Manners pertain from everything from how to introduce people to how to eat. While the precise nature of good manners may vary, the underlying principles do not. Good manners involve treating people with respect and courtesy, and in making sure that other people feel comfortable in a variety of situations. The old Biblical rule of “do as you would be done by” is sometimes used as an illustration of how manners are supposed to work.
Someone who has been properly trained will usually show more respect and deference to people who are older, as well as people who hold senior positions of authority. Good manners usually involves using respectful forms of address, such as formal titles, and being attuned to social situations to use the activities of others as behavioral cues. For example, someone who has never eaten a formal dinner can still demonstrate good manners by following the examples of others around the table.