Thank you for getting back so quickly, but I think I was unclear.
I started with the Universal Pager Transformation, but
<link rel="next" href="http://www.example.com/article?page=2" />
is supposed to go in the <head> of the page.
Is there a way to access 'PreviousURL' or 'NextURL' from the Pager transformation and insert it in the <head> for specific pages?