The term 'Same-as-Above Marks' is a type of notation used in crosswords. It is also known as 'Dittos' and is abbreviated as 6 letters. This notation is used to indicate that the answer to a clue is the same as the answer to the previous clue. It is commonly used when two or more clues have the same answer, such as when a clue is repeated in a different language. This notation saves time and space, allowing for more complex puzzles.