Comment by TacticalCoder

Regarding fonts, here's one that makes me sad... The ASCII vertical bar (the "pipe" symbol) used to be a "broken bar", making it very clear it wasn't an uppercase "I" or a lowercase "l" or even a "1" (in some old or stylized font).

I really like a broken vertical bar. There's been a fight, where it became a solid vertical bar, then a broken vertical bar again, then a solid bar again:

https://en.wikipedia.org/wiki/Vertical_bar

See the "Solid vertical bar vs broken bar" section.

Because mathematical "OR" and all that IIUC. But I don't care. I'm in control. So my monospace font use a broken vertical bar (and a taller one than what's usually seen too, there's no risk of mistaking my "broken bar" '|' with '!'). When I write "my" font, it's literally a font I made myself by using FontForge slightly modifying another font (I basically modified @$%&|l and a few other tiny details). I cannot distribute it though.

EDIT: funnily enough reading that Wikipedia article I posted, I checked my keyboards... Two of them, an old IBM Model M and a "not so old but still old" Sun keyboard do both have a broken bar printed as the vertical bar: I never realized that!