TeX: The Enumerate Package

The enumerate package provides a simple intuitive interface to control the appearance of enumeration counters.

You can adorn the usual enumerate environment with one of  A a I i or 1 to produce capital alphabet, small alphabet, capital roman, small roman, or numeric counters. You can also throw in some extra decorations such as "(a)", "a)", "N 1." etc.

From the documentation:

These letters may be surrounded by any strings involving any other TeX expressions, however the tokens A a I i 1 must be inside a { } group if they are not to be taken as special.

 Here is an example from the documentation:

\begin{enumerate}[EX i.] 

\item one one one one one one one

      one one one one\label{LA} 

\item two
    \begin{enumerate}[{example} a)]
    \item one of two one of two 

          one of two\label{LB}
    \item two of two
    \end{enumerate}

\end{enumerate}
 
\begin{enumerate}[{A}-1]
\item one\label{LC}
\item two
\end{enumerate}