Just above the Brickyard and Properties (WIP) pages is an area for displaying a preview of the shader that has been built in the Shader Workspace (WIP). The text “Click for Preview” will be displayed in this area until/unless it is clicked. The Shader Preview is unique in that it takes the entire shader_network into account, that is all Roots in the shader and all Functions connected to them, unlike the individual brick previews that only consider the connected bricks upstream from itself.