harvest是一个下载html网页得机器人

												        Document Type Definition for the HyperText Markup Language					with Level 1 Extensions	(HTML Level 1 DTD).									$Id: html-1.dtd,v 1.2 1995/03/29 18:53:10 connolly Exp $									Author: Daniel W. Connolly 					See Also: http://info.cern.ch/hypertext/WWW/MarkUp/MarkUp.html				-->													"-//IETF//DTD HTML 2.0 Level 1//EN"								        -- Typical usage:								            						"-//IETF//DTD HTML Level 1//EN">					    					    ...					    					--					>																								%html;