\input{preamble-standalone.ltx}
\begin{document}

% Ex. No. 66 (Section  8.6.3 : Example of point plots)

\begin{tikzpicture}[scale=.5]
   \tkzDefPoint(1,3){A}
   \tkzDefPoint(4,1){B}
   \tkzDefPoint(0,0){O}
   \tkzDrawPoint[shape=cross out,size=12,color=red](A)
   \tkzDrawPoint[shape=cross,size=12,color=blue](B)
   \tkzDrawPoint[size=12,color=green](O)
   \tkzDrawPoint[size=12,color=blue,fill=yellow]({2,2})
\end{tikzpicture}

\end{document}