diff --git a/Doc/lib/libcodecs.tex b/Doc/lib/libcodecs.tex
index 1806ef0..ac61743 100644
--- a/Doc/lib/libcodecs.tex
+++ b/Doc/lib/libcodecs.tex
@@ -112,6 +112,7 @@
 
 Raises a \exception{LookupError} in case the encoding cannot be found or the
 codec doesn't support an incremental encoder.
+\versionadded{2.5}
 \end{funcdesc}
 
 \begin{funcdesc}{getincrementaldecoder}{encoding}
@@ -120,6 +121,7 @@
 
 Raises a \exception{LookupError} in case the encoding cannot be found or the
 codec doesn't support an incremental decoder.
+\versionadded{2.5}
 \end{funcdesc}
 
 \begin{funcdesc}{getreader}{encoding}
@@ -229,12 +231,14 @@
 Uses an incremental encoder to iteratively encode the input provided by
 \var{iterable}. This function is a generator. \var{errors} (as well as
 any other keyword argument) is passed through to the incremental encoder.
+\versionadded{2.5}
 \end{funcdesc}
 
 \begin{funcdesc}{iterdecode}{iterable, encoding\optional{, errors}}
 Uses an incremental decoder to iteratively decode the input provided by
 \var{iterable}. This function is a generator. \var{errors} (as well as
 any other keyword argument) is passed through to the incremental encoder.
+\versionadded{2.5}
 \end{funcdesc}
 
 The module also provides the following constants which are useful
@@ -355,6 +359,8 @@
 
 \subsubsection{IncrementalEncoder Objects \label{incremental-encoder-objects}}
 
+\versionadded{2.5}
+
 The \class{IncrementalEncoder} class is used for encoding an input in multiple
 steps. It defines the following methods which every incremental encoder must
 define in order to be compatible to the Python codec registry.
diff --git a/Lib/codecs.py b/Lib/codecs.py
index 28856c7..ba03d14 100644
--- a/Lib/codecs.py
+++ b/Lib/codecs.py
@@ -156,13 +156,13 @@
 
 class IncrementalEncoder(object):
     """
-    A IncrementalEncoder encodes an input in multiple steps. The input can be
+    An IncrementalEncoder encodes an input in multiple steps. The input can be
     passed piece by piece to the encode() method. The IncrementalEncoder remembers
     the state of the Encoding process between calls to encode().
     """
     def __init__(self, errors='strict'):
         """
-        Creates a IncrementalEncoder instance.
+        Creates an IncrementalEncoder instance.
 
         The IncrementalEncoder may use different error handling schemes by
         providing the errors keyword argument. See the module docstring