As another head scratcher, what is the shift-1 symbol? The exclamation point appears to be the shift next to one of the 3 left arrow keys, but I'm also unfamiliar with the regular unshifted key. Anyone familiar with these?
On later generations of IBM terminal keyboard, you'll see | on the shift-1 position, and a separate key with the broken-bar (¦) symbol. For example, on this keyboard, the broken bar is below the backspace key along with the \ character. https://sharktastica.co.uk/image?id=qhTU8QvD
The reason for the two different types of bar/pipe characters, and why the original IBM PC keyboards only had the broken bar on the keyboard, involves a particularly arcane footnote of history relating to supporting the PL/I language on ASCII terminals: https://www.os2museum.com/wp/a-wunderbar-story/
> The downside is how tall and aggressively angled the keyboards are, which are very far from modern ergonomic standards.
Like a typewriter. And like a typewriter, you were expected to have them on suitable furniture so the keytops were at the right height.