
sergiogomez
/ Moderator
Oct 27, 2008, 12:08 PM
Post #3 of 10
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As Rolly said, it means that whatever is being abbreviated is plural. Estados Unidos, FerroCarriles, etc. Odd, but every language has its quirks. Rules change: sometimes people use single letters, especially for "estados unidos," but double letters are always more acceptable.
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