This page exists within the Old ArtZone Wiki section of this site. Read the information presented on the linked page to better understand the significance of this fact.
The Brickyard is where all the shader Bricks are located along with a preview window and a Properties tab. The Properties tab is the same as the Surfaces tab and shows what the user will see when the shader is applied. You can also make modifications to the parameters on the Properties tab that affect the shader you are working on.