SF #829941, update tutorial, built-in types can be base classes since 2.2

diff --git a/Doc/tut/tut.tex b/Doc/tut/tut.tex
index 0054b1f41e9fae62ff823fae5b12440e6833e953..e6017b07b2552b6d916bf0eb1360b58f6fe84760 100644 (file)
--- a/Doc/tut/tut.tex
+++ b/Doc/tut/tut.tex
@@ -3550,8 +3550,8 @@ method function is declared with an explicit first argument
 representing the object, which is provided implicitly by the call.  As
 in Smalltalk, classes themselves are objects, albeit in the wider
 sense of the word: in Python, all data types are objects.  This
-provides semantics for importing and renaming.  But, just like in
-\Cpp{} or Modula-3, built-in types cannot be used as base classes for
+provides semantics for importing and renaming.  Unlike 
+\Cpp{} and Modula-3, built-in types can be used as base classes for
 extension by the user.  Also, like in \Cpp{} but unlike in Modula-3, most
 built-in operators with special syntax (arithmetic operators,
 subscripting etc.) can be redefined for class instances.