I think saying "lexical (my), and dynamic (use vars, our (with caveats), undeclared (except under use strict), all subs, direct playing with globs (see below), filehandles/dirhandles, and formats)" would do the trick. You might just want to say "(all others)" instead of listing all of those.
Also, more importantly, you've got a terminology mismatch in the whole document: symbol tables aren't like hashes, they are hashes. %main:: (AKA %::, which you might want to mention explicitly) is a hash. *main::{somevar} isn't a hash, it's a hash element, which contains a glob, which is like a hash in many ways.
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