XmVaCreateSimplePopupMenu(3) on Linux
The text 5a9016758089, as Debian 13 (Trixie), Debian 12 (Bookworm), Debian 11 (Bullseye), Debian 10 (Buster), Debian 9 (Stretch), Debian 8 (Jessie) shipped it.
A RowColumn widget convenience creation function "XmVaCreateSimplePopup\%Menu" "creation functions" "XmVaCreateSimplePopup\%Menu"