--- /dev/null
+\documentclass{standalone}
+
+\usepackage{tikz}
+\usetikzlibrary{shapes.symbols}
+\usetikzlibrary{arrows}
+\usetikzlibrary{calc}
+
+\begin{document}
+
+\begin{tikzpicture}[>=stealth]
+ \draw [->] (0,0) -- (0,5);
+ \draw [->] (0,0) -- (5,0);
+ \draw [->] (0,0) -- (0,0,5);
+
+ \node[draw,red,cloud,minimum height=2cm,minimum width=2cm] (mop) at (3,4,3) {$\color{black}\bullet$};
+
+ \node (os) at (2.5,2,3) {object system};
+ \draw (os) -- (mop.center);
+
+ \node[red] (mspace) at (5,6,3) {MOP space};
+ \draw[red] (mspace) -- (mop);
+\end{tikzpicture}
+
+\end{document}
\ No newline at end of file