Where are webapps in tomcat6?

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http://askubuntu.com – I have installed tomcat6. I have also installed manager and host-manager webapps. I created user and I am able to run both from browser on remote machine. However I don't know where these apps are deployed? When I go to /var/lib/tomcat6/webapps/ I see only ROOT dir. My /etc/default/tomcat6 doesn't tell me where my CATALINA_HOME or CATALINA_BASE are? (HowTos)