Translations:Help:Extension:AdvancedSearch/15/en

As a beta feature
 * Testwikis and Mediawiki.org: 2017-11-21 $1
 * deWP, arWP: 2017-11-29 $2
 * huWP, faWP: 2017-12-06 $3
 * Other wikis: 2018-05-08 $4