Keynote Files
Is a document which may contain images and video which File Jucier can extract. It has been created by Keynote a part of Apple's iWork office suite.
Inside Keynote files is a zip file which contains a apxl file. The APXL file is an XML file which can be read with a text editor like TextMate. TextMate also has a function to strip off XML markup and leave only the regular text.
