The Page Tree Node(s) defines the page structure of the document.
| Key | Type | Required? | Description |
| Type | Name | Required | The type of PDF object this is: Pages |
| Parent | Dictionary | Required | an indirect reference to the parent node |
| Prohibited | not present in the root node |
| Kids | Array | Required | an array of indirect references to the immediate children of this node.
The children must be page tree nodes or page objects |
| Count | integer | Required | the number of leaf nodes (page objects) that are descendants of this node within the page tree. |
A
Page tree node can only have at most 8191 kids.