SoVRMLBillboard(3) on Linux
The text bc0fe9f3195d, as Debian 7 (Wheezy) shipped it.
The SoVRMLBillboard class is used for rotating geometry towards the viewpoint. 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: