diff --git a/doc/index.html b/doc/index.html
index 7e7dd9a..62274b6 100644
--- a/doc/index.html
+++ b/doc/index.html
@@ -131,6 +131,9 @@ is called to get the value to return.</li>
 <li><a class="reference external" href="function_output_iterator.html"><tt class="docutils literal"><span class="pre">function_output_iterator</span></tt></a> (<a class="reference external" href="function_output_iterator.pdf">PDF</a>): an output iterator wrapping a unary function
 object; each time an element is written into the dereferenced
 iterator, it is passed as a parameter to the function object.</li>
+<li><a class="reference external" href="generator_iterator.htm"><tt class="docutils literal"><span class="pre">generator_iterator</span></tt></a>: an input iterator wrapping a reference to a generator (nullary function object);
+each time the iterator is dereferenced, the function object
+is called to get the value to return. This is a more outdated analogue of <tt class="docutils literal"><span class="pre">function_input_iterator</span></tt>.</li>
 <li><a class="reference external" href="indirect_iterator.html"><tt class="docutils literal"><span class="pre">indirect_iterator</span></tt></a> (<a class="reference external" href="indirect_iterator.pdf">PDF</a>): an iterator over the objects <em>pointed-to</em> by the
 elements of some sequence.</li>
 <li><a class="reference external" href="permutation_iterator.html"><tt class="docutils literal"><span class="pre">permutation_iterator</span></tt></a> (<a class="reference external" href="permutation_iterator.pdf">PDF</a>): an iterator over the elements of some random-access
diff --git a/doc/index.rst b/doc/index.rst
index 7adab0b..8770b82 100644
--- a/doc/index.rst
+++ b/doc/index.rst
@@ -146,6 +146,10 @@ iterator templates based on the Boost `iterator facade and adaptor`_.
   object; each time an element is written into the dereferenced
   iterator, it is passed as a parameter to the function object.
 
+* |generator|_: an input iterator wrapping a generator (nullary
+  function object); each time the iterator is dereferenced, the function object
+  is called to get the value to return. This is an outdated analogue of |function_input|_.
+
 * |indirect|_ (PDF__): an iterator over the objects *pointed-to* by the
   elements of some sequence.
 
@@ -183,6 +187,9 @@ __ function_input_iterator.pdf
 .. _function_output: function_output_iterator.html
 __ function_output_iterator.pdf
 
+.. |generator| replace:: ``generator_iterator``
+.. _generator: generator_iterator.htm
+
 .. |indirect| replace:: ``indirect_iterator``
 .. _indirect: indirect_iterator.html
 __ indirect_iterator.pdf
diff --git a/doc/quickbook/function_output_iterator.qbk b/doc/quickbook/function_output_iterator.qbk
index 0baba0d..838ebde 100644
--- a/doc/quickbook/function_output_iterator.qbk
+++ b/doc/quickbook/function_output_iterator.qbk
@@ -35,7 +35,7 @@ proxy object.
 
       std::string s = "";
       std::copy(x.begin(), x.end(), 
-		boost::make_function_output_iterator(string_appender(s)));
+          boost::make_function_output_iterator(string_appender(s)));
 
       std::cout << s << std::endl;
 
@@ -97,4 +97,4 @@ Incrementable Iterator concepts.
 
 [*Returns: ] `*this`.
 
-[endsect]
\ No newline at end of file
+[endsect]
diff --git a/doc/quickbook/iterator.qbk b/doc/quickbook/iterator.qbk
index 6312309..6a20e33 100644
--- a/doc/quickbook/iterator.qbk
+++ b/doc/quickbook/iterator.qbk
@@ -112,7 +112,9 @@ templates.
 
 [def _counting_    [link iterator.specialized.counting `counting_iterator`]]
 [def _filter_      [link iterator.specialized.filter `filter_iterator`]]
-[def _function_    [link iterator.specialized.function_output `function_output_iterator`]]
+[def _function_input_ [@../function_input_iterator.html `function_input_iterator`]]
+[def _function_output_ [link iterator.specialized.function_output `function_output_iterator`]]
+[def _generator_   [@../generator_iterator.htm `generator_iterator`]]
 [def _indirect_    [link iterator.specialized.indirect `indirect_iterator`]]
 [def _permutation_ [link iterator.specialized.permutation `permutation_iterator`]]
 [def _reverse_     [link iterator.specialized.reverse `reverse_iterator`]]
@@ -128,10 +130,18 @@ templates.
 * _filter_: an iterator over the subset of elements of some
   sequence which satisfy a given predicate
 
-* _function_: an output iterator wrapping a unary function
+* _function_input_: an input iterator wrapping a generator (nullary
+  function object); each time the iterator is dereferenced, the function object
+  is called to get the value to return.
+
+* _function_output_: an output iterator wrapping a unary function
   object; each time an element is written into the dereferenced
   iterator, it is passed as a parameter to the function object.
 
+* _generator_: an input iterator wrapping a generator (nullary
+  function object); each time the iterator is dereferenced, the function object
+  is called to get the value to return. An outdated analogue of _function_input_.
+
 * _indirect_: an iterator over the objects *pointed-to* by the
   elements of some sequence.