without latex delimiters the _{i=1} in \sum_{i=1}^n a_n is interpreted as subscript. 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}
• $2 + 2$, $3 - 3$
• \begin{xyz} latex block ignores block lvl elements (e.g. list - line starting with -) a = b - c - d \end{xyz}