That’s just internal hyperlinks. Within the deviation description, I gave different source/reference anchor tags <a ...></a> (empty = unclickable!) at certain positions individual names (like IDs) and referred to them from elsewhere. The source URL
href="#" just means the very same page to avoid reloading. So clicking a target link beginning with a hash directly jumps to a named position.
Control + U, find e.g. "cnts" via
Control + F and learn about this technique. Find out what happens when the target link is only "#" and requires no explicit source name.