[jimhefferon]

I'm interested in the midcentury modern ones because they have lots of vertical rules. I'm active on the subreddit for LaTeX and there is a religion common there that even one vertical rule is an unforgivable abomination.

[tadfisher]

Great summary of the problem on StackOverflow: https://tex.stackexchange.com/a/40555

[jimhefferon]

Thanks. I've not seen that particular post.

I just made a table this morning for Calc II notes. The first column says something like $f'(x)$ in the first row and $f'(0)$ on the second. The table body lists values for different functions, one per column. I put in a column rule separator because the leftmost column seems separate from the others.

In any event, I'm suspicious of rules (pun noted).