# Subscripts in the titles of questions?

How did they get subscripts in the title of this question? It's like Latex in the title without Latex in the title! It would greatly beautify our titles if we could do this for all questions, especially if it doesn't interfere with search results.

I personally prefer using trivial/ common names wherever possible, i.e. substitute $\ce{H2O}$ with water. For the given example, lead (IV) chloride would probably lead to better results in searches.