In older Pharo versions it was possible to compare two methods selecting them via UI.  I couldn't find this opportunity in Pharo10,  so digging into the source code I found SpDiffPresenter, if you pass to it a couple of selectors it can compare them. Example: SpDiffPresenter new showOptions: true; leftText: (MyObject >> #firstSelector) sourceCode; rightText: (MyObject >> #secondSelector) sourceCode; contextClass: True; open  CheersDavide