[xwiki-users] WYSIWYG 2.0 - why rel="__blank"

Hi, I created an external link with the new wysiwyg editor (1.8.3). After that, I switch to wiki editor and the link looks like this: [[link>>xwiki:Sandbox.WebHome||rel="__blank"]] But rel="__blank" is not defined in the Syntax 2.0 (according to http://platform.xwiki.org/xwiki/bin/view/Main/XWikiSyntax). Shouldn't it be [[link>>xwiki:Sandbox.WebHome||target="_blank"]] ? Thanks Reto