The applet converts simple math-mode LaTeX into BBCode markup. Symbols are converted into unicode, subscripts and superscripts are wrapped in [sub] and [sup] tags, and bold (\mathbf) and italic (\mathit) fonts are available. Fractions, arrays, and other complicated forms are not available. You cannot use \sqrt, but you may use \surd. Unlike in math mode, but as in regular mode in LaTeX, spaces are preserved except following commands. Thus, a b becomes a b, while \alpha \beta becomes αβ.
Report problems or get the source. Mapping for unicode characters from latex-to-unicode.