You might have all noticed that https://mathoverflow.net/help/formatting does not mention (La)TeX. I believe this is a very important topic and should not be hidden in "advanced"; actually, a link should already be here: https://mathoverflow.net/help

Notice that also https://mathoverflow.net/editing-help#latex is not very helpful for newcomers, who might not even know what LaTeX is. E.g. a bright undergraduate student might not know LaTeX, but still be a meaningful contributor to MO.

Yes, I know that on the question asking page it is better, but on the other hand it certainly is a problem if one wants to ask a question, but cannot find out how to typeset it in an acceptable way *before actually starting* to type the question up anyway.

Perhaps MO should indeed follow suit of `math.se`

, as explained in the answer by `arjafi`

.