Hi, Following an earlier discussion on this list, I've made changes to zope.filerepresentation to incorporate two new interfaces, IRawReadFile and IRawWriteFile. These allow file representation adapters which behave like Python standard library 'file' objects. This in turn allows implementation of efficient reading/writing or large files (without loading everything into memory), ZServer streaming support, and the use of file representation adapters in contexts that expect a standard file. The changes are 100% backwards compatible: they merely add two interfaces. I'd very much like a release of this. :) Would anyone mind making a 3.5.1 release, or else give me PyPI rights so that I can do it myself. Cheers, Martin -- Author of `Professional Plone Development`, a book for developers who want to work with Plone. See http://martinaspeli.net/plone-book