Remove things specific to the old Macintosh, and spell "Mac OS X" consistently.
diff --git a/Doc/library/framework.rst b/Doc/library/framework.rst
index 71a07c1..ea58c05 100644
--- a/Doc/library/framework.rst
+++ b/Doc/library/framework.rst
@@ -206,7 +206,7 @@
 
 .. method:: Window.open()
 
-   Override this method to open a window. Store the MacOS window-id in
+   Override this method to open a window. Store the Mac OS window-id in
    :attr:`self.wid` and call the :meth:`do_postopen` method to register the window
    with the parent application.