“SecondLine should be preceded by the backslash character \”
Does the output printed to the console pane have a backslash before SecondLine? I know you have one backslash before SecondLine in your code, but that’s not what is important. It needs to be there when printed to the console. What do you think you need to do to get that backslash to print to the console? (I would read the instructions again because it tells you exactly how to do this).
\Thirdline
First, you didn’t quite type this right. The letter l should be uppercase. Also, the backslash before the letter T is doing nothing. You only need a backslash when you want to use special escape characters, such as the \n before ThirdLine to create a newline. But \T isn’t a special escape character and thus you can just get rid of that backslash.