I know, I know: the first question you’re probably thinking is why not just use Microsoft Word?
After all, Word files are the de-facto standard, and your professor (or hopefully in the future, the judge) will expect you to turn in your brief as a Word document or a PDF file.
While Microsoft Word is great for letters and short documents, if you try to jump around in a longer document, you’ll quickly get frustrated. God help you if you need to re-arrange different sections of text. Word works in a linear fashion: you view your entire document from start to finish, in the same manner you would view a printed paper. It just isn’t designed for crafting longer documents with multiple sections, nor is it designed to allow you to easily bounce between multiple sections of a document at the same time
On the other hand, Scrivener is purpose built for long-form writing. Authors of all types rave about Scrivener, and it’s beginning to catch on in the legal community.