3 <h1 align=
"center">sub/sup test
</h1>
5 bah, let's see..
<sup>this is a superscript
</sup>hm?
<sub>and this is a subscript
</sub>. Yes.
6 Let's try..
2<sup>2<sup>2<sup>2</sup></sup></sup>.. no, we don't handle this well, but it shouldn't
7 be so big problem, I think.. What about
<sub>sub
<sup>sup
</sup>sub
</sub>..? And, hmm.. this should
10 <sub>sub
<sub>sub
<sup>sup
<sup>sup
</sup><sub>sub
</sub></sup></sub></sub><br>
11 <sub>sub
<sub>sub
</sub></sub><sup>sup
<sup>sup
</sup></sup><sub>sub
</sub>