SoSearchAction(3) on Linux
The text 0d25fc540d32, as Debian 8 (Jessie) shipped it.
The SoSearchAction class provides methods for searching through scene graphs. Nodes can be searched for by pointer, type, and name, or a combination of those criteria. Types can be interpreted as exact types, or the type can match nodes derived from it. Every single node can be searched, or normal traversal rules can be followed when searching (this is especially important to note with regard to switch nodes).