Subscript letters?

[Katie Wasserman]

(02-03-2014 06:52 AM)walter b Wrote:  In the old forum, we had _and , but these don't work here anymore. What to do?

You can use _{x} inside of an in-line LaTeX expression to get A\(_{x}\), for example.
In-line LaTeX expression are \ ( expression \ ) without the spaces between the \ and the ( or ). Similarly, superscripts are done with ^{x}, A\(^{x}\), for example.