Such as for enumerate environments to have indentation, in addition to tweaks to automatically indent entries in tables or matrices in math mode. For example, something like
\begin{enumerate}
\item 1
1.1
\item 2
\end{enumerate}
\begin{align*}
F(-x) & =-(-x)^2 & G(-x) & =-(-x)^4 & H(-x) & =-(-x)^6 \\
& =-x^2 & & =-x^4 & & =-x^6 \\
& =F(x) & & =G(x) & & =H(x)
\end{align*}
latexindentoutside of the online editor. – Werner May 10 '17 at 12:04