Mariella Moon writes: “Google has introduced a new tool for Slides that can help you make your presentations more interactive and keep your audience’s attention. The new feature, a pen tool, lets you write on a slide in real time, so you can encircle key figures, draw arrows, underline important information, and just generally scribble anything you want on the presentation while in the middle of a meeting or a report. Slides’ new pen tool is built into the program, and there’s no need to download anything extra.”