<span>Registration: A method of correlating color separation so that the colors line up correctly. Press: A device used to transfer an image. Keyblock: A printing block that is used to create a black outline before the color is added, and usually has the most detail.</span>
The most important limitation of stone is the lack of tensile strength, the capacity of a material to withstand binding.
Stone is durable and impressive stuff, but it's also challenging to quarry, and heavy to move, and it has tension and stress limitations. Where there are resources available to excavate and cut it precisely, stone can be an extremely strong and useful natural material. Unlike brick, it can be stacked without mortar and support heavy vertical loads. Stone resists deforming, weathers the elements well, withstands fire and helps maintain stable interior environments.