PR-2275 alternate fix

source/tutorial/model-tree-structures-with-materialized-paths.txt

@@ -77,14 +77,14 @@ storing the path in the field ``path``; the path string uses the comma
 
   This index may improve performance depending on the query:
 
-  - For queries of the ``Books`` sub-tree (e.g. ``/^,Books,/``) an
-    index on the ``path`` field improves the query performance
-    significantly.
-
-  - For queries of the ``Programming`` sub-tree
-    (e.g. ``/,Programming,/``), or similar queries of sub-trees, where
-    the node might be in the middle of the indexed string, the query
-    must inspect the entire index.
+  - For queries from the root ``Books`` sub-tree (e.g. ``/^,Books,/``
+    or ``/^,Books,Programming,/``), an index on the ``path`` field
+    improves the query performance significantly.
+
+  - For queries of sub-trees where the path from the root is not
+    provided in the query (e.g. ``/,Databases,/``), or similar queries
+    of sub-trees, where the node might be in the middle of the indexed
+    string, the query must inspect the entire index.
 
     For these queries an index *may* provide some performance
     improvement *if* the index is significantly smaller than the