# Multi-line nodes/annotations in pgfplot

It would be great if I could get the annotation in the graph depicted below on two lines, but I can't seem to figure it out.

Presently, I have:

\begin{tikzpicture}
\begin{axis}[
xlabel={$d_x = w^T_x-w^G_x$},
ylabel={$s_x = e^{-\frac{d_x^2}{2\sigma^2_x}}$},
]
domain=0:600,
smooth,
]{exp(-x^2/(2*266.72^2))};
\node[coordinate,pin=-90:{$d_x = 100, s_x = 0.932$}] at (axis cs:100,0.932) {};
\end{axis}
\end{tikzpicture}


Looking at a similar question, I've tried changing the \node to:

\node[coordinate,pin=-90:{$d_x = 100$\\$s_x = 0.932$}] at (axis cs:100,0.932) {};


This produces the following error:

There's no line here to end

I've also tried replacing \node with a \draw:

\draw
(axis cs:100,0)
|-  (axis cs:0,0.8)
node[near start,left]{$d_y = 100$\\$s_x = 0.932$};


This, too, doesn't seem to want to compile:

Something's wrong; perhaps a missing \item

-

You need to set the align option in order to get the \\ to work. Try
\node[coordinate, pin={[align=left]-90:{$d_x = 100$,\\$s_x = 0.932$}}]

(where you can also choose align=center or whatever if you prefer. Note the extra set of curly braces after pin=.)