I originally picked "under" as the preposition to go before
a platform name, but obviously you should build "on" a
platform, and "under" suddenly annoys me. The choice of "on"
is now codified in the documentation style guide. Meanwhile,
"Unix" insted of "X" seems more clear and consistent in the
`racket/gui' docs.
More usefully, this patch also fixes a few out-of-date
platform-specific claims.
replaced with `use-https' which defaults to #t. If the web server is
disabled, run a tiny "server" that spits out a message -- to avoid
students complaining that something is broken.
Configuration files with `https-port-number' will throw an error, and
should be upgraded.
svn: r17450
