<http://schema.org/description>
"Another week, another PTR patch! A new patch is being prepared for the PTR servers, and we've taken a look to see what has chanced between this patch and the patch released last week. "^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.wowhead.com/news=180518/ptr-patch-changes-and-additions-1-19-2011>