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| LaTeX Note 009                 		  jodys@helluin.org |
| References                                             12/18/2010 |
|                                                             v0.01 |
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LaTeX can keep track of cross references, for instance if you want to
refer to a given figure in a text you can say; "as the data in Figure 
\ref{fig:mystunningdata} show!" Latex doesn't really know *what* you
are referring too, the cross-references are completely independent of
tables, figures, etc. The cross-references allow you to associate a
name with something that is auto-numbered (sections, chapters, figures,
equations, etc.) and then refer to those things by name, rather than
by number. The way that you do this is with 

\label{<labelname>}

labelname takes becomes a reference to whatever is the nearest enclosure;
for instance

\section{My Totally Rad Section!}
\label{sec:totally-rad-section

The number of the current section, hereafter referred to as Section 
\ref{sec:totally-rad-section}, is \ref{sec:totally-rad-section}. 

There are no real requirements for naming, but the following are 
used by convention;

sec:<section name> -- Used for chapters,sections, subsections, etc.
fig:<figure name>  -- used for all figures
tab:<table name>   -- used for all tables
eq:<equation name> -- used for mathematical equations

For equations in amsmath, there is a special \eqref for referring to 
equations--all it does is add parentheses according to the publication
standard from AMS

Example;

\begin{align*}
	\label{eq:stunning-equation}
	a = b
\end{align*}

As we can see in Equation \eqref{eq:stunning-equation}, a \textbf{must} 
equal b!