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We periodically field questions about password-protecting a PDF to prevent the wrong people from reading it. Lawyers want to ensure that drafts of legal documents don’t fall into the wrong hands, financial advisers want to keep confidential financial information private, and authors want to prevent their writing from being shared broadly on the Internet. Others don’t worry so much about a document being read but want to ensure that it can’t be changed or printed.

September is here, and with it, Apple’s latest iPhones and Apple Watches. At its Wonderlust event on September 12, Apple threw back the curtains on the new iPhone 15 lineup, Apple Watch Series 9, and Apple Watch Ultra 2. These devices all provide incremental improvements that make them attractive to people planning to purchase a new iPhone or Apple Watch, though they may not be irresistible upgrades for those still happy with older models. You can pre-order any of them starting September 15, with delivery and in-store availability on September 22.

Apple’s Preview is a surprisingly capable graphics editor for making quick changes to screenshots and other illustrations, but it lacks a built-in way to delete content while leaving the background. Here’s the workaround—select a rectangle of the background color, copy it, paste it, and then move it over the undesirable content—as shown in the After screenshot below, where blue selection dots denote the pasted box. As you resize the box, press Shift to prevent it from resizing proportionally, which helps you make it the shape you want.