all" or "none". Unless stated otherwise it is "imageset",
-"manifest", or
+"manifest",
+"prefetch",
+"prerender", or
"xslt". Unless stated otherwise it is the empty string.
A request's @@ -917,6 +919,14 @@ not always relevant and might require different behavior.
manifest"
manifest-src
<link rel=manifest>
+ prefetch"
+ prefetch-src
+ <link rel=prefetch>
+ prerender"
+ <link rel=prerender>
xslt"
xslt"