Writing standard-conforming iterators is tricky, but the need comes up often. In order to ease the implementation of new iterators, -the Boost.Iterator library provides the iterator_facade class template, +the Boost.Iterator library provides the iterator_facade class template, which implements many useful defaults and compile-time checks designed to help the author iterator ensure that his iterator is correct.
It is also common to define a new iterator that is similar to some underlying iterator or iterator-like type, but that modifies some aspect of the underlying type's behavior. For that purpose, the -library supplies the iterator_adaptor class template, which is specially +library supplies the iterator_adaptor class template, which is specially designed to take advantage of as much of the underlying type's behavior as possible.
-Both iterator_facade and iterator_adaptor as well as many of the specialized
+ The documentation for these two classes can be found at the following
+web pages: Both iterator_facade and iterator_adaptor as well as many of the specialized
adaptors mentioned below have been proposed for standardization,
and accepted into the first C++ technical report; see our
@@ -220,7 +226,7 @@ LocalWords: TraversalTag typename lvalues DWA Hmm JGS -->