Hi, I've played a bit with interactive graph browsing in Pygame. Try out the new version of src/goal/translate_pypy.py. It analyzes a bit of PyPy (still not sure why only this bit), then display the the call graph (where nodes are functions) and the class hierarchy. Clicking on a function gives you the function's usual flow graph. Clicking on a class shows you the inferred attributes. The goal of the recent changes were also to make it practical to browse large graphs. We should be able not to get lost now. The main method of navigation is to click on a node or a connecting edge, which goes there. Use the left arrow key to come back. If you wish to, as before, you can also click'n'drag (left button to zoom, right button to scroll). A bientôt, Armin.