Issue #15663: Revert OS X installer built-in Tcl/Tk support for 3.3.3.
Some third-party projects, such as matplotlib and PIL/Pillow,
depended on being able to build with Tcl and Tk frameworks in
/Library/Frameworks.  They were unable to build with the built-in
Tcl/Tk and/or execute correctly.
diff --git a/Mac/BuildScript/resources/Welcome.rtf b/Mac/BuildScript/resources/Welcome.rtf
index c3b4b7c..239d76e 100644
--- a/Mac/BuildScript/resources/Welcome.rtf
+++ b/Mac/BuildScript/resources/Welcome.rtf
@@ -25,7 +25,11 @@
 \b0  at any time to make $FULL_VERSION the default Python 3 version.  This version can co-exist with other installed versions of Python 3 and Python 2.\
 \
 
-\b IMPORTANT for users of IDLE and tkinter:
-\b0  As of Python 3.3.3, it is no longer necessary to install third-party versions of the 
+\b IMPORTANT:
+\b0  
+\b IDLE
+\b0  and other programs using the 
+\b tkinter
+\b0  graphical user interface toolkit require specific versions of the 
 \b Tcl/Tk
-\b0  platform independent windowing toolkit.  Please read the ReadMe file and visit {\field{\*\fldinst{HYPERLINK "http://www.python.org/download/mac/tcltk/"}}{\fldrslt http://www.python.org/download/mac/tcltk/}} for more information on supported and recommended versions of Tcl/Tk for this version of Python and Mac OS X.}
\ No newline at end of file
+\b0  platform independent windowing toolkit.  Visit {\field{\*\fldinst{HYPERLINK "http://www.python.org/download/mac/tcltk/"}}{\fldrslt http://www.python.org/download/mac/tcltk/}} for current information on supported and recommended versions of Tcl/Tk for this version of Python and Mac OS X.}
\ No newline at end of file