Is a document which may contain images and video which File Jucier can extract. It has been created by Pages a part of Apple's iWork office suite.
Text In Pages Files
Pages is mostly for text, however to allow to all the layout features of Pages, the file format is mostly about layout
The text is mixed in with the layout information in the gz file extracted by File Juicer
Doubleclick the gz file to get the xml file inside.