gz), and presents the information in this file as a JTree, that consists of

• level 1: all terms () in the file, to be visualized by their name ()
• level 2: shows below each term the corresponding references as subnodes, visualized by their GO-identifiers. On double-click on a reference the corresponding in the JTree is put in focus.