who can imagine typing ten page term paper on type writer, so if left out a line on page 3, had to type 7 pages over again.
My first typewriter was manual; you had to pick up your hand to hit the return lever to bring the carriage to the next line. Remember the little bell that went “Ding?”
Even on an electric typewriter, you still had to hit a key to send the paper to the beginning of the next line.
Of course, there was all the correction stuff as well – either Wite Out, or correction tape, or a cartridge you could pop into the electric machine.