When you download a PDF version of your interactive pattern you should be prompted with a window. You can then either save as a PDF or print.
I hope this is helpful
You may be talking about a program that opens pdf files? You can download a a free PDF reader from Acrobat. You can download it from their website. Since it’s free you can only open the files to read and can not write or make changes. They also offer the full program at a price.