IBM PCjr

Notice that, as it moved backward, it erased all of the
letters and numbers that were there.
The Backspace key is useful for erasing what is to the
left of the cursor.
But, when you want to go back to correct an error
you've made without losing the other characters you've
printed on the screen, you must use the Cursor Left
key, not the Backspace key.
Getting Started 2-27