When I was a very green coder I saw the vertical tab in one of those tables and spent a fruitless afternoon trying to use it to align some text. I don't even re

When I was a very green coder I saw the vertical tab in one of those tables and spent a fruitless afternoon trying to use it to align some text. I don't even remember what I thought it did but the afternoon could have been better spent if anything anywhere had said it does absolutely nothing on any modern system. So the harm is that people see vertical tab and without the associated historical context come up with their own ideas of what it does and then waste time. If you do include it at least show it in such a way that people know it's a historical oddity with really nothing but very obscure uses like the fingerprinting example mentioned elsewhere in the comments.