For most tasks, the normal Cascade editor can be used exclusively. However, Cascade users can also edit source code directly by selecting the Source Code icon in the editing interface. When selected the Source Code window opens. Once the Source Code is edited click Ok. Submit changes to update the page.
All UM Cascade sites use several generally defined CSS files, but a customizable CSS file is also placed in every website. People who are familiar with CSS can edit the site's CSS file. Because the local site's CSS file is referenced after the global CSS files, it will overwrite the global styles.