The director of protocol at the Cameroonian Ministry for External Relations in Yaounde also declined to comment.

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"Even with the new normal of being informal, the proper way to start an e-mail is with 'Dear, '" said Cynthia Lett, director of the Lett Group, a protocol training company in Silver Spring, Maryland.

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"This is the first time that the major printer manufacturers and print service providers have converged on a single printing protocol, " says Don Wright, chairman of the Printer Working Group and director of strategic and technical alliances for Lexmark, a supplier of printing products.

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Kim Carstensen, director of the global climate initiative with environment group WWF, said that much more movement was needed on the Kyoto Protocol negotiations here.

BBC: Copenhagen climate summit negotiations 'suspended'