What is PDF?
Portable Document Format

You can skip this boring explanation:
Invented by Adobe, Portable Document Format (PDF) is the published specification used by standards bodies around the world for more secure, reliable electronic document distribution and exchange. PDF has been adopted by enterprises, educators, and governments around the world to streamline document exchange, increase productivity, and reduce reliance on paper. It is the standard format for the electronic submission of drug approvals to the U.S. Food and Drug Administration (FDA) and for electronic case filings in U.S. federal courts. PDF files look exactly like original documents and preserve the fonts, images, graphics, and layout of any source file -- regardless of the application and platform used to create it.

But most important of all:
It's perfect for printing a printer friendly version of an article.

Important: You will need the free Adobe Reader software  installed in your system in order to read and print PDF files. Most computers come with the software already installed. What about my computer?

Click here to test

If the test PDF file opens, then you're all set.

If it does not open, or if your computer asks you where to save the file, this is a sign that the software is not installed.

Simple, just click here to download (FREE)
the latest version of the Adobe PDF Reader