Information you need to manage are self-generated, but you can also receive information that is in larger chunks and come from other sources. An user may need to index or organize larger chunks of text or files such as memos, reports, messages, news stories, images, the web (very large source), or files (documents and programs). 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. You may be unaware of the volume of information you manage on a regular basis. You may be using a variety of mechanisms to store collected information which include aids as note cards, yellow sticky notes, piece of paper store in your pocket or hand bag, and lists on paper that are re copied on a regular basis. In general, personal information is too ad hoc and poorly structured to warrant putting it into a record-oriented on-line database. Why delete files, or storing them on...