[ndarilek]

My screen reader, Orca under Linux, read those as "sigma" and "almost equal to." So I suppose those work, though I'd have to hit Google to find out how to type them. :)

[mwcampbell]

The NVDA screen reader for Windows also reads these symbols. So it looks like they're not a problem.

[shele]

In Julia editors these are written by e.g. typing `\sigma` with a backslash and using tab completion.

[currymj]

Thanks for the response, that is pleasantly surprising default behavior.