My apologies for this very basic question.
How does one typeset accent marks outside of LaTeX math mode?
For example, on this question both Derek Jennings and I cite papers from Paul Erdos. Derek gets the double-dot accent mark on Erdos' name, but I don't know how. When I pull up Derek's source there's no markdown there; just the symbol ö itself! Of course, when I see an accented character that I want to use I can just copy it (which is what I just did with ö), but this doesn't help me if there's an accent mark I want to use but I haven't seen others use yet.
Another example: Mariano Suárez-Alvarez (copied from one of his posts). I don't know how to get the acute accent mark on the a.