I'm reading a document created with TeX, and it has rather nice chapter headings. Does anyone know how this was done?
Update
Ok, I've got quite far using TikZ, the only thing I haven't got is the number extending into the margin:
\usepackage{titlesec}
\usepackage{tikz}
\usetikzlibrary{calc}
\titleformat{\chapter}[display]
{}
{\hfill \tikz[remember picture] \node[] (nr) {\fontsize{20}{70}\selectfont\color{black}\textsc{Chapter~~} \fontsize{60}{70}\selectfont\color{black}\thechapter};
\begin{tikzpicture}[overlay,remember picture]
\coordinate (rightborder) at ($(nr)+(100,0)$);
\coordinate (right) at ($(nr.east) + (0.5,0)$);
\draw[line width=4.5em] (right) -- (rightborder);
\end{tikzpicture}}
{-1ex}
{\filleft\fontsize{30}{50}\selectfont}
[\vspace{-1ex}]