Tk_ComputeTextLayout(3tk) on Linux
The text 85b11eb5a661, as Debian 13 (Trixie), Debian 12 (Bookworm), Debian 11 (Bullseye), Debian 10 (Buster), Debian 9 (Stretch) shipped it. The page shows this text now.
routines to measure and display single-font, multi-line, justified text.