I added a simple feature to CVS which people may enjoy... it pleases me,
at least. From the release notes:
New debugging feature: by turning on the configuration variable
IncludeErrorLink in Application.config, an  link will be put next
to each line in tracebacks. That link will point to a file of type
application/x-webkit-edit-file, which you should configure your browser
to run with Webware/bin/editfile.py (and edit editfile.py so that it
opens your editor with the correct file and line).