U+1F1ED "🇭" Regional Indicator Symbol Letter H Unicode Character

U+1F1ED "🇭" Regional Indicator Symbol Letter H is a dedicated code point in the Unicode standard used exclusively as a component for constructing national or regional flags. It does not represent an actual flag by itself but instead functions as a special "alphabet" letter within a pair of regional indicator symbols. When combined with its counterpart, such as the Regional Indicator Symbol Letter U (U+1F1FA "🇺"), it forms the valid two letter sequence "HU" which renders as the flag of Hungary. This system allows over 250 different flags to be dynamically created by pairing two of these 26 regional indicator letters, which are assigned to the letters A through Z in the Unicode Block for Enclosed Alphanumeric Supplement.