MediaWiki:Apihelp-markfortranslation-param-translatetitle
If yes, allow translation of the display title. If no, do not allow translation. If absent, allow translation unless the page previously disallowed translation, or if the page is a template.
If yes, allow translation of the display title. If no, do not allow translation. If absent, allow translation unless the page previously disallowed translation, or if the page is a template.