XmVaCreateManagedText(3) on Linux
The text 833af123e201, as Debian 13 (Trixie), Debian 12 (Bookworm), Debian 11 (Bullseye), Debian 10 (Buster), Debian 9 (Stretch), Debian 8 (Jessie) shipped it.
A Text widget convenience creation functions. "XmVaCreateToggleText" "XmVaCreateManagedText" "creation functions" "XmVaCreateText"