<http://schema.org/description>
"When I was first getting started with Ruby, I heard a lot of talk about blocks, and how you could &amp;quot;cast&amp;quot; them to Procs by using the &amp;amp;amp; operator when calling methods. Last week, in comments about my last post..."^^<http://www.w3.org/2001/XMLSchema#string>
<http://yehudakatz.com/2010/02/25/rubys-implementation-does-not-define-its-semantics/>