SoVRMLExtrusion(3) on Linux
The text 3a166b90a5b2, as Debian 7 (Wheezy) shipped it.
The SoVRMLExtrusion class is a a geometry node for extruding a cross section along a spine. 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: