Apple’s OS X 10.10 Yosemite software introduced so many new features that users will still be trying to learn them several months after installing the update. But OS X also has some old features that you might not know about. In fact, there’s a hidden paint program on your Mac computer that has been sitting right under your nose this whole time, and a recent pose will show you how easy it is to find.

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As Dave Winer recently pointed out on Scripting News (via The Loop), Apple’s Preview app has somewhat hidden paint function that most users have no idea is there.

Winer’s instructions for accessing the paint functions in Apple’s Preview app include a few extra steps, wo we’ll amend them here.

All you have to do is open any image file on your computer in Preview (if Preview isn’t your default app for image files, simply right-click on a file, hover over “Open With,” and then select “Preview.app”).

Then in the top menu in Preview, you’ll see a toolbox icon. Just click it and you’re ready to go.

The paint functions in Preview aren’t exactly on par with something like Photoshop, but there are plenty of simple tools for quick edits and markups. There is even a nifty signature function that lets you digitally sign documents using your laptop’s trackpad or a Magic Trackpad.

Zach Epstein has worked in and around ICT for more than a decade, first in marketing and business development with two private telcos, then as a writer and editor covering business news, consumer electronics and telecommunications. Zach’s work has been quoted by countless top news publications. He was also recently named one of the world's top-10 “power mobile influencers” by Forbes, as well as one of Inc. Magazine's top-30 Internet of Things experts.