How about "No linguistic content"?
We would need to conduct a ballot of the JAC voting members.
On Mon, 13 Jun 2005, Michael Everson wrote:
> At 23:14 -0700 2005-06-12, Peter Constable wrote:
> > > From: ISO 639 Joint Advisory Committee [mailto:[log in to unmask]] On Behalf
> >> Of Michael Everson
> >> Propose it, and let it be accepted.
> >I propose that we define "Zxx" as a special-use identifier for
> >"non-language information".
> I propose that it be defined a little more clearly than that.
> "Non-language"? Non-linguistic? Information? Content?
> Michael Everson * * Everson Typography * * http://www.evertype.com