We use Adobe's Acrobat text reader on this site as it provides a commonly used format across the web in which to store all kinds of documents and presentations. Many people will undoubtedly have this software installed on their computer work-station and will be familiar with using it. If you haven't used it before, we recommend that you go to the Adobe site (using the link below) and get the Reader. The software is free and will happily install on most operating systems without any hassle.