SoLockManager(3) on Linux
The text 39fef30c8786, as Debian 4.0 (Etch) shipped it.
The SoLockManager is a defunct software license lock mechanism. This is just a dummy implementation of the TGS Inventor class used to provide a license locking mechanism. Since Coin can be used without any royalty fees or client-site license locks, no such mechanism is needed.