Call out IDLE Fork in startup message.
diff --git a/Lib/idlelib/PyShell.py b/Lib/idlelib/PyShell.py
index 407eedd..cab7328 100644
--- a/Lib/idlelib/PyShell.py
+++ b/Lib/idlelib/PyShell.py
@@ -470,7 +470,7 @@
 
     def begin(self):
         self.resetoutput()
-        self.write("Python %s on %s\n%s\nIDLE %s -- press F1 for help\n" %
+        self.write("Python %s on %s\n%s\nIDLE Fork %s -- press F1 for help\n" %
                    (sys.version, sys.platform, self.COPYRIGHT,
                     idlever.IDLE_VERSION))
         try: