Coming three months after version 4.2, CODE (Collabora Online Development Edition) 6.4 is a major release that adds many great features, including a new, modern look with the NotebookBar, which not only saves sp`ace, but it also makes the interface easier to use and intuitive, especially for those familiar with the MS Office suite. The NotebookBar is set as default in this release and looks great with all core components, including Writer, Calc, and Impress. However, if users want to switch back to the classic interface, which won’t go away anytime soon, they can do that very easily by selecting ???classic??? for the user_interface key in the loolwsd.xml file.