The site, the README and the wiki take the screen's row names and the
--check pass line from install.py, and the wiki's line menu example is
written by generate_installer_doc from the function line mode runs.
which-pack describes the full screen the one-liner opens instead of a line
menu typed by hand. The systems question lays out in 80 columns under
Python 3.8, whose pty reports no width, and a test no longer reads the
host's drives.