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For programming, this is why I name variables "foo" and "bar" and not "FO0" and "F0O". Really opens up the range of fonts you can use.

Contracts. I’ve run into the issue trying to reference paragraph 2O vs paragraph 20. (Paragraph 2 is often definitions and tends to get lengthy.)

That's a good example. It makes me curious about such nested references, though -- in my mind, they usually look something like 2.III.O, or 2(III)(O), or the like.

That’s definitely how they would usually be referenced but when it’s crunch time and you’re firing emails back and forth trying to hammer out the details that tends to fall by the wayside. Especially on mobile. And 99% of the time it’s clear enough. 2(B) or 2B doesn’t leave much room for confusion but oh man did those missing parens on the O cause us a lot of confusion about version control.

I meant finance and investment analysis, not programming.