I believe it is from AutoCAD. I remember seeing it there a few years ago when I was beta testing AutoCAD for Mac 2013. That cube is nice and you can actually get Fusion360 for free.
There are some neat things about Fusion. You can set parameters and then use that in equations. Say you draw a circle at 2 inches. You set that to a term like Circle2. than you can enter an amount for another circle like circle2+1 inch to get a 3" circle.