Latex plugin example

Following code :

<<latex($$\oint_\gamma \frac{f'(z)}{f(z)}dz$$)>>

<<latex($$\left|{1\over N}\sum_{n=1}^N \gamma(u_n)-{1\over 2\pi}\int_0^{2\pi}\gamma(t){\rm d}t\right| \le {\varepsilon\over 3}.$$)>>

gives :