The ability to save any of your selections and then use them at any given time is another useful Adobe Photoshop option. Let me show you how to use it.
If you don't want others to use your photos and images without your permission, you can create a so called custom watermark with your name or any other text you want.
Pretty useful trick in Adobe Photoshop, where we will change the setting for showing dimensions in pixels instead of centimetres while making selections.
Remember the legendary Predator movie with Arnold Schwarzenegger? Those Predator aliens had this thermal view feature so they could their prey even in complete darkness, let's Photoshop it.