What is provided by the elements that don’t recognize the namespace URI? - XSLT

What is provided by the elements that don’t recognize the namespace URI?

- The elements that doesn’t recognize the namespace URI provides features like:

- The information, which is used by the extension, element or function and implemented it in an application.

- The information is provided regarding the work that needs to be done on the source tree.

- The information is being provided regarding the output that needs to generate using the result tree.

- The metadata that needs to be gathered using the stylesheet with proper keywords and other search results.

- The documents need to be clear and structured for the stylesheets and for its use.