SoCoordinate3(3) on Linux
The text aa2003ac1b09, as Debian 6.0 (Squeeze) shipped it.
The SoCoordinate3 class is a node for providing coordinates to shape nodes. When encountering nodes of this type during traversal, the coordinates it contains will be put on the state stack for later use by shape nodes of types which needs coordinate sets (like SoFaceSet nodes or SoPointSet nodes).