diff --git a/index.html b/index.html
index 0562f0db..263577c0 100644
--- a/index.html
+++ b/index.html
@@ -5859,6 +5859,28 @@
             </div>
           </div>
         </div>
+        <div data-tip="Move all existing towns to the 'largetown' burg group">
+          <input id="submapPromoteTowns" class="checkbox" type="checkbox" />
+          <label for="submapPromoteTowns" class="checkbox-label">Promote towns to largetowns</label>
+        </div>
+        <div data-tip="Add lakes in depressions. (Can be very slow on big landmasses!)">
+          <input id="submapAddLakeInDepression" class="checkbox" type="checkbox" />
+          <label for="submapAddLakeInDepression" class="checkbox-label">Add lakes in depressions (slow)</label>
+        </div>
+        <hr />
+      </div>
+
+      <div id="alert" style="display: none" class="dialog">
+        <p id="alertMessage">Warning!</p>
+      </div>
+
+      <div id="prompt" style="display: none" class="dialog">
+        <form id="promptForm">
+          <div id="promptText"></div>
+          <input id="promptInput" type="number" step=".01" placeholder="type value" autocomplete="off" />
+          <button type="submit">Confirm</button>
+          <button type="button" id="promptCancel" formnovalidate>Cancel</button>
+        </form>
       </div>
 
       <div id="saveTilesScreen" style="display: none" class="dialog">
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