While working on a large text body, finding a clear structure is the hardest part. You don’t name, rename, order and reorder your chapters because your app or your perfectionism requires it.
You do it because you need to clear your mind and find the right structure for what you want to say. Organizing your files is work, but it’s essential work that your book or thesis will grow from. With iA Writer 7.2, structuring large writing projects has become a lot easier.
https://ia.net/topics/faster-filing-with-tree-view-a-step-forward-for-large-writing-projects