SoComputeBoundingBox(3) on Linux
The text 1f9d1b54be5b, as Debian 4.0 (Etch) shipped it.
The SoComputeBoundingBox class is used to calculate a bounding box. This engine is simply a wrapper around the SoGetBoundingBoxAction, for a convenient way of having automatic updating of some data in the scene graph which is dependent on the bounding box of some other part of the scene.