The documents are kept on computers called servers, which can send the documents to your computer. The World Wide Web has been compared to a library with all of the books in random piles on the floor. Search engines and directories are tools that provide access to the Web's unorganized information. Searching for Information Search Engines are computer programs which index Web sites based on specific criteria. They compile information by scanning contents of servers on the World Wide Web use keywords provide many hits Some search engines allow Boolean searching .
Directories are lists of resources compiled by people.
Humans, not computers, decide which Web sites to add to a directory. If you get confused, use the HELP menu that is with each one.