MrmCloseHierarchy(3) on Linux
The text 9edec1c54151, as Debian 13 (Trixie), Debian 12 (Bookworm), Debian 11 (Bullseye), Debian 10 (Buster), Debian 9 (Stretch), Debian 8 (Jessie) shipped it.
Closes a UID hierarchy "MrmCloseHierarchy" "uil functions" "MrmCloseHierarchy" "uid hierarchy"