Zinh - Code for inherited script

[Randy Presuhn]

Hi -

> From: "Doug Ewell" <doug at ewellic.org>
> To: <ietf-languages at iana.org>
> Sent: Wednesday, February 25, 2009 5:56 AM
> Subject: Changes to reflect ISO 15924
...
> Note that "Code for inherited script" is a particularly odd bird from 
> the standpoint of BCP 47, and probably won't see much use there.  It was 
> added for a specific reason involving a Unicode specification.
...
> LANGUAGE SUBTAG REGISTRATION FORM
> 
> 1. Name of requester: Doug Ewell
> 2. E-mail address of requester: doug at ewellic.org
> 3. Record Requested:
> 
>    Type: script
>    Subtag: Zinh
>    Description: Code for inherited script
>    Added: 2009-03-11
>    Comments:
> 
> 4. Intended meaning of the subtag:
> 
> 5. Reference to published description
>    of the language (book or article):
> 
> 6. Any other relevant information:
> 
>    This subtag corresponds to an ISO 15924 code element for "Code for
>    inherited script" added 2009-02-23.
> 
> ===
...

Could someone explain just what 'Zinh' is?  The description provided in
the registration request didn't enlighten me.  Could someone provide a use
case for it as a script subtag?

Randy