[Zope-dev] Who uses request.getPositionalArguments()?

Hello, I've stumbled over this by accident, but it seems that getPositionalArguments() in zope.publisher.base.BaseRequest always returns an empty value (at least, there are no tests in which it has a non-empty value), and it is also not overridden by any of the request subclasses in zope.publisher. I still haven't quite wrapped my head around the whole publishing machinery, but this strikes me as a little strange, nonetheless. Could somebody enlighten me why this is so? Thanks, Wolfgang