You might be thinking, “Why would anyone flip their screen sideways?” There are actually several great use cases:
If you are on a Windows PC (laptop or desktop), there is a very high chance you can rotate your screen instantly using your keyboard. change screen orientation shortcut
Apple users have a slightly different experience. macOS does not enable a global "rotate screen" keyboard shortcut by default to prevent accidental inputs (a common issue with Windows laptops in schools!). However, you can still change orientation easily. You might be thinking, “Why would anyone flip