You must think about the teletype era. One character commands are economical, even if you have to consult a manual to remember them all. Anything printed on the

You must think about the teletype era. One character commands are economical, even if you have to consult a manual to remember them all. Anything printed on the paper was expensive. I remember stealing color ribbons from the account reserved for manual typists and secretaries. It was also customary to use the paper roll all 4 ways, when editing.