diff --git a/AppPkg/AppPkg.dsc b/AppPkg/AppPkg.dsc
index 6e2fa720b5..7bc8f85d92 100644
--- a/AppPkg/AppPkg.dsc
+++ b/AppPkg/AppPkg.dsc
@@ -93,7 +93,8 @@
 
 [LibraryClasses.IA32]
   TimerLib|PerformancePkg/Library/DxeTscTimerLib/DxeTscTimerLib.inf
-  ## Comment out the above line and un-comment the line below for running under Nt32 emulation.
+  # To run in an emulation environment, such as Nt32Pkg, comment out the TimerLib
+  # description above and un-comment the line below.
 #  TimerLib|MdePkg/Library/BaseTimerLibNullTemplate/BaseTimerLibNullTemplate.inf
 
 [LibraryClasses.X64]
@@ -141,7 +142,9 @@
   AppPkg/Applications/Hello/Hello.inf        # No LibC includes or functions.
   AppPkg/Applications/Main/Main.inf          # Simple invocation. No other LibC functions.
   AppPkg/Applications/Enquire/Enquire.inf
-  AppPkg/Applications/Python/PythonCore.inf
+
+# After extracting the Python distribution, un-comment the following line to build Python.
+#  AppPkg/Applications/Python/PythonCore.inf
 
 ################################################################
 #
@@ -155,8 +158,8 @@
     GCC:*_*_*_CC_FLAGS      = -ffreestanding -nostdinc -nostdlib
 
 # The Build Options, below, are only used when building the C library
-# to be run under the NT32 emulation.  They disable the clock() system call
-# which is currently incompatible with the NT32 environment.
+# to be run under an emulation environment, such as Nt32Pkg.  The clock()
+# system call is modified to return -1 indicating that it is unsupported.
 # Just uncomment the lines below and select the correct TimerLib instance, above.
 
   # INTEL:*_*_IA32_CC_FLAGS     = /D NT32dvm
diff --git a/AppPkg/Applications/Python/PythonCore.inf b/AppPkg/Applications/Python/PythonCore.inf
index 79a30e0f1e..31e5442445 100644
--- a/AppPkg/Applications/Python/PythonCore.inf
+++ b/AppPkg/Applications/Python/PythonCore.inf
@@ -17,7 +17,7 @@
 [Defines]
   INF_VERSION                    = 0x00010006
   BASE_NAME                      = Python
-  FILE_GUID                      = 42f58b27-5dc3-4fa7-844d-5a7dbff06432
+  FILE_GUID                      = ca5627c4-51ba-4dcb-ac62-c076ebd37ddb
   MODULE_TYPE                    = UEFI_APPLICATION
   VERSION_STRING                 = 0.1
   ENTRY_POINT                    = ShellCEntryLib
@@ -228,11 +228,6 @@
 #EFI -- EFI specific code
   Efi/config.c
   Efi/getpathp.c
-#  Efi/_subprocess.c
-#  Efi/_winreg.c
-#  Efi/dl_nt.c
-#  Efi/import_nt.c
-#  Efi/msvcrtmodule.c
 
 [BuildOptions]
    MSFT:*_*_*_CC_FLAGS            = /Oi- /wd4018 /wd4054 /wd4055 /wd4101 /wd4131 /wd4152 /wd4204 /wd4210 /wd4244 /wd4267 /wd4305 /wd4310 /wd4389 /wd4701 /wd4702 /wd4706 /I%WORKSPACE%\AppPkg\Applications\Python\Ia32 /I%WORKSPACE%\AppPkg\Applications\Python\Python-2.7.1\Include
diff --git a/AppPkg/ReadMe.pdf b/AppPkg/ReadMe.pdf
index 9dc6c0aae9..2ed66168ab 100644
Binary files a/AppPkg/ReadMe.pdf and b/AppPkg/ReadMe.pdf differ