Hi, I'm completely new to the windows store, and to all of the apps therein. I've been told by multiple people that it's possible to edit PDFs and PPs in applications on the surface, such as the standard PDF reader, Onenote, something called "PDF annotator" etc. I can't seem to find a single program that will allow me to open a PDF or powerpoint and allow me to use my finger, or a capacitive stylus to edit these. I'm a pharmacy student, and in medicinal chemistry we were closely with tons of biochemical structures, it's necessary for me to be able to ink these digitally. I've been able to do this best with the iPad that I currently have and have been wanting to get rid of because I love the integration I'm getting from windows with this new surface, along with the amazing keyboard cover - but if I can't ink these PDFs/PPs then I am FORCED to take it back. Can someone give me the low-down on what I'm doing wrong or if this just isn't possible as of now with the RT version? Thanks.