It is rather new and has not been tested extensively, i.e. it's
probably full of bugs, so bear with me.
More info is at <http://weitz.de/cl-gd/>.
You can download it from <http://weitz.de/files/cl-gd.tgz>.
Many thanks to Kevin Rosenberg for UFFI and for his fast and effective
help when I needed functionality which wasn't yet part of UFFI.
Have fun,
Edi.