The term 'THE MANNER IN WHICH' can be abbreviated to the three-letter word 'HOW'. This phrase is used to describe the way in which something is done or the method by which something is accomplished. It is often used to ask questions about the process of doing something, such as 'How did you do that?' or 'How did you get here?'. It can also be used to provide an explanation of how something was done, such as 'This is how I did it.'