28 May, 2002: Oh my god, it's full of little regularly-arranged stars

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The pattern which is printed on modern European bank notes and is recognised by photocopiers which refuse to print it. See this mailing list posting for more information. To my irritation, I wasn't able to find this with Google -- apparently because the word I was searching for -- `photocopying' -- is hyphenated in the document....

Copyright (c) 2002 Chris Lightfoot; available under a Creative Commons License.