Suggestions for creating fancy LaTeX math, for example:

[Joe Christensen]

OK, jing doesn't like my solution.   Does anybody have a suggestion for how to do this LaTeX code in XML?

\[\begin{array}{ccccc}

\deq \frac{Q}{\Delta t} & = & \deq \kappa & \deq A & \deq \frac{\Delta T}{\Delta x} \\

\EqStoryOver{45pt}{the rate at which energy flows}{}

& \EqStoryOver{40pt}{depends on}{}

& \EqStoryOver{50pt}{how well air allows energy to flow,}{}

& \EqStoryOver{50pt}{the size of the oven,}{}

& \EqStoryFrac{75pt}{and the amount the temperature needs to change}{}

                    {across the height of the oven}{}

\end{array}\]

This is my guess, which compiles to a reasonable version (http://physics.thomasmore.edu/ConnectedPhysics/s-story.html)

```

                <table>

                <caption>An example of how the math describes the <q>story-of</q> a physical situation.</caption>

                <tabular>

                        <col width="20%" />

                        <col width="20%" />

                        <col width="20%" />

                        <col width="20%" />

                        <col width="20%" />

                    <row halign="center">

                        <cell><m>\deq \frac{Q}{\Delta t}            </m></cell>

                        <cell><m> =                                 </m></cell>

                        <cell><m> \deq \kappa                       </m></cell>

                        <cell><m> \deq A                            </m></cell>

                        <cell><m> \deq \frac{\Delta T}{\Delta x}    </m></cell>

                    </row>

                    <row halign="center">

                        <cell><line>the rate</line><line>at which</line><line>energy</line><line>flows</line></cell>

                        <cell><line>depends</line><line>on</line></cell>

                        <cell><line>how well</line><line>air allows</line><line>energy to</line><line>flow,</line></cell>

                        <cell><line>the size</line><line>of the</line><line>oven,</line></cell>

                        <cell>

                                <tabular>

                                        <col />

                                        <row bottom="minor"><cell><line>and the</line><line>amount the</line><line>temperature</line><line>needs to</line><line>change</line></cell></row>

                                        <row><cell><line>across the</line><line>height of the</line><line>oven</line></cell></row></tabular>

                                </cell>

                    </row>

                </tabular>

                </table>

```

but jing doesn't like the tabular inside the tabular.

[Joe Christensen]

Sorry:

\newcommand{\deq}{\displaystyle}

[Rob Beezer]

Dear Joe,

That looks like a good guess. You could try a "sbsgroup" with two "sidebyside"
having 5 panels each. The problematic tabular could go in the last panel.

But you really are abusing the tabular by using a cell border as a fraction bar.
Perhaps you can think of another way to convey the division? You've hidden it
by using "rate" to describe the first term.

Rob

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