## Math Supported TeX functions is [here](https://katex.org/docs/supported.html). For example: %%math \tau(u_f)*l_f \newline H(t) \xrightarrow{write} \Big[A(t+1),\ H(t+1)\Big] \newline \newline % \f is defined as #1f(#2) using the macro \f\relax{x} = \int_{-\infty}^\infty \f\hat\xi,e^{2 \pi i \xi x} \,d\xi \newline \begin{Bmatrix} a & b \\ c & d \end{Bmatrix} \dbinom{n}{k} \sqrt[3]{x} %%py print("RustPython called back and said people need to have") # You can run regular python code here. # Here is a random number generator. import random rnd = random.randint(1,5) print("nice " * rnd + "things.")