[Haskell wikibook] Haskell wikibook - chapter "Theseus and the Zipper"

Dear Mr. Huet,

Fascinated by the zipper since reading your publication, the authors of 
the Haskell wikibook have written a special introduction to this data 
structure:

   "Theseus and the Zipper".
   http://en.wikibooks.org/wiki/Haskell/Zippers

starring Theseus and Ariadne. We hope you will enjoy it :)

All the best,
apfelmus