TAU_REGISTER_FORK(3) on Linux
The text 06275e0d5347, as Debian 9 (Stretch), Debian 8 (Jessie), Debian 7 (Wheezy), Debian 6.0 (Squeeze), Debian 4.0 (Etch) shipped it. The page shows this text now.
Informs the measurement system that a fork has taken place