diff --git a/clang/docs/Modules.rst b/clang/docs/Modules.rst
--- a/clang/docs/Modules.rst
+++ b/clang/docs/Modules.rst
@@ -7,6 +7,8 @@
 
 Introduction
 ============
+This pages mainly talks about Clang Modules, please refer to .. _StandardCPlusPlusModules: StandardCPlusPlusModules.html if you're looking for standard C++ modules.
+
 Most software is built using a number of software libraries, including libraries supplied by the platform, internal libraries built as part of the software itself to provide structure, and third-party libraries. For each library, one needs to access both its interface (API) and its implementation. In the C family of languages, the interface to a library is accessed by including the appropriate header files(s):
 
 .. code-block:: c