U.S. Board on Geographic Names: Collection and Dissemination of Indigenous Names (United Nations Group of Experts on Geographical Names, Twenty-third Session Vienna, 28 March – 4 April 2006, Working Paper No. 82), S. 3: "An example of this has been the addition of the glottal stop (okina) and macron (kahako) to placenames of Hawaiian origin, which prior to 1995 had always been omitted. The BGN staff, under the direction and guidance of the Hawaii State Geographic Names Authority, has been restoring systemically these marks to each Hawaiian name listed in GNIS."
