add clarity (hopefully--please review)

doc/Language/classtut.pod6

@@ -107,23 +107,23 @@ X<|type object>
 X<|defined>
 X<|.defined>
 
-Declaring a class creates a I<type object> which, by default, is installed into
+Declaring a class creates a new I<type object> which, by default, is installed into
 the current package (just like a variable declared with C<our> scope).  This
 type object is an "empty instance" of the class. For example, types such as
 C<Int> and C<Str> refer to the type object of one of the Perl 6 built-in
 classes. The example above uses the class name C<Task> so that other code can
 refer to it later, such as to create class instances by calling the C<new>
 method.
 
-Type objects are I<undefined>, in the sense that they return C<False> if you
+Built-in type objects are I<undefined>, in the sense that they return C<False> if you
 call the C<.defined> method on them. You can use this method to find out if
 a given object is a type object or not:
 
     my $obj = Int;
     if $obj.defined {
-        say "Ordinary, defined object";
+        say "Ordinary, user-defined object";
     } else {
-        say "Type object";
+        say "Built-in type object";
     }
 
 =head1 State