diff -r 88a9ee79c102 -r a06a2d27c043 docs/Writerside/ucx.tree
--- a/docs/Writerside/ucx.tree	Thu Jan 23 01:15:52 2025 +0100
+++ b/docs/Writerside/ucx.tree	Thu Jan 23 01:33:36 2025 +0100
@@ -7,6 +7,35 @@
                  start-page="about.md">
     <toc-element topic="about.md"/>
     <toc-element topic="features.md">
+        <toc-element topic="collections.md">
+            <toc-element topic="collection.h.md"/>
+            <toc-element topic="iterator.h.md"/>
+            <toc-element topic="list.h.md"/>
+            <toc-element topic="array_list.h.md"/>
+            <toc-element topic="linked_list.h.md"/>
+            <toc-element topic="map.h.md"/>
+            <toc-element topic="hash_key.h.md"/>
+            <toc-element topic="hash_map.h.md"/>
+            <toc-element topic="tree.h.md"/>
+        </toc-element>
+        <toc-element topic="memory.md">
+            <toc-element topic="allocator.h.md"/>
+            <toc-element topic="mempool.h.md"/>
+        </toc-element>
+        <toc-element topic="parsers.md">
+            <toc-element topic="json.h.md"/>
+            <toc-element topic="properties.h.md"/>
+        </toc-element>
+        <toc-element topic="strings.md">
+            <toc-element topic="string.h.md"/>
+            <toc-element topic="buffer.h.md"/>
+            <toc-element topic="printf.h.md"/>
+        </toc-element>
+        <toc-element topic="utils.md">
+            <toc-element topic="compare.h.md"/>
+            <toc-element topic="streams.h.md"/>
+            <toc-element topic="test.h.md"/>
+        </toc-element>
     </toc-element>
     <toc-element topic="install.md"/>
     <toc-element topic="license.md" />