How to Use (or Disable) iCloud Optimized Storage on Mac

iCloud Optimized Storage is the newest addition to the iCloud lineup, saving space on your Mac’s hard drive by storing documents you don’t use too often in iCloud. If you’ve already got an iCloud plan for your iPhone, and are running out of storage on your Mac, you can use it to get rid of those “Disk Space Full” notifications.
by Anthony Heddings via How-To Geek