[Solr Wiki] Update of "UpdateXmlMessages" by HossMan

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    <doc>
      <field name="employeeId">05991</field>
      <field name="office">Bridgewater</field>
+     <field name="skills">Perl</field>
+     <field name="skills">Java</field>
    </doc>
  </add>
  }}}
+ 
+ Subversion contains many 
[https://svn.apache.org/repos/asf/incubator/solr/trunk/example/exampledocs/ 
complex examples of <add> document messages].
  
  ==== Optional attributes for "add" ====
     * `allowDups = "true" | "false"` &#8212; default is "false"