%%
%% The LaTeX Companion, 3ed
%%
%% Example 8-5-15 on page I-640 in "Basic objects".
%%
%% Copyright (C) 2022 Frank Mittelbach
%%
%% It may be distributed and/or modified under the conditions
%% of the LaTeX Project Public License, either version 1.3c
%% of this license or (at your option) any later version.
%%
%% See https://www.latex-project.org/lppl.txt for details.
%%

\documentclass{tlc3exa}
\pagestyle{empty}
\setcounter{page}{6}
\setlength\textwidth{111.0pt}

%StartShownPreambleCommands
\usepackage{tikz}
%StopShownPreambleCommands

\begin{document}
 \tikz\path[draw,fill]
          (0,2) node[circle,draw,dashed]{First}
 --       (1,1) node[draw=blue,fill=gray,double]{Second}
 rectangle(2,2) node[behind path,fill=blue,text=white,
                     font=\bfseries]{Third};
 \par\vspace{1cm}
 \tikz\path[draw,fill]
          (0,2) node[circle,draw,dashed] at (1.5,0.5) {First}
 --       (1,1) node[draw=blue,fill=gray,double,
                     anchor=north east]{Second}
 rectangle(2,2) node[behind path,fill=blue,text=white,
                     font=\bfseries,anchor=north]{Third};
\end{document}