SoTransparencyType(3) on Linux
The text 5fb4dfb0b6a9, as Debian 6.0 (Squeeze) shipped it.
The SoTransparencyType class is a node for setting the transparency type for shapes. In earlier versions of Coin/Open Inventor it was only possible to set the transparency mode globally for an entire scene graph, which could be inconvenient if different transparency types was wanted for different shapes.