<p></p>
<p><b>@gravitystorm</b> requested changes on this pull request.</p>

<p dir="auto">I agree it's worth having a warning for this link. It would be even better if the link was to the third-party website, for example pre-populating a form or something similar. That website could then take care of things like formats, warnings, etc.</p><hr>

<p>In <a href="https://github.com/openstreetmap/openstreetmap-website/pull/6411#discussion_r2375255566">app/assets/javascripts/index/export.js</a>:</p>
<pre style='color:#555'>> @@ -37,6 +37,55 @@ OSM.Export = function (map) {
     validateControls();
   }
 
+  async function showConfirmationModal(message) {
+    return new Promise((resolve) => {
+      const modalHtml = `
</pre>
<p dir="auto">This block of html should be in a erb view template. It might make sense to put it in the same view template as the overpass api link, since they are closely related.</p>

<hr>

<p>In <a href="https://github.com/openstreetmap/openstreetmap-website/pull/6411#discussion_r2375257435">config/locales/en.yml</a>:</p>
<pre style='color:#555'>> @@ -3531,6 +3531,11 @@ en:
       filename: "map"
     embed:
       report_problem: "Report a problem"
+    export:
+      header: Confirm
</pre>
<p dir="auto">This should describe the subject of the body, for example "Download XML Data" or something similar</p>

<hr>

<p>In <a href="https://github.com/openstreetmap/openstreetmap-website/pull/6411#discussion_r2375265680">config/locales/en.yml</a>:</p>
<pre style='color:#555'>> @@ -3531,6 +3531,11 @@ en:
       filename: "map"
     embed:
       report_problem: "Report a problem"
+    export:
+      header: Confirm
+      body: Do you want to download map data for this area in XML format? Note that large areas may take some time to download.
+      cancel: Cancel
+      ok: OK
</pre>
<p dir="auto">Please avoid using "OK" as button text. Instead we should use a verb for the action being taken, e.g. "Download" - see e.g. <a href="https://ux.stackexchange.com/a/9960" rel="nofollow">https://ux.stackexchange.com/a/9960</a></p>

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