A page (org.zkoss.zk.ui.Page) is a collection of components. A page confines components belonging to it, such that they will be displayed in a certain portion of the browser. A page is automatically created when ZK loader interprets a ZUML page.
Page Title
Each page could have a title that will be displayed as part of the browser's window caption. Refer to the Processing Instructions section in the ZK User Interface Markup Language chapter for details.