Why McDonald’s Cup Lids Have Rectangular Buttons Each round button on a McDonald’s cup lid is labeled with an abbreviation so workers and customers know which drink is which.

While many McDonald’s diners already knew what the circular nubs are for, many were shocked to learn the purpose of the rectangular ones.

But the function of the smaller rectangle buttons next to the circular ones wasn’t as obvious: The ridges are used to correct a mistake if a server presses down the wrong circular button.

News US News Cars People only just realising what the round button on seatbelt is actually for A TikTok user has shared a range of fun facts, interesting insights, and hacks, and his videos have ...

What, exactly, are those tiny buttons on top of soda and coffee lids for anyway? We're here to answer this pressing question.

A mockup shared by a leaker with a poor track record allegedly depicts iMessage in iOS 19 with a redesigned keyboard and circular buttons, but not much else.

Apple gave the AirPods 4's charging case several neat features, including a discreet status light and a new hidden button for pairing.

Next time you're at the lights, stop to appreciate the humble pedestrian button. The design is so beautiful that even Oscar Wilde would approve, says Dr Karl.

The 'A' engine button is a feature found in most modern cars, but many motorists are still unaware of its capabilities. Experts are now urging drivers to be aware of the button ...

First, disconnect it from your Switch by holding the small circular button on the top of the controller to the left of the USB-C port.

Now that your Meta Quest 3 or Quest 3S is charged and you’re ready with the app, it’s time to remove the protective films, and locate the power button – it’s a circular button on the front ...