diff --git a/MdePkg/Include/Library/PeiCoreEntryPoint.h b/MdePkg/Include/Library/PeiCoreEntryPoint.h
index 9c0acd0109..4d38468685 100644
--- a/MdePkg/Include/Library/PeiCoreEntryPoint.h
+++ b/MdePkg/Include/Library/PeiCoreEntryPoint.h
@@ -47,7 +47,9 @@ _ModuleEntryPoint(
   );
 
 /**
-  Wrapper of enrty point to PEI core.
+  Required by the EBC compiler and identical in functionality to _ModuleEntryPoint().
+
+  This function is required to call _ModuleEntryPoint() passing in SecCoreData and PpiList.
 
   @param SecCoreData    Points to a data structure containing
                         information about the PEI core's
@@ -79,7 +81,11 @@ EfiMain (
   );
 
 /**
-  Call constructs for all libraries. Automatics Generated by tool.
+  Autogenerated function that calls the library constructors for all of the module's
+  dependent libraries.
+
+  This function must be called by the PEI Core once an initial PEI Services Table has
+  been established.
 
   @param  FileHandle  Handle of the file being invoked. 
                       Type EFI_PEI_FILE_HANDLE is defined in FfsFindNextFile().
@@ -95,7 +101,9 @@ ProcessLibraryConstructorList (
 
 
 /**
-  Call the list of driver entry points. Automatics Generated by tool.
+  Autogenerated function that calls a set of module entry points.
+
+  This function must be called by _ModuleEntryPoint().
 
   @param SecCoreData    Points to a data structure containing
                         information about the PEI core's