Update 2 Apr 2021 -- schems has been up for over twenty years; it's not going away. The world is changing; we're adapting. Going forward, for copyright/legal reasons, full access to the archives will require login. We realize the change -- which came about unexpectedly on its own -- is an inconvenience, maybe a problem. But it is temporary. The required fix is underway with gusto. Register now for joy soon.