Is a configuration-file format which origins of Enlightenment 17. It is used by Openmoko and Illume for configuring a lot of the look of OpenMoko and its applications.
Edje uses *.edj Files as binary-configuration files and *.edc as the source of such an *.edj file.
For compiling an *.edc file to an *.edj file you need: edje_cc For decompiling an *.edj file to an *.edc file you need: edje_decc (you might want to do this to learn about how such a file has to look like)
You can install edje_cc and edje_decc for Ubuntu by adding this source to your /etc/apt/sources.lst:
deb http://e17.dunnewind.net/ubuntu hardy e17
deb http://e17.dunnewind.net/ubuntu gutsy e17
deb http://e17.dunnewind.net/ubuntu feisty e17
After that you can install the needed tools with:
sudo apt-get update && sudo apt-get install libedje-bin