#11669: rephrase footnote in the Compound Statements page.

Doc/reference/compound_stmts.rst

@@ -562,8 +562,9 @@ which is then bound to the class name.
 
 .. rubric:: Footnotes
 
-.. [#] The exception is propagated to the invocation stack only if there is no
-   :keyword:`finally` clause that negates the exception.
+.. [#] The exception is propagated to the invocation stack unless
+   there is a :keyword:`finally` clause which happens to raise another
+   exception. That new exception causes the old one to be lost.
 
 .. [#] Currently, control "flows off the end" except in the case of an exception or the
    execution of a :keyword:`return`, :keyword:`continue`, or :keyword:`break`