Case do matter.
Shorter form: "\033[H\033[J"
2.) VT-100's did not implement the full ANSI spec like Ann Arbor, Heathkit,
Wyse etc. So there are a number of things that those terminals did
better. A really good reason to you curses(3) because all the knowledge is
keep in the termcap and as a programmer you don't need to worry about it.
Probably true. However, I'm not sure Ann Arbor or Heathkit did much better.
As far as I can remember, they were always more "weird"
Personally, I'd give an AAA or a Heathkit away if one was dropped on me. A VT100 I would keep. :-)