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Introducing PAS for OpenEdge
Apache Tomcat and the Progress Application Server for OpenEdge : Web applications

Web applications

The Web applications deployed to a Progress Application Server (PAS) instance are generated as Web application archive (WAR) files. When deployed, Web application WAR files are expanded in the server's Java Servlet container (usually the server's /webapps directory.)
In PAS for OpenEdge, the /webapps folder typically includes:
*A PAS for OpenEdge ROOT application that replaces the default Tomcat ROOT application. Note that the server must have an application named ROOT installed.
*Optional administrative applications.
*The ABL Web applications that the application server runs in response to a client request.
A deployed Web application is represented by a Context container in the /conf/server.xml file.