<chapter><title>Graphic Tests</title>

<informalequation>
<alt>e=mc^2</alt>
<graphic fileref="emc2.gif"></graphic>
</informalequation>

<informalequation>
<alt>e=mc^2, smaller</alt>
<graphic fileref="emc2.gif" scale=50></graphic>
</informalequation>

<informalequation>
<alt>e=mc^2</alt>
<graphic entityref=emc2></graphic>
</informalequation>

<informalequation>
<alt>e=mc^2</alt>
<graphic entityref=emc2 fileref="emc2.gif"></graphic>
</informalequation>

</chapter>
