Time for action – modifying lists using enumitem

Let's change the numbering scheme. We shall number alphabetically using circled letters. Furthermore, we will replace bullets by dashes:

1. We shall discard paralist and load the package enumitem instead. We will turn away from the compact environments returning to the standard list notation:

   \documentclass{article}
   \usepackage{enumitem}
   \setlist{nolistsep}
   \setitemize[1]{label=---}
   \setenumerate[1]{label=\textcircled{\scriptsize\Alph*},
     font=\sffamily}
   \begin{document}
   \begin{enumerate}
     \item State the paper size by an option to the document class
     \item Determine the margin dimensions using one of these packages:
     \begin{itemize}
       \item geometry
       \item typearea
     \end{itemize}
     \item Customize header and footer by one of these packages:
     \begin{itemize}
       \item fancyhdr
       \item scrpage2
     \end{itemize}
     \item Adjust the line spacing for the whole document
     \begin{itemize}
       \item by using the setspace package
       \item or...