Same as for any other flag - to serve as a national symbol.
two lions fighting each other
To "represent" something or someone IS a symbol's purpose. To empower the wielder of the symbol with what the symbol represents.
Each country in America has its own flag as a national symbol of identity.
The national symbol is a llama.
meaning of bahrain national symbol
Przewalski Horse - the national symbol of Mongolia
EAGLE is the national symbol of USA
The national symbol of India is the chakara.
Denmark's national symbol is the beach.
What is the symbol for the national capital
The symbol for national capitals is usually a star enclosed in a circle. Other cities are represented by different symbols, which often represent an approximate population number. Maps almost always have a key that tell you what each symbol means.