AUI is a language that people made up using special rules. It is kind of like making up your own secret code! When people speak AUI, they use made-up words that sound different from other languages. They also have special grammar rules that are different from other languages.
The people who made up AUI wanted it to be easy for everyone to understand, so they made sure the words and rules were simple. AUI is also a very special language because it doesn't belong to any country or group of people. Anybody can learn it and speak it!
AUI can be written using special symbols and letters called characters. These characters help people to write down the words and meanings of the language.
Although AUI is not the most popular language in the world, it is still very important because it shows how creative people can be when they work together!