Pages contain the data objects that comprise a presentation document. Each page has a set of data objects associated with it. Each page within a document is independent from any other page, and each must establish its own environment parameters.
The page is the level in the document component hierarchy that is used for printing or displaying a document's content. The data objects contained in the page envelope in the data stream are presented when the page is presented. Each data object has layout information associated with it that directs the placement and orientation of the data on the page. In addition, each page contains layout information that specifies the measurement units, page width, and page depth.
A page is initiated by a begin page structured field and terminated by an end page structured field. Structured fields that define objects and active environment groups or that specify attributes of the page may be encountered in page state.