Search and Refactor Operations Scope
The scope is a collection of documents that define the context
      of a search and refactor operation. To control it you can use the  Change scope operation, available
      in the Quick Fix action
      set or on the Referenced/Dependent Resources view's toolbar. You can
      restrict the scope to the current project or to one or multiple working sets. The Use
          only Main Files, if enabled checkbox allows you to restrict the scope of the
        search and refactor operations to the resources from the Main Files
          directory. Click
            read more for details about the Main Files
            support.
Change scope operation, available
      in the Quick Fix action
      set or on the Referenced/Dependent Resources view's toolbar. You can
      restrict the scope to the current project or to one or multiple working sets. The Use
          only Main Files, if enabled checkbox allows you to restrict the scope of the
        search and refactor operations to the resources from the Main Files
          directory. Click
            read more for details about the Main Files
            support.
 
      The scope you define is applied to all future search and refactor operations until you modify it. Contextual menu actions allow you to add or delete files, folders, and other resources to the working set structure.
