The majority of documents available from I.R.O.'s web pages are in PDF format.

The Portable Document Format (PDF) provides a mean for distributing documents electronically in publish-ready form. A PDF viewer is necessary to view and print PDF files.

Adobe Systems Incorporated provides a free PDF viewer called Acrobat Reader. The current version of Acrobat Reader is available at:

http://www.adobe.com/prodindex/acrobat/readstep.html