Internal links to posts, custom-type posts, pages, categories and tags with any HTML attribute(s).
This is far and away the best version of this plugin, both the sense of "simplest" and "most functional". The only thing it is missing is the ability to link to comments. I'd like to link to this URL: http://blog.enfranchisedmind.com/2013/11/congratulations-you-are-screwed/#comment-1139063511, but there's no way to either specify the anchor or the comment id to generate the link. If it had that, it would be 5 stars with a bullet. In any case, I'm still recommending this to everyone.