What is the fine-grained topic of the following text: Changing this with Ultimate Branding isn't going to work how we want, first, because "Done" is going to appear on your site a lot, and we don't want it to always say "Next Unit" instead, and second, because even just in the context of Course Press, you would want the end of the last unit in a course to keep the "done" label, I assume. Only return the topic.
Customizing website elements with Ultimate Branding in the context of Course Press