Consider the following statements about portlets:
I. Portlets can't contain anything from static HTML content to Java controls to complex web services and process-heavy
II. Portlets are modular panes within a web browser that surface applications, information, and business processes.
III. Portlets can communicate with each other and take part in Java page flows that use events to determine a user’s path
through an application.
IV. A single portlet can't have multiple instances − in other words, it can't appear on a variety of different pages within a single portal.
The correct statements are only