\documentclass{article}
% translate with >> pdflatex -shell-escape <file>

% This file is an extract of the PGFPLOTS manual, copyright by Christian Feuersaenger.
% 
% Feel free to use it as long as you cite the pgfplots manual properly.
%
% See
%   http://pgfplots.sourceforge.net/pgfplots.pdf
% for the complete manual.
%
% Any required input files (for <plot table> or <plot file> or the table package) can be downloaded
% at
% http://www.ctan.org/tex-archive/graphics/pgf/contrib/pgfplots/doc/latex/
% and
% http://www.ctan.org/tex-archive/graphics/pgf/contrib/pgfplots/doc/latex/plotdata/

\usepackage{pgfplots}
\pgfplotsset{compat=newest}

\pagestyle{empty}

\begin{document}
% the same as above for 3D ...
% [See the TikZ manual if you'd like to learn about nodes and pins]
\begin{tikzpicture}
	\tikzset{
		every pin/.style={fill=yellow!50!white,rectangle,rounded corners=3pt,font=\tiny},
		small dot/.style={fill=black,circle,scale=0.3}
	}
	\begin{axis}[
		clip=false,
		title=How \texttt{axis description cs} works in 3D
	]
	\addplot3 coordinates {(-5,-5,-5) (5,5,5)};

	\draw[black!15] (axis description cs:0,0) rectangle (axis description cs:1,1);

	\node[small dot,pin=120:{$(0,0)$}]      at (axis description cs:0,0) {};
	\node[small dot,pin=-30:{$(1,1)$}]      at (axis description cs:1,1) {};
	\node[small dot,pin=-90:{$(1.03,0.5)$}] at (axis description cs:1.03,0.5) {};
	\node[small dot,pin=125:{$(0.5,0.5)$}]  at (axis description cs:0.5,0.5) {};
	\end{axis}
\end{tikzpicture}
\end{document}
