Hi! I've recorded the video as Damian suggested to show how to use the code navigation based in the ast :) Here it's the video: http://www.youtube.com/watch?v=pFLyzEI0jmE (Sorry for my English) And if you want to try: Gofer it url: 'http://smalltalkhub.com/mc/gisela/NodeNavigation/main'; package: 'ConfigurationOfNodeNavigation'; load. ((Smalltalk globals at: #ConfigurationOfNodeNavigation) project version: #development) load. A summary for the shortcuts: - going to the parent: ctrl + shift + p (command + shift + p for mac) - going to the first child: ctrl + shift + o (command + shift + o for mac) - going to same level node: ctrl + shift + u (command + shift + u for mac) It would be great to use the arrowUp or down, I want to check if it's easy to make them work first and also make the navigation available for debugger, workspace, message browser (...)