Compositing Node Group
What "Compositing Node Group" is used for?
Compositing Node Group is used to composite rendering, from render passes in Blender Cycles RenderEngine.
Will there be additions to this group?
Yes, there will be additions to this node group.
Can I use it with Blender Internal Render Engine?
No, You can't use it with Blender Internal Render Engine. It's created for Cycles render passes only.
What contains the file?
The file is containing Compositing Node Group, and a test scene.
How can I use it in My projects?
Simply by appending the node to Your project. Navigate to File-Append, then choose the file with Compositing Node Group, go to Node Group folder, choose it, and append.