Update for Meta data.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@7361 6f19259b-4bc3-4df7-8a09-765794883524

MdeModulePkg/Universal/Metronome/Metronome.inf

@@ -1,6 +1,15 @@
 #/** @file
-# This module produces the Metronome Architectural Protocol on top of an instance
-# of the Timer Library defined in the MdePkg.
+# This module produces the Metronome Architectural Protocol on top of Timer Library.
+#
+# This is a generic implementation of the Metronome Architectural Protocol that
+# layers on top of an instance of the Timer Library.  The Timer Library provides
+# functions for nanosecond and microsecond delays.  This generic implementation
+# produces a fixed TickPeriod of 100ns unit, and when the WaitForTick() service
+# is called, the number of ticks passed in is converted to either nanosecond or
+# microsecond units.  If the number of ticks is small, then nanoseconds are used.
+# If the number of ticks is large, then microseconds are used.  This prevents
+# overflows that could occur for long delays if only nanoseconds were used and also
+# provides the greatest accuracy for small delays. 
 #
 # Copyright (c) 2008, Intel Corporation                                                         
 # All rights reserved. This program and the accompanying materials                          
@@ -41,7 +50,7 @@
   Metronome.h
 
 [Protocols]
-  gEfiMetronomeArchProtocolGuid
+  gEfiMetronomeArchProtocolGuid      ## PRODUCES
 
 [Depex]
   TRUE