This extension hook has no documentation on MediaWiki.org. Please improve MediaWiki by adding documentation to it. See Template:ExtensionHook for instructions on how to do it.

For examples of extensions using this hook, see Category:BeforeCreateAchievement extensions . Category:Extension hooks#BeforeCreateAchievement Category:Undocumented extension hooks#BeforeCreateAchievement Category:Extension hooks provided by AchievementBadges Category:Extension hooks#BeforeCreateAchievement Category:Undocumented extension hooks#BeforeCreateAchievement Category:Extension hooks provided by AchievementBadges