\documentclass{article}
+\newenvironment{foo}{==[}{]==}
+
\begin{document}
This document contains all sorts of layouts we are supposed to
support, along with weird nestings.
+At time you will see that I use subsubsections in weird places. The
+intent is just to make sure that I can include a macro-type layout
+everyzhere it makes sense.
A normal paragraph
-
-Another one
-\begin{equation}
-x = \sin y
-\end{equation}
-with maths inside
+\begin{equation}
+x = \sin y
+\end{equation}
+with maths inside it.
\begin{quote}
An environment...
\end{figure}
A paragraph\footnote{hello} with a footnote and another
-one\footnote{hello
+one\footnote{hello
there} with several paragraphs
\begin{quotation}
An environment
-\section*{with a command inside it}
+\subsubsection*{with a command inside it}
\end{quotation}
\begin{quotation}
-An environment
+Another environment
\begin{quotation}
-and the one inside it
+With another one inside it (with same layout)
-actually with several paragraphs
+[this one even has several paragraphs!]
\end{quotation}
\end{quotation}
-We can also nest enumerations (does not work quite yet)
+We can also nest enumerations
\begin{enumerate}
\item Item1
\begin{enumerate}
\item Item1.a
-\item Item1.b
-\end{enumerate}
+
+\item Item1.b (there is a paragraph break in front of this)
\begin{itemize}
-\item Item1.*
-\item Item1.*
+\item Item1.b.*
+\item Item1.b.*
\end{itemize}
+\end{enumerate}
\item Item2
\end{enumerate}
+Let's see what happens when normal paragraphs are inserted in lists:
+
+\begin{itemize}
+\item the first item
+
+with some explanatory text under it
+
+and a second paragraph for good measure
+
+\subsubsection*{we can even have one as a subsubsection}
+
+\item the second item
+
+\item the third item
+
+\subsubsection*{and a sssection heading inside it (why not?)}
+\end{itemize}
+
+What else? Well, we have descriptions:
+\begin{description}
+\item[A] first item
+\item[B] second one
+\end{description}
+
+or even bibliography
+\begin{thebibliography}{9}
+\bibitem{FOO} Edward Bar. \emph{The Foo Book}. (1999)
+\end{thebibliography}
+
\end{document}