PageScribble lets you draw on any webpage in Safari. Review a design, teach a concept, highlight research, or sort out your thoughts, right on the page. DRAW AND MARK UP Pen, marker, eraser, text, lines, arrows, rectangles, ellipses, triangles, and stars. Set the stroke width, pick any color, or sample one from the page with the eyedropper. PRESENT AND TEACH Point with a laser that leaves a fading trail, spotlight one area while the rest of the page dims, write in ink that fades on its own…