HTML and CSS Dashboard messages and homepages can be an excellent way to help staff navigate ETO. Hyperlinks are one of the most helpful tools in ETO dashboard messages. Many hyperlinks can also be used in ETO Results which is included at the bottom of this article.
Customer support has a couple of articles for standard HTML your organization can use in ETO.
It should be noted that Customer Support will not be able to support or troubleshoot complex custom HTML.
It should also be noted that hyperlinks can be an easy way to record bad date. The wrong form ID, response ID, or subject ID could let end users record data for the wrong person or form - testing hyperlinks and HTML thoroughly is always recommended.
HTML that uses more advanced coding languages may not be functional in ETO.