Doc update

Author: kmoco2am

src/site/xdoc/sqlmap-xml.xml

@@ -485,8 +485,8 @@ ps.setInt(1,id);]]></source>
       <subsection name="sql">
         <p>
           This element can be used to define a reusable fragment of SQL code that can be
-          included in other statements. It can be statically (during load phase) parametrized and also included many time
-          with different property values. For example:
+          included in other statements. It can be statically (during load phase) parametrized. Different property values can
+          vary in include instances. For example:
         </p>
 
         <source><![CDATA[<sql id="userColumns"> ${alias}.id,${alias}.username,${alias}.password </sql>]]></source>
@@ -496,13 +496,15 @@ ps.setInt(1,id);]]></source>
         </p>
 
         <source><![CDATA[<select id="selectUsers" resultType="map">
-  select <include refid="userColumns"><property name="alias" value="t"/></include>
-  from some_table t
-  where id = #{id}
+  select
+    <include refid="userColumns"><property name="alias" value="t1"/></include>,
+    <include refid="userColumns"><property name="alias" value="t2"/></include>
+  from some_table t1
+    cross join some_table t2
 </select>]]></source>
 
         <p>
-          Property value can be also used in include attributes (e.g. refid), for example:
+          Property value can be also used in include refid attribute or property values inside include clause, for example:
         </p>
 
         <source><![CDATA[<sql id="sometable">