The Contents page defines the content of the product.
If the product is plugin-based, the Contents page shows a Plug-ins and Fragments section where you list all the plug-ins that will make up the product. This section also provides New Plugin... and New Fragment... buttons to enable you to create new plug-ins and fragments on the fly.
If the product is feature-based, the Contents page shows a Features section where you list all the features that will make up the product. This section also provides a New Feature... button to enable you to create new features on the fly.
