<p></p>
<p><b>@AntonKhorev</b> commented on this pull request.</p>

<hr>

<p>In <a href="https://github.com/openstreetmap/openstreetmap-website/pull/6149#discussion_r2268487363">app/assets/javascripts/router.js</a>:</p>
<pre style='color:#555'>> @@ -7,8 +7,10 @@
   of the above pages support.
 
   The router is initialized with a set of routes: a mapping of URL path templates
-  to route controller objects. Path templates can contain placeholders
-  (`/note/:id`) and optional segments (`/:type/:id(/history)`).
+  to route controller objects. Path templates can contain
+    placeholders (`/note/:id`),
+    scoped placeholders (`/type:node way relation/:id`) and
</pre>
<p dir="auto">The current syntax is similar to Rails routes:</p>
<ul dir="auto">
<li><a href="https://api.rubyonrails.org/classes/ActionDispatch/Routing/Mapper/Base.html#method-i-match" rel="nofollow">https://api.rubyonrails.org/classes/ActionDispatch/Routing/Mapper/Base.html#method-i-match</a></li>
<li><a href="https://guides.rubyonrails.org/routing.html#non-resourceful-routes" rel="nofollow">https://guides.rubyonrails.org/routing.html#non-resourceful-routes</a></li>
</ul>
<p dir="auto">If we want to stick to that, we need something like <a href="https://guides.rubyonrails.org/routing.html#segment-constraints" rel="nofollow">segment constraints</a>.</p>

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