Thank you so much for this. I'm embarrassed to admit that I haven't cracked an HTML guide in probably a decade, and I didn't realize that the em and strong tags had such an important function. I used to nag and nag people about using alt tags, but I'm embarrassed that I've allowed myself to slack off on learning about more of the newer accessibility options.

Thankfully, I have a text editor that does multi-file simultaneous search and replace. :) Thanks again for the post, it's extremely helpful.