Ordered and Unordered Lists

Welcome back to Document Structure and Layout! This is the third lesson in the course. In the first two lessons, you built a clear heading hierarchy with sections and subsections, then used that hierarchy to generate an automatic table of contents. Together, those skills give your documents professional structure and top-level navigation.

Now we turn our attention to organizing content within those sections. Many kinds of information — instructions, checklists, outlines — read much better as a list than as a block of prose. In this lesson, you will learn how to create bulleted lists and numbered lists in LaTeX, and how to nest one list type inside another to represent grouped steps, categorized items, or structured outlines.

Think about a recipe, a set of assembly instructions, or a packing checklist. In each case, the information is best presented as a vertical list rather than a dense paragraph. Lists break content into short, scannable pieces so the reader can quickly follow steps, compare options, or see categories at a glance.

LaTeX provides two core list environments for this purpose. One produces bulleted (unordered) lists for items where sequence does not matter, and the other produces numbered (ordered) lists for items where the order is important. Both environments use the same simple building block — the \item command — so once you learn one, the other feels immediately familiar.

To create a bulleted list, wrap your items in the itemize environment. Each entry begins with the \item command, and LaTeX automatically places a bullet symbol in front of it. Here is a minimal example:

\documentclass{article}
\begin{document}

\section{Supplies}

\begin{itemize}
  \item Notebook
  \item Pen
  \item Highlighter
\end{itemize}

\end{document}

When compiled, this produces a vertically spaced list with a bullet (•) before each entry. Notice that you did not type any bullet characters yourself — LaTeX handles the formatting, just as it handled section numbering in earlier lessons. The indentation inside the source code is optional but helps keep your .tex file readable.