An Applicazione Arbortext PE is a program written in Arbortext Command Language (ACL), Java, JavaScript, or VBScript that runs in an Sottoprocesso Arbortext PE. The Arbortext PE Request Manager invokes an Sottoprocesso Arbortext PE to run an Applicazione Arbortext PE when it receives a request with HTTP query parameters specifying the application language and a function or class name. The Arbortext PE Request Manager passes the entire HTTP request to the Applicazione Arbortext PE. The application is responsible for constructing a complete HTTP response and returning the response to the Arbortext PE Request Manager which returns it to the HTTP client.