Bloks are nestable components and can be used only inside of another component (Content Type or Blok). They can not be used to create a Story. Thanks to this setup you can create a nested structure of components that are like the parts of a tree. With Content Types as the roots, Bloks as the branches and subbranches and Field Types as the leaves. Some examples of Bloks are “Hero area”, “Contact Section”, “Newsletter Section”, “Featured Articles Section”, “Article Teaser”, “Product Teaser” and “Call to action”.