A website development system that allows Web pages to be visually created like a desktop publishing program. It generates the required HTML code for the pages and is able to switch back and forth (in varying degrees) between the page layout and the HTML. At a high level, the software is judged by its GUI tools used for designing the page. At a low level, the clarity of HTML code that is generated determines how easily people can modify and maintain the site. Comprehensive products can read in an existing website and display it as a graphical hierarchy of pages. Such products are used to manage the site from that point forward. See content management system and HTML editor.