The markup tool in Safari lets you highlight text, add notes, insert your signature, and more. To access it on Mac, take a screenshot of the webpage or convert it into a PDF and use the Markup tool ...

Apple's Pages has a handy feature called "Smart Annotation," which lets you switch between a tightly-formatted document and easy annotation. All you need is an iPad and, ideally, an Apple Pencil. Here ...

I have a wacom tablet, and I need to review a bunch of PDF manuscripts for colleagues abroad. <BR><BR>Seems the smart thing to do would be to superimpose hand-written notes and sketches on the PDFs ...