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

% Ex. No. 108 (Section 16.1.4 : Text format)

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

\end{document}