- Mediawiki (list of symbols)
- LaTeX wiki (list of symbols)
- Wikibooks
- Syronex (list of symbols)
- Art of Problem Solving wiki
- The Student Room
- bunch of gifs (list of symbols)
- OpenOffice (are these the same as LaTeX? Or completely different?)

Use ** \frac numerator denominator** instead of

Use `\left (` and `\right )` instead of normal parens — this way the parens stretch. This also works for the many different kinds of brackets available. [1]