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

% Ex. No. 103 (Section 15.4.1 : Ball; use of \tkzcname{tkzDrawMarks})

\begin{tikzpicture}
  \tkzInit[xmax=3,ymax=1]
  \tkzAxeXY
  \tkzDrawMark[mark=ball](1,.5)
\end{tikzpicture}

\end{document}