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

% Ex. No. 107 (Section 16.1.3 : Text with a period)

\begin{tikzpicture}
  \tkzInit[ymax=5,xmax=6]
  \tkzAxeXY
  \tkzDefPoint(3,3){A}
  \tkzText[draw,opacity=.6,
           inner sep=.6 cm,
           line width = 1pt,
           color    = black,
           fill = purple!20](A)
           {My text}
\end{tikzpicture}

\end{document}