diff --git a/doc/reference_editor.xml b/doc/reference_editor.xml
index 87a179de8..7c7be2882 100644
--- a/doc/reference_editor.xml
+++ b/doc/reference_editor.xml
@@ -1246,6 +1246,8 @@ SELECT ST_AsEWKT(ST_Scale(ST_GeomFromEWKT('LINESTRING(1 2 3, 1 1 1)'), 0.5, 0.75
 			only. For geometry, length units are in units of spatial reference.  For geography, units are in meters.</para>
 			<para>Availability: 1.2.2</para>
 			<para>Enhanced: 2.1.0 support for geography was introduced.</para>
+			<para>Changed: 2.1.0 As a result of the introduction of geography support: The construct <code>SELECT ST_Segmentize('LINESTRING(1 2, 3 4)',0.5);</code> will result in ambiguous function error.  You need to have properly typed object e.g. a geometry/geography column, use ST_GeomFromText, ST_GeogFromText or
+				<code>SELECT ST_Segmentize('LINESTRING(1 2, 3 4)'::geometry,0.5);</code></para>
 			<note><para>This will only increase segments.  It will not lengthen segments shorter than
 			max length</para></note>
 		</refsection>
diff --git a/doc/xsl/postgis_aggs_mm.xml.xsl b/doc/xsl/postgis_aggs_mm.xml.xsl
index 5cc123653..bceccea95 100644
--- a/doc/xsl/postgis_aggs_mm.xml.xsl
+++ b/doc/xsl/postgis_aggs_mm.xml.xsl
@@ -504,6 +504,38 @@
 				
 			
 			</sect2>
+			
+			<sect2 id="NewFunctions_2_1_Changed">
+			       <title>PostGIS Functions changed behavior in 2.1</title>
+			       <para>The functions given below are PostGIS functions that have changed behavior in PostGIS 2.1 and may require application changes.</para>
+                    <note><para>If you are using a function that you don't see documented,
+                        it's probably deprecated, about to be deprecated, or internal and should be avoided.  If you have applications or tools
+                        that rely on deprecated functions, please refer to <link linkend="legacy_faq" /> for more details.</para></note>
+
+                    <itemizedlist>
+                    <!-- Pull out the purpose section for each ref entry   -->
+                        <xsl:for-each select='//refentry'>
+                            <xsl:sort select="@id"/>
+                            <xsl:variable name="refid">
+                                <xsl:value-of select="@id" />
+                            </xsl:variable>
+                            
+                            <xsl:variable name="refname">
+                                <xsl:value-of select="refnamediv/refname" />
+                            </xsl:variable>
+                    <!-- For each section if there is note about enhanced in this version -->
+                                <xsl:for-each select="refsection">
+                                    <xsl:for-each select="para | */para">
+                                        <xsl:choose>
+                                            <xsl:when test="contains(.,'Changed: 2.0')">
+                                                <listitem><simpara><link linkend="{$refid}"><xsl:value-of select="$refname" /></link> - <xsl:value-of select="." /></simpara></listitem>
+                                            </xsl:when>
+                                        </xsl:choose>
+                                    </xsl:for-each>
+                                </xsl:for-each>
+                        </xsl:for-each>
+                    </itemizedlist>
+             </sect2>
 		
 			<sect2 id="NewFunctions_2_0">
 				<title>PostGIS Functions new, behavior changed, or enhanced in 2.0</title>