In the HEAD of this page:

<link rel="alternate" title="previous version (test)" href="demonstration-only/">
<link rel="appendix" href="./appendix.html">
<link rel="bookmark" href="/arc/untitled.html">
<link rel="index" href="http://lyberty.com/index.html">
<link rel="start" href="http://lyberty.com/content/index.html">

 

nope, the "rel" links used in the html body don't work after all:

see the links with <a href="" rel="top"> rel="up" at arc/index.html ....