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> ## Identifying the JSP Document to the Container

> A JSP document must be identified as such to the web container so that the container interprets it as an XML document. There are three ways to do this:

> - In your application's `web.xml` file, set the `is-xml` element of the `jsp-property-group` element to true.
> - Use a Java Servlet Specification version 2.4 `web.xml` file and give your JSP document the `.jspx` extension.
> - Include a `jsp:root` element in your JSP document. This method is backward-compatible with JSP 1.2.