SoBumpMapCoordinate(3) on Linux
The text 54cb592473cc, as Debian 8 (Jessie) shipped it.
The SoBumpMapCoordinate class is a node for providing bump map 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. The bump map coordinates can be used to specify explicit coordinates for a bump map. The SoBumpMap node is used to specify a bump map for the shape nodes.