I always preview before I post, and I think I discovered another bug. Even if a link is broken, it still previews blue, thus giving a false impression that it's coded correctly.
The syntax for A (anchor) is <a>your anchor content</a>.
Not all anchors are hyperlinks, though. You can turn an anchor into a hyperlink by adding the href attribute; full syntax then is <a href="your url">your anchor content</a>.
Mark is incorrect. a:link matches hypertext links only in CSS and can thus differentiate A HREF from A ID. It’s a question of CSS, not HTML, and no, it isn’t true that nothing can be done.