MrmOpenHierarchy(3) on Linux
The text 9e39b18faeec, as Debian 13 (Trixie), Debian 12 (Bookworm), Debian 11 (Bullseye), Debian 10 (Buster), Debian 9 (Stretch), Debian 8 (Jessie) shipped it.
Allocates a hierarchy ID and opens all the UID files in the hierarchy "MrmOpenHierarchy" "uil functions" "MrmOpenHierarchy"