For my first post on here, I thought I'd ask a question I've had for a long time with PDFs: Is there a way to highlight text in a PDF and save the highlight? (I don't mean selecting text in order to copy it to another application). Or, is there a way to make notes in the margins or post "stickies" on the pages?
I ask because I download a lot of scientific articles in PDF format, and I'd love to have a way to make notes right on the PDF, rather than have to print it out. No one I've asked seems to know how to accomplish this. Any suggestions?