Browing the Mozilla web-site I came across I nice utility which enables cross-referenced source code browsing: LXR http://lxr.mozilla.org/mozilla/source/webtools/lxr/ For example, see e.g. http://lxr.mozilla.org/mozilla/source/expat/xmlparse/hashtable.c I suppose setting this up on python.org would ease referencing Python C sources a lot and also provide a nice tool for learning to understand the internal structures of the interpreter. What do you think ? -- Marc-Andre Lemburg CEO eGenix.com Software GmbH ______________________________________________________________________ Company & Consulting: http://www.egenix.com/ Python Software: http://www.egenix.com/files/python/