If your publication page has a PDF, your publication page will show a "View PDF" button. For a while, that is the only button that can appear on publication pages.

However, sometimes you want to show other buttons that link to other content related to the publication, such as a code repository, a video, slides, etc.

Now, you can do that in the Owlstown editor. Here's what the user interface looks like.

This feature is also available for project pages, course pages, and people pages.