diff --git a/include/boost/range/algorithm/fill_n.hpp b/include/boost/range/algorithm/fill_n.hpp
index f827135..29d7d6f 100755
--- a/include/boost/range/algorithm/fill_n.hpp
+++ b/include/boost/range/algorithm/fill_n.hpp
@@ -26,6 +26,7 @@ namespace boost
 /// range-based version of the fill_n std algorithm
 ///
 /// \pre ForwardRange is a model of the ForwardRangeConcept
+/// \pre n <= std::distance(boost::begin(rng), boost::end(rng))
 template< class ForwardRange, class Size, class Value >
 inline ForwardRange& fill_n(ForwardRange& rng, Size n, const Value& val)
 {
diff --git a/include/boost/range/algorithm_ext/erase.hpp b/include/boost/range/algorithm_ext/erase.hpp
index 3b0e037..107d32b 100755
--- a/include/boost/range/algorithm_ext/erase.hpp
+++ b/include/boost/range/algorithm_ext/erase.hpp
@@ -24,29 +24,32 @@ namespace boost
     {
 
 template< class Container >
-inline void erase( Container& on,
+inline Container& erase( Container& on,
       iterator_range<BOOST_DEDUCED_TYPENAME Container::iterator> to_erase )
 {
     BOOST_RANGE_CONCEPT_ASSERT(( ForwardRangeConcept<Container> ));
     on.erase( boost::begin(to_erase), boost::end(to_erase) );
+    return on;
 }
 
 template< class Container, class T >
-inline void remove_erase( Container& on, const T& val )
+inline Container& remove_erase( Container& on, const T& val )
 {
     BOOST_RANGE_CONCEPT_ASSERT(( ForwardRangeConcept<Container> ));
     on.erase(
         std::remove(boost::begin(on), boost::end(on), val),
         boost::end(on));
+    return on;
 }
 
 template< class Container, class Pred >
-inline void remove_erase_if( Container& on, Pred pred )
+inline Container& remove_erase_if( Container& on, Pred pred )
 {
     BOOST_RANGE_CONCEPT_ASSERT(( ForwardRangeConcept<Container> ));
     on.erase(
         std::remove_if(boost::begin(on), boost::end(on), pred),
         boost::end(on));
+    return on;
 }
 
     } // namespace range
diff --git a/include/boost/range/algorithm_ext/insert.hpp b/include/boost/range/algorithm_ext/insert.hpp
index a887f15..b9adfdd 100755
--- a/include/boost/range/algorithm_ext/insert.hpp
+++ b/include/boost/range/algorithm_ext/insert.hpp
@@ -23,15 +23,16 @@ namespace boost
     {
 
 template< class Container, class Range >
-inline void insert( Container& on,
-                    BOOST_DEDUCED_TYPENAME Container::iterator before,
-                    const Range& from )
+inline Container& insert( Container& on,
+                          BOOST_DEDUCED_TYPENAME Container::iterator before,
+                          const Range& from )
 {
     BOOST_RANGE_CONCEPT_ASSERT(( ForwardRangeConcept<Container> ));
     BOOST_RANGE_CONCEPT_ASSERT(( SinglePassRangeConcept<Range> ));
     BOOST_ASSERT( (void*)&on != (void*)&from &&
                   "cannot copy from a container to itself" );
     on.insert( before, boost::begin(from), boost::end(from) );
+    return on;
 }
 
     } // namespace range
diff --git a/include/boost/range/algorithm_ext/iota.hpp b/include/boost/range/algorithm_ext/iota.hpp
index 4a03a59..65cbc89 100644
--- a/include/boost/range/algorithm_ext/iota.hpp
+++ b/include/boost/range/algorithm_ext/iota.hpp
@@ -22,7 +22,7 @@ namespace boost
     {
 
 template< class ForwardRange, class Value >
-inline void iota( ForwardRange& rng, Value x )
+inline ForwardRange& iota( ForwardRange& rng, Value x )
 {
     BOOST_CONCEPT_ASSERT(( ForwardRangeConcept<ForwardRange> ));
     typedef BOOST_DEDUCED_TYPENAME range_iterator<ForwardRange>::type iterator_t;
@@ -30,6 +30,8 @@ inline void iota( ForwardRange& rng, Value x )
     iterator_t last_target = ::boost::end(rng);
     for (iterator_t target = ::boost::begin(rng); target != last_target; ++target, ++x)
         *target = x;
+
+    return rng;
 }
 
     } // namespace range
diff --git a/include/boost/range/algorithm_ext/push_back.hpp b/include/boost/range/algorithm_ext/push_back.hpp
index e52de41..51a7a7b 100755
--- a/include/boost/range/algorithm_ext/push_back.hpp
+++ b/include/boost/range/algorithm_ext/push_back.hpp
@@ -23,13 +23,14 @@ namespace boost
     {
 
 template< class Container, class Range >
-inline void push_back( Container& on, const Range& from )
+inline Container& push_back( Container& on, const Range& from )
 {
     BOOST_RANGE_CONCEPT_ASSERT(( SinglePassRangeConcept<Container> ));
     BOOST_RANGE_CONCEPT_ASSERT(( SinglePassRangeConcept<const Range> ));
     BOOST_ASSERT( (void*)&on != (void*)&from &&
                   "cannot copy from a container to itself" );
     on.insert( on.end(), boost::begin(from), boost::end(from) );
+    return on;
 }
 
     } // namespace range
diff --git a/include/boost/range/algorithm_ext/push_front.hpp b/include/boost/range/algorithm_ext/push_front.hpp
index 6ee269b..470d793 100755
--- a/include/boost/range/algorithm_ext/push_front.hpp
+++ b/include/boost/range/algorithm_ext/push_front.hpp
@@ -23,13 +23,14 @@ namespace boost
     {
 
 template< class Container, class Range >
-inline void push_front( Container& on, const Range& from )
+inline Container& push_front( Container& on, const Range& from )
 {
     BOOST_RANGE_CONCEPT_ASSERT(( SinglePassRangeConcept<Container> ));
     BOOST_RANGE_CONCEPT_ASSERT(( SinglePassRangeConcept<const Range> ));
     BOOST_ASSERT( (void*)&on != (void*)&from &&
                   "cannot copy from a container to itself" );
     on.insert( on.begin(), boost::begin(from), boost::end(from) );
+    return on;
 }
 
     } // namespace range