Project:Sandbox

https://www.mediawiki.org/w/index.php?title=Project:Sandbox&action=edit&oldid=2403365

https://www.mediawiki.org/w/index.php?title=Special:Translate&group=page-Manual%3A%24wgExemptFromUserRobotsControl&action=page&filter=&language=zh

Details
An array of namespace keys in which the  /  magic words will not function, so users can't decide whether pages in that namespace are indexed by search engines.