Every large writing project is made up of thousands of snippets of text. In addition to the main text, there are notes you make to yourself, various revisions, perhaps alternative chapters. There might be several outlines, descriptions, pages of ideas and thoughts. A fiction writer will have extensive biographies of various characters and plot strategies, while a non-fiction writer has to deal with hundreds of resources, facts, figures, contacts, and bibliographic details. Keeping track of all that information is complicated.
Traditional word processors work in a linear style: chapter follows chapter, and you must create new documents for every new kind of information. You exchange the chaos of thousands of 3x5 notecards for the chaos of hundreds of computer files.
Since books are written in a non-linear fashion, why not a non-linear word processor? That's the core of Z-Write: it allows you to store hundreds of snippets of text in a single file.
Z-Write calls these snippets Sections, but they can be short notes, entire chapters, or revisions of your entire project. Everything is convieniently at hand, ready for browsing or editing. You can view, copy, and paste from one Section to another. You can create as many Sections as you need, and you can organize them in any manner that you'd like. Each Section can be as long as you need.
This makes the process of sorting, finding, and remembering details much easier. You can use Z-Write's Sections as a way to manage multiple versions of some writing. If you've ever tried to keep three versions of Chapter 7 in a traditional linear word processor file, you know it's not fun.