Connie,
Your enter key should make a new line (generate a line feed)
like it did here. If it doesn't you have something on your computer that needs re-set. Filter keys may be on, sometimes the "Insert" key needs to be pressed, etc.
EDIT: PS: when that happens it is frustrating to the hilt!!!
Two weeks ago I got so mad at a xxxx brand printer that I took it out to the garage and held it up and slammed it into eternity. It had again refused to print AGAIN until I paid the ransom of a new cartridge when it already had fresh ones in it. I bought a Brother and am much happier with it. IT hasn't held back printing for ransom cartridge money yet.