Integrated IRM (Information Rights Management) - IRM management in PowerPoint allows you to create permissions for various levels of file access to any PowerPoint presentation you create, open or edit in PowerPoint 2003 - such files can be only opened in PowerPoint 2003 even though the file format is the same as earlier versions of PowerPoint since only PowerPoint 2003 is IRM aware. To use IRM and set permissions, you might be prompted to download Microsoft's IRM client the first time you use this feature through the File | Permissions option. Apart from setting permissions, PowerPoint also allows a file to expire using IRM technology.