As your research project progresses you will quickly gather more and more data. These need to be managed in such a way that they can be accesses and reviewed readily. Your will have primary data index codes and memos. The qualitative analysis software will retrieve and display all or any of these individually in specified groups or clusters and will indicate cross references or links between them. Some more powerful software incorporates a linked window system whereby the selection of a unit of text from the primary document results in the automatic display of its code any memos associated with it and the text of cross references from other primary documents. Systems closure is often also available whereby your notes and memos are themselves open to the same search and retrieve procedures as the primary documents.