Indeed the screenshots and explanation is outdated. I've added your comment to the book. That should help you go through in the latest Pharo: 1. In the browser select an item from the package you want to check, for example a class. 2. In the context menu of that item select 'browse package (p)' or 'refactoring scope > package' which both do the same. 3. In the new (yellow) browser that is scoped and should only show the code of your package browser select 'refactor > code critics'. 4. In the new browser wait until the package has finished searching. This might take a while. A progress indicator should appear after a while in the window title. 5. After completion the bold items display problems. Select one and click on 'browse' to open a view on the problems. Lukas -- Lukas Renggli http://www.lukas-renggli.ch