diff --git a/Doc/library/site.rst b/Doc/library/site.rst
index e249bab4fa2..6beda84c145 100644
--- a/Doc/library/site.rst
+++ b/Doc/library/site.rst
@@ -99,7 +99,11 @@ After these path manipulations, an attempt is made to import a module named
 :mod:`sitecustomize`, which can perform arbitrary site-specific customizations.
 It is typically created by a system administrator in the site-packages
 directory.  If this import fails with an :exc:`ImportError` exception, it is
-silently ignored.
+silently ignored.  If Python is started without output streams available, as
+with :file:`pythonw.exe` on Windows (which is used by default to start IDLE),
+attempted output from :mod:`sitecustomize` is ignored. Any exception other
+than :exc:`ImportError` causes a silent and perhaps mysterious failure of the
+process.
 
 .. index:: module: usercustomize
 
diff --git a/Misc/ACKS b/Misc/ACKS
index 2aa087e9f33..64b701f1b36 100644
--- a/Misc/ACKS
+++ b/Misc/ACKS
@@ -1427,6 +1427,7 @@ Gerald S. Williams
 Jason Williams
 John Williams
 Sue Williams
+Carol Willing
 Steven Willis
 Frank Willison
 Geoff Wilson