Hi Arthur, > Is there an explanation of /type/reflect/any_reverse? I started to make some examples on this but never finished. Have a look at: http://www.freebase.com/view//guid/9202a8c04000641f8000000005b7bd28 (Click the 'web link') If anybody feels like helping fill in the missing pieces then I would be happy to work on it some more. regards, --Will