SoPickedPoint(3) on Linux
The text e195c8ace4ff, as Debian 6.0 (Squeeze) shipped it.
The SoPickedPoint class is used for specifying picked points. It holds miscellaneous information about the picked point, such as position, normal, texture coordinate and material index in the current material. It might also hold detail information (an SoDetail subclass) for every node in the picked path.