What is normal in letters?

In the context of letters, "normal" typically refers to the standard format and structure used for written communication. This includes elements like a proper greeting, body, closing, and signature, as well as adherence to grammatical and spelling conventions. The tone may vary based on the relationship between the sender and recipient, but clarity and respect are generally considered essential. Overall, a "normal" letter effectively conveys its message while maintaining a professional or personal touch, depending on the context.