No Follow Meta Tag, Robots No Index, No Follow

The tag provides metadata (data about data) about the HTML document. Metadata will not be displayed on the page, but search engine robots can read it.
The noindex HTML meta tag advises spiders / search engine robots to avoid indexing a Web page.
NoIndex NoFollow means that search engine robots will not index (NOINDEX) or follow (NOFOLLOW) the links on that page.
Many seo specialist use this for their enternal page not to to indexed by the search engines.
Example of a NoFollow Tag