SoVRMLPlaneSensor(3) on Linux
The text b4765872d22f, as Debian 7 (Wheezy) shipped it.
The SoVRMLPlaneSensor class maps pointer motion into object space translations. The detailed class documentation is taken verbatim from the VRML97 standard (ISO/IEC 14772-1:1997). It is copyright The Web3D Consortium, and is used by permission of the Consortium: