Introduction to TeX and LaTeX
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Here's the first thing to know:

• TeX is pronounced like the "tech" in technology. LaTeX is pronounced like "law-tech" or (sometimes) "lay-tech".

So what do these oddly pronounced and oddly spelled words represent? One might officially call them "document preparation systems", but basically they are a markup language allowing you to typeset mathematical expressions easily. You don't get the nice point-and-click that comes with Microsoft products, but you do get beautiful equations and automatic handling of things like page numbering, equation numbering, table of contents, etc.

## Benefits of TeX

Some of the benefits of using TeX are:

• Automatic numbering of pages, equations, sections, etc.
• Easy to write mathematical expressions.
• Spacing in mathematical expressions is handled very well (particularly in comparison to other products out there!)
• Automatic handling of bibliographic information.
• Fully customizable.

Some of the drawbacks are:

• Need to "compile" documents before seeing what they look like.
• No point-and-click interface.
• Can be difficult to insert pictures into documents.
• Sometimes takes a lot of searching to find out how to do what you want to do.

# The Structure of a TeX Document

Here is the basic code for a TeX document:

\documentclass{article}

\begin{document}
Hello world.
\end{document}