Use this page to view, create, or modify managed properties and map crawled properties to managed properties. Crawled properties ...

Use this page to view, create, or modify managed properties and map crawled properties to managed properties. Crawled properties are automatically extracted from crawled content.  You can use managed properties to restrict search results, and present the content of the properties in search results. Changes to properties will take effect after the next full crawl. Note that the settings that you can adjust depend on your current authorization level.