5. The method of claim 1 , wherein extracting a list of snippets in the selected document comprises extracting a list of all the snippets in the selected document.
5. The method of claim 1 , wherein extracting a list of snippets in the selected document comprises extracting a list of all the snippets in the selected document. 7. The method of claim 5 , wherein: at least one snippet comprises a sentence; and N is a pre-specified threshold.