We write letters to the editor to express our agreement or disagreement with topics or articles published in newspapers or magazines. We start with "Dear Sir/Madam" and state the reason for writing and our opinion. If replying to another letter or article, we provide details about it. The main body presents our viewpoints in separate paragraphs with reasons and examples. We summarize our opinion in the last paragraph and state any expected action, ending with "Yours faithfully" and our full name.