without latex delimiters the _{i=1} and _n in \sum_{i=1}^n a_n are interpreted as subscripts. we support \(...\), \[...\], $$...$$ and \begin{$env}...\end{$env} as latex fragment delimiters.

• ∑_i=1^n a_n (without latex delimiter)

• \(\sum_{i=1}^n a_n\)

• \[\sum_{i=1}^n a_n\]

• $$\sum_{i=1}^n a_n$$

• \begin{xyz}\sum_{i=1}^n a_n\end{xyz}

• \begin{xyz} \sum_{i=1}^n a_n \end{xyz}

• \begin{xyz} foobar \end{xyz}