\documentclass[12pt,a4paper]{article}

\usepackage{pstricks,pstcol,pst-node,pst-eps}
\newlength{\parwidth}
\setlength{\parwidth}{50mm}
\newlength{\padding}
\setlength{\padding}{\parwidth}
\addtolength{\padding}{-13mm}
\begin{document}
\sffamily
\begin{TeXtoEPS}%
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\psset{arrows=<-,nodesep=3pt,linewidth=0.4pt}
\color{white}\fbox{\color{black}
\begin{psmatrix}[rowsep=5mm,colsep=0pt,mnode=r]
 \makebox{\texttt{d}}\, & \,\psframebox{\texttt{r w x}}\, &
  \,\psframebox{\texttt{r w x}}\, &
  \,\psframebox{\texttt{r w x}} \\
  & & & \makebox[7ex][l]{\parbox{\parwidth}{Apply to \textbf{o}ther
      users who are not the user that owns the file nor members of the
      group that owns the file}} \\
  & & \makebox[7ex][l]{\parbox{\parwidth}{Apply to members of the
      \textbf{g}roup owner of the file, but excluding the user that
      owns the file}} & \\ 
  & \makebox[7ex][l]{\parbox{\parwidth}{Apply to the \textbf{u}ser
      that owns the file}} & & \\ 
  \makebox[1ex][l]{\parbox{\parwidth}{File type}} & & & \\ 
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  \ncline[nodesepA=0pt]{1,2}{4,2}
  \ncline[nodesepA=0pt]{1,3}{3,3}
  \ncline[nodesepA=0pt]{1,4}{2,4}
\end{psmatrix}\hspace*{\padding}}
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\end{TeXtoEPS}
\end{document}
