To have things more faster and easier than previous versions, the real-time update thus was added in.
Once a website is completed, users may see a small misspelling or update a slight change of information which doesn't need program to run updating the whole website.

But in case they come to edit almost the whole of a page, they may need to make a copy of that page (duplicate function) and edit on the copied one. While the current page is still online with the same content, this page will not go anywhere to be seen until the user mark it as a main page by using Menu management. This is also why we have separated menu/navigation bar setting to be more functions.