This is (ab)using unicode, for example the F is actually a Mathematical Bold Fraktur Capital F: https://www.compart.com/en/unicode/U+1D571 This is terrible for screen readers and the like which are unable to read or understand these unicode characters making accessibility a real concern.
I wonder actually. Google seems to understand these, you can search with them. I wouldn't be surprised if screen readers understand these symbols. They're originally for Mathematics, and I'm sure there's plenty of blind mathematicians.
Anyone know if there are any existing libraries that do this conversion?