The World Tree app is a way for writers to organize their thoughts into a hierarchy of related ideas. Characters, Themes, Plot, World Building, and References can be organized using related key words for easy storage and retrieval. This app is a convenient way to quickly jot down ideas, and then not have to worry about those ideas getting lost in a pile of notes. Use the explore tool to print out the ideas you need, when you need them, so that you can insert them into the main text of your draft as needed.