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    Prefer capitalised <br>
    ref:UK:uprn and ref:UK:usrn<br>
    <br>
    as wikipage for ref <a class="moz-txt-link-freetext" href="https://wiki.openstreetmap.org/wiki/Key:ref">https://wiki.openstreetmap.org/wiki/Key:ref</a>
    shows towards the end that US and FR are used to build up refs, FR
    has a page showing all their ref's
<a class="moz-txt-link-freetext" href="https://wiki.openstreetmap.org/wiki/France/Liste_des_r%C3%A9f%C3%A9rences_nationales">https://wiki.openstreetmap.org/wiki/France/Liste_des_r%C3%A9f%C3%A9rences_nationales</a><br>
    <br>
    Possibly of interest ISO 3166 allows for GB to be sudivided by local
    government area to produce eg<br>
    <br>
    <table id="subdivision" class="tablesorter">
      <tbody>
        <tr>
          <td>council area</td>
          <td>GB-ABE</td>
          <td>Aberdeen City</td>
          <td><br>
          </td>
          <td>en</td>
          <td><br>
          </td>
          <td><br>
          </td>
        </tr>
        <tr>
          <td>council area</td>
          <td>GB-ABD</td>
          <td>Aberdeenshire</td>
          <td><br>
          </td>
          <td>en</td>
          <td><br>
          </td>
          <td><br>
          </td>
        </tr>
        <tr>
          <td>council area</td>
          <td>GB-ANS</td>
          <td>Angus</td>
          <td><br>
          </td>
          <td>en</td>
          <td><br>
          </td>
          <td><br>
          </td>
        </tr>
        <tr>
          <td>district</td>
          <td>GB-ANN</td>
          <td>Antrim and Newtownabbey</td>
          <td><br>
          </td>
          <td>en</td>
        </tr>
      </tbody>
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    <div class="moz-cite-prefix"><br>
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    <div class="moz-cite-prefix">Not to be part of addr: but as
      standalone keys. <br>
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    <div class="moz-cite-prefix"><br>
    </div>
    <div class="moz-cite-prefix">I recognise coding could obviate the
      need for GB - but that's hard work , GB is easy and memorable and
      matches what other OSM'rs are doing, and extensible if other
      countries have keys with the same acronym.</div>
    <div class="moz-cite-prefix"><br>
    </div>
    <div class="moz-cite-prefix">Tony Shield<br>
    </div>
    <div class="moz-cite-prefix"><br>
    </div>
    <div class="moz-cite-prefix">On 09/04/2020 20:28, Dan S wrote:<br>
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    <blockquote type="cite"
cite="mid:CANuikkrAAan34Z34WqXiC0t2HMnxPVpCZvH6Gg47HsiCNYE6og@mail.gmail.com">
      <pre class="moz-quote-pre" wrap="">Op do 9 apr. 2020 om 19:47 schreef Lester Caine <a class="moz-txt-link-rfc2396E" href="mailto:lester@lsces.uk"><lester@lsces.uk></a>:
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        <pre class="moz-quote-pre" wrap="">
On 09/04/2020 15:32, Mark Goodge wrote:
</pre>
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            <pre class="moz-quote-pre" wrap="">So I'd propose that we use either ref:uprn and ref:usrn, or
ref:UK:uprn and ref:UK:usrn. What does everyone else think?
</pre>
          </blockquote>
          <pre class="moz-quote-pre" wrap="">
I'd be happy with either, so long as it's consistent.
</pre>
        </blockquote>
        <pre class="moz-quote-pre" wrap="">
That is ideal from my point of view ... yes you can get the country by
processing the location information, but being able to simply list all
of them WITHOUT the overhead of other processing has to be the right way
forward?
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      <pre class="moz-quote-pre" wrap="">
We could make such an argument about any tag, e.g. "addr:postcode"
couldn't we? Someone who wants a GB-only list can easily get them from
a GB extract such as Geofabrik's.

On the other hand I'm happy with "ref:gb:uprn" and "ref:gb:usrn" if
preferred (can we use lowercase for convenience please?) since it
seems these terms are not global.

Best
Dan

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