
Information Rights Management
IRM stands for Intellectual Rights Management, and Microsoft Office
2007 (including PowerPoint 2007) supports this level of document
protection.
This page on Microsoft's site has more information: Information
Rights Management

Some URLs at the Microsoft site might change - and I'll make sure
that the links on these pages change accordingly - however, it
is possible that the link might have changed and I'm not still
aware about it - if that's the case, can I request you to let me
know about this through the feedback
form... Thank you!

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