Error: Bad value facebox for attribute rel on element a: The string facebox is not a registered keyword.

[James Wrest]

Hi 

I get this error when i run https://validator.w3.org/nu/ 

Any ideas how to fix? as you need it for the facebox to work?

From line 665, column 1; to line 665, column 44

v>↩</div>↩<a href="#info" rel="facebox" id="backface">↩ <di

Syntax of list of link-type keywords:

A whitespace-separated list of link types, with no duplicate keywords in the list. Each link type must be listed as allowed on <a> and <area> in the HTML specification, or must be listed as allowed on <a> and <area> on the Microformats wiki. You can register link types on the Microformats wiki yourself.