I'm not proficiient in it, but I've got the software and have tinkered with it a bit.
You can design your own quilt's on the computer and put in your fabric colors and make different block designs, and rotate your blocks to see the differences the placing and colors make.
I'm sure there are more experienced users of it that could chime in and explain it better....but that's what I like about it when I did play around with it....it was amazing to see how different the quilt would look by changing one color or rortating a block or adding sashing.
Hope I made sense..lol.