XmListSetBottomPos(3) on Linux
The text 3f6e591646c3, as Debian 13 (Trixie), Debian 12 (Bookworm), Debian 11 (Bullseye), Debian 10 (Buster), Debian 9 (Stretch), Debian 8 (Jessie) shipped it.
A List function that makes a specified item the last visible item in the list "XmListSetBottomPos" "List functions" "XmListSetBottomPos"