An official letter is more formal than a personal one. After giving our address at the right-hand top we make it clear to whom we are writing by giving the name and address of the person written to. Our salutation is also formal. We begin a ‘Dear Sir’ (or ‘Dear Madam’) if we are writing to the Manager, or ‘Dear Sirs’ if we are writing to a group as a whole. At the end, we sign it ‘Yours faithfully’ with our full name. To the Editor of a newspaper, we generally write ‘ Yours truly’. The letter itself is also quite formal. Hence, it is written is good English free from slang.