Subject: new draft

From: "Marc Snir" <[email-masked]>
Date: Tue, 23 Mar 93 22:49:11 EST

Has few changes w.r.t. previous draft, mostly typos and clarifications, or
alternative proposals acknowledged in dicussion parts.

Thanks to James Cownie, Jon Flower, Rik Littlefield, Eric Barszcz, Tom
Henderson, and whoever else I forgot, for corrections and suggestions.