enumitem

Enumitem is a LaTeX package that enhances and extends the standard list environments, such as enumerate, itemize, and description. It provides fine-grained control over the formatting of lists, including labels, indentation, and spacing, without requiring manual redefinitions of list structures. The package is widely used to produce customized and consistent list layouts across documents.

Key features include flexible label customization, advanced counter handling, and precise control of spacing. Users can specify labels with the label option (and reference them with ref), adjust indentation with leftmargin and itemindent, and fine-tune the alignment and width with widest, labelwidth, and align. Spacing parameters such as itemsep, topsep, and parsep control vertical gaps around and within items. enumitem also supports starting a list at a chosen number via start and allows resuming numbering from a previous list with the resume option. The package works with all standard list types and supports nested lists with independent or shared settings.

Usage typically begins with \usepackage{enumitem} in the preamble. Lists can be customized inline, for example by writing \begin{enumerate}[label=(\arabic*)] ... \end{enumerate}, or by setting global options with \setlist for a given level or list type. The package also provides labeling and referencing mechanisms that make it easy to produce consistent cross-references to list items.

Enumitem is designed to be compatible with most document classes and other common packages in LaTeX workflows. It is maintained as a standard CTAN package and is considered a reliable tool for producing clean, well-formatted lists in professional documents.