DOCS-487 updated Indexes sign-post

Author: Bob Grabar

source/indexes.txt

@@ -4,15 +4,21 @@
 Indexes
 =======
 
-MongoDB's indexes make it possible to provide high performance read
-operations for frequently used queries. Indexes are particularly
-useful where the total size of the documents exceeds the amount of
-available RAM. This section has three main documents:
-:doc:`/core/indexes` that explains basic indexing concepts and
-options. :doc:`/administration/indexes` that outlines procedures and
-operational concerns relevant to indexing. And
-:doc:`/applications/indexes` that introduces how applications may
-use indexes.
+Indexes provide high performance read operations for frequently used
+queries. Indexes are particularly useful where the total size of the
+documents exceeds the amount of available RAM.
+
+This page lists the main documents that describe indexes.
+
+For basic concepts and options, see :doc:`/core/indexes`. For procedures
+and operational concerns, see :doc:`/administration/indexes`. For
+information on how applications might use indexes, see
+:doc:`/applications/indexes`.
+
+Documentation
+-------------
+
+The following is the expanded outline of the main documentation:
 
 .. toctree::
    :maxdepth: 2