Thread:Support/About MediaWiki:Bs-extendedsearch-pref-setfocus/fi/reply (3)

The restriction is based on the MW client-side variable "wgIsArticle". So as I can see all pages expect of special/image/error/read only pages should be treated as pages. Actually just pages is really not meaningful. I also think "content pages" would be better like Nemo already mentioned.