Is there attribute named "defaultSessionTimeOut" in tomcat server.xml?
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when I want to set the "timeout" for my tomcat server,some one tell me do like that:

    <Context path="/test" docBase="/test"     
    　　defaultSessionTimeOut="3600" isWARExpanded="true"     
    　　isWARValidated="false" isInvokerEnabled="true"     
    　　isWorkDirPersistent="false"/>

but i can't find the "defaultSessionTimeOut" attribute in the official docs :http://tomcat.apache.org/tomcat-6.0-doc/config/context.html . is the offical docs not complete ?