A rich text editor for editing Western and Japanese documents. Supports the outline processing that allows text to be organized into discrete sections that are related in a tree structure or hierarchy. Text may be collapsed into a node, or expanded and edited. Supports powerful search and replace functions and the latest OS X features such as iCloud, Full Screen, Auto-Save, Versions and more. A new text engine has been developed in order to bring outline processing, light and smooth vertical text editing, and supports many functions which are specific to Japanese, such as genko-mode, ruby, tate-chu-yoko, kenten and so on. These features are difficult to be realized with the standard text engine NSTextView.