Don MacKay (second from left), Permanent Representative of New Zealand to the United Nations, and Chairman of the General Assembly Ad Hoc Committee on a Comprehensive and Integral International Convention on Protection and Promotion of the Rights and Dignity of Persons with Disabilities, watches a demonstration of the Thiel Beta X Braille printer which was presented to him by Harold Snider (left), Executive Director of Services for the Visually Impaired, today at UN Headquarters in New York. The new printer will allow the printing of documents directly into Braille.