SoGetBoundingBoxAction(3) on Linux
The text 318a1ee939ec, as Debian 4.0 (Etch) shipped it.
The SoGetBoundingBoxAction class calculates bounding boxes for nodes and subgraphs. The use of bounding boxes is ubiquitous within the Coin library. It is needed for the correct execution of and for performance enhancements during rendering, picking, caching, culling, etc.