XmVaCreateScrollBar(3) on Linux
The text 4457cd2c881a, as Debian 13 (Trixie), Debian 12 (Bookworm), Debian 11 (Bullseye), Debian 10 (Buster), Debian 9 (Stretch), Debian 8 (Jessie) shipped it.
A ScrollBar widget convenience creation functions. "XmVaCreateToggleScrollBar" "XmVaCreateManagedScrollBar" "creation functions" "XmVaCreateScrollBar"