MediaWiki:Apihelp-query+revisions+base-param-difftotextpst
From ZEuS-Wiki english
Use action=compare instead. Perform a pre-save transform on the text before diffing it. Only valid when used with $1difftotext.
Use action=compare instead. Perform a pre-save transform on the text before diffing it. Only valid when used with $1difftotext.