August 14, 2022:
You could get alternate ribbons. Standard black with red, but also blue with green. Were there others? Not that I experienced.
The aluminum arms supporting the paper feed made a swishing singing sound when opened or closed. They had a satisfying spring: not too loose, not too stiff. The paragraph key was firm in a mechanical way.
If I remember, the "clear / set" arm customized the indent length invoked by the paragraph key. I think I'd play with extreme settings just to see what would happen.
When did she get me this? Memory suggests it was always there, although the typing skill came in fifth or sixth grade. Later than that, then.