Made many changes to setup.html

[Robert Collins]

----- Original Message -----
From: "Carl Ebrey" <carl@ebrey.net>
>
>
> Ah right, you don't want me to re-write it then? :)

Rewrite, no. provide fixups and additions and clarification, yes.

The thing about rewrites, is that (unless done v. carefully) they
usually introduce as much confusion as they solve. Incremental fixes are
often more effective.

Rob