XmTransferSendRequest(3) on Linux
The text fa9e4c1f2304, as Debian 13 (Trixie), Debian 12 (Bookworm), Debian 11 (Bullseye), Debian 10 (Buster), Debian 9 (Stretch), Debian 8 (Jessie) shipped it.
A toolkit function that transfers a MULTIPLE request "XmTransferSendRequest" "toolkit functions" "XmTransferSendRequest"