+A flag is a piece of fabric, often rectangular, used as a [symbol](/wiki/symbol) or [banner](/wiki/banner). They represent groups, nations, or ideas, communicating identity silently through color and design.
+## See also
+- [Vexillology](/wiki/vexillology)
+- [Heraldry](/wiki/heraldry)
+- [National Symbols](/wiki/national_symbols)
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