This page of ReSharper options lists available namespaces with code annotation attributes and allows you to copy the default implementation of ReSharper Code Annotations into your solution, as well as to choose a default code annotation namespace.
|Namespaces with code annotation attributes||Contains the list of namespaces in the solution and referenced assemblies where ReSharper discovered valid annotation attributes types.|
|Copy default implementation to clipboard||Copies the whole implementation of the JetBrains.Annotations namespace to clipboard so that you can insert it in your solution. See Code Annotations for details.|
|Default annotation namespace||Allows you to choose a default code annotation namespace. This option may be helpful to define the default annotation types if you have the same annotation types in several namespaces. See Code Annotations for details.|
ReSharper's settings are saved in settings layers that enable you to have different settings for different solutions as well as to share your settings with your team. To learn more, study the Managing and Sharing Options section.