XmVaCreateTabStack(3) on Linux
The text 0357c8d0c711, as Debian 13 (Trixie), Debian 12 (Bookworm), Debian 11 (Bullseye), Debian 10 (Buster), Debian 9 (Stretch), Debian 8 (Jessie) shipped it.
A TabStack widget convenience creation functions. "XmVaCreateToggleTabStack" "XmVaCreateManagedTabStack" "creation functions" "XmVaCreateTabStack"