<para>Availability: 1.5.0 geography support was introduced.</para>
<para>Enhanced: 2.0.0 prefix support was introduced. Option 4 for GML3 was introduced to allow using LineString instead of Curve tag for lines. GML3 Support for Polyhedral surfaces and TINS was introduced. Option 32 was introduced to output the box.</para>
<para>Changed: 2.0.0 use default named args</para>
- <para>Availability: 2.1.0 id support was introduced, for GML 3.</para>
+ <para>Enhanced: 2.1.0 id support was introduced, for GML 3.</para>
<note><para>Only version 3+ of ST_AsGML supports Polyhedral Surfaces and TINS.</para></note>
<para>&Z_support;</para>
<para>
Band numbers start at 1 and <varname>bandnum</varname> is assumed to be 1 if not specified. If <varname>exclude_nodata_value</varname> is set to false, then all pixels include <varname>nodata</varname> pixels are considered to intersect and return value. If <varname>exclude_nodata_value</varname> is not passed in then reads it from metadata of raster.
</para>
+ <para>Availability: 2.1.0</para>
<note>
<para>
ST_NearestValue is a drop-in replacement for ST_Value.
</xsl:for-each>
</itemizedlist>
+ <para>The functions given below are PostGIS functions that are enhanced in PostGIS 2.1.</para>
+ <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(.,'Enhanced: 2.1')">
+ <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>