Block and Content (Layer 6)
Blocks should be thought of as any design pattern or component that is responsible for the display of readable content.
Examples of what would be considered "Block" content in CDS can be found in the Components section of the documentation.
Code
Not appplicable. The code here is defined by the component or design pattern code.
Developer Notes
Whenever you implement any component or design pattern, do not utilize any of the classes that define one of the structure elements. (band, region, layout, container, or section)