XmDropSiteEndUpdate(3) on Linux
The text e09b38886be0, as Debian 13 (Trixie), Debian 12 (Bookworm), Debian 11 (Bullseye), Debian 10 (Buster), Debian 9 (Stretch), Debian 8 (Jessie) shipped it.
A Drag and Drop function that facilitates processing updates to multiple drop sites "XmDropSiteEndUpdate" "Drag and Drop functions" "XmDropSiteEndUpdate"