MrmOpenHierarchyFromBuffer(3) on Linux
The text 79d4f485fe4c, 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 a buffer containing a memory image of a UID file "MrmOpenHierarchyFrom\%Buffer" "uil functions" "MrmOpenHierarchyFrom\%Buffer"