PDF is:
Portable Document Format (PDF) is the de facto standard for the secure and reliable distribution and exchange of electronic documents and forms around the world, with a ten-year track record. PDF is a universal file format that preserves the fonts, images, graphics, and layout of any source document, regardless of the application and platform used to create it. Adobe® PDF files are compact and complete, and can be shared, viewed, and printed by anyone with free Adobe Reader® software. To date, more than 500 million copies of the software have been distributed. You can convert any document to Adobe PDF using Adobe Acrobat® software products, enabling business, engineering, and creative professionals to create, distribute, and exchange secure and reliable Adobe PDF documents.--from the Abode site
A PDF standard icon looks like this:
But on this site, it's a smaller icon that looks like this: 
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When you see this little icon, click on it. If you have the latest Acrobat Reader installed, the file will automatically download. You can downloaded to your computer for future reference or print it if you like. If it doesn't come up, you will have to download the software. Most academic computer rooms (such as libraries, colleges, high schools) have Acrobat Reader already installed. If you are on your personal computer and don't have Acrobat Reader, you can download it for free. Click on the button below for downloading information.
Last Modified: Tuesday, 10/14/08
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