Yes, that's what Hans calls them! Earlier, Hans improved my Peekaboo posts hack by adding a "Summary only" link with which you can collapse it back to summary. Many of you thought this is a good feature. Together, we have also made the "Read more" link to show up only for the posts that have been divided into summary and full post. So, it won't appear anymore for the shorter posts/old posts which you haven't divided. As an example, this post was not divided and so you don't see any "Read more" link.
Hans has announced the final version of code in his post. I have also updated my original post with this version of code. If you have already applied the hack, you just have to replace some lines in red with different lines in red :). If you are a new Beta blogger, you could wait for the 3-column templates that I am going to release which will have this and my other hacks built-in!