VendorShell(3) on Linux
The text 149608f3ac3c, as Debian 13 (Trixie), Debian 12 (Bookworm), Debian 11 (Bullseye), Debian 10 (Buster), Debian 9 (Stretch), Debian 8 (Jessie) shipped it.
The VendorShell widget class "VendorShell" "widget class" "VendorShell"