Hey thatdude,
Great to hear you like the set!
If you mean the tiles that visualize the graphics used in the asset-preview: you are right. They are in there as reference on how to use the tiles. Usually I do not put examples into the stylesheets but a few people didn't know how to work with 1x1 and 2x2 times tiles. so I put those graphics inside as references. Also later I added the whole tilemap that shows how to use the pack.
Hope that helps,
regards,
- Sam