%%
%% This is file `picture-example.tex',
%% generated with the docstrip utility.
%%
%% The original source files were:
%%
%% picture.dtx  (with options: `example')
%% 
%% This is a generated file.
%% 
%% Copyright (C) 2006-2009 by Heiko Oberdiek <oberdiek@uni-freiburg.de>
%% 
%% This work 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. This version of this license is in
%%    http://www.latex-project.org/lppl/lppl-1-3c.txt
%% and the latest version of this license is in
%%    http://www.latex-project.org/lppl.txt
%% and version 1.3 or later is part of all distributions of
%% LaTeX version 2005/12/01 or later.
%% 
%% This work has the LPPL maintenance status "maintained".
%% 
%% This Current Maintainer of this work is Heiko Oberdiek.
%% 
%% This work consists of the main source file picture.dtx
%% and the derived files
%%    picture.sty, picture.pdf, picture.ins, picture.drv,
%%    picture-example.tex.
%% 
\documentclass{article}

\usepackage[calc]{picture}

\begin{document}

\setlength{\unitlength}{1pt}

\begin{picture}(\widthof{Hello World}, 10mm)
  \put(0, 0){\makebox(0,0)[lb]{Hello World}}%
  \put(0, \heightof{Hello World} + \fboxsep){%
    \line(1, 0){\widthof{Hello World}}%
  }%
  \put(\widthof{Hello World}, 10mm){%
    \line(0, -1){10mm}%
  }%
\end{picture}

\end{document}
\endinput
%%
%% End of file `picture-example.tex'.
