I even found something I hadn't expected. One of the women at my table, Dawn, was using her iPad to view her chart....she could make it large or small....she told me that she uses Dropbox.com and moves the PDF files into there and then can have them available on her iPad, iTouch or iPhone....as well as her computer. I don't have an iPad, but I do have a Kindle Fire. Dropbox does not seem to be compatible with the Kindle Fire, but Amazon has a program called "send to kindle" which does the same thing. I can move my files to the Kindle Fire and then can make them as large as I need. It also works well for crocheting and knitting directions. How nice to not have to have a paper pattern....the Kindle stands up just like the iPad does, so it's much easier to see them than if they are laying flat or propped up.
Here's a picture of Cirque de Triangles which has since been completed. I stitched it on 28 ct Opalescent that I received from my FOTM club with Silkweavers.