Information you need to manage are self-generated, but you can also receive information that is in larger chunks and come from other sources. You may need to organize large chunks of text or files such as memos, reports, messages, news stories, images, the web, or files. It is useful to add some descriptive text to a file that you down loaded. To cope with the task of organizing files and notes, you group them, and save into nodes in a tree view.