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+%%
+%% The LaTeX Companion, 2ed (second printing August 2004)
+%%
+%% Example 8-2-9 on page 474.
+%%
+%% Copyright (C) 2004 Frank Mittelbach, Michel Goossens,
+%%    Johannes Braams, David Carlisle, and Chris Rowley
+%%
+%% It may be distributed and/or modified under the conditions
+%% of the LaTeX Project Public License, either version 1.3
+%% of this license or (at your option) any later version.
+%%
+%% See http://www.latex-project.org/lppl.txt for details.
+%%
+
+\documentclass{ttctexamargin}
+\pagestyle{empty}
+\setcounter{page}{6}
+\setlength\textwidth{330.59894pt}
+
+\StartShownPreambleCommands
+\usepackage{amsmath}
+\newcommand\relphantom[1]{\mathrel{\phantom{#1}}}
+\newcommand\ve{\varepsilon}  \newcommand\tve{t_{\varepsilon}}
+\newcommand\vf{\varphi}      \newcommand\yvf{y_{\varphi}}
+\newcommand\bfE{\mathbf{E}}
+\StopShownPreambleCommands
+\begin{document}
+\begin{equation} \begin{split}
+  f_{h, \ve}(x, y)
+    &= \ve \bfE_{x, y} \int_0^{\tve} L_{x, \yvf(\ve u)} \vf(x) \,du  \\
+    &= h \int L_{x, z} \vf(x) \rho_x(dz)                             \\
+    &\relphantom{=} {} + h \biggl[
+       \frac{1}{\tve}
+       \biggl( \bfE_{y} \int_0^{\tve}  L_{x, y^x(s)} \vf(x) \,ds
+               - \tve \int L_{x, z} \vf(x) \rho_x(dz)      \biggr) + \\
+    &\relphantom{=} \phantom{{} + h \biggl[ }
+       \frac{1}{\tve}
+       \biggl( \bfE_{y} \int_0^{\tve}  L_{x, y^x(s)} \vf(x) \,ds
+               - \bfE_{x, y} \int_0^{\tve} L_{x, \yvf(\ve s)}
+                                            \vf(x) \,ds    \biggr) \biggr]
+\end{split} \end{equation}
+\end{document}