[Pharo-users] Pharo refactoring rewrite tool?

I recall there was a refactoring rewrite tool - but where is it in Pharo? Is it something you have to load separately? Or do you just copy some of the deprecated examples and do it manually? I thought there was something with a window where you typed in a rule and then it showed you what it would do? (Or was that only in Dolphin?) Thanks, Tim