enumerate

 \begin{enumerate}
 \item First item
 \item Second item
 .
 .
 .
 \end{enumerate}

The enumerate environment produces a numbered list. Enumerations can be nested within one another, up to four levels deep. They can also be nested within other paragraph-making environments.

Each item of an enumerated list begins with an \item command. There must be at least one \item command within the environment.