Ok, this time it is in the Cells FTP directory:
ftp://common-lisp.net/pub/project/cells/uc-ring-net.pdf ftp://common-lisp.net/pub/project/cells/uc-ring-net.sig (signature if desired)
That is a very rough draft of a great little use case with a surprise ending I (still) won't give away. I am going to spend a little time now cleaning up the demo code of the solution. In the meantime feel free to request clarifications. Don't worry about proofreading stuff -- I did not even run spellcheck on it yet.
After this I will produce text-based tutorials of all Cell functionality (probably in the form of readable source ala "literate programming") and a corresponding reference section (PDF again).
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