Thread:Support/Special:AdvancedTranslate (8)

I want to change https://translatewiki.net/wiki/MediaWiki:Sp-translate-data-SpecialPageAliases/sa this page. But there is a warning "DO NOT EDIT THIS PAGE DIRECTLY! Use Special:AdvancedTranslate." So please tell me what is Special:AdvancedTranslate and how can I use that ?