Webchecker---------- This is a simple web tree checker, useful to find bad links in a webtree.  It currently checks links pointing within the same subweb forvalidity.  The main program is "webchecker.py".  See its doc string(or invoke it with the option "-?") for more defails. History: - Jan 1997.  First release.  The module robotparser.py was written bySkip Montanaro; the rest is original work by Guido van Rossum. - May 1999.  Sam Bayer contributed a new version, wcnew.py, whichsupports checking internal links (#spam fragments in URLs) and someother options. - Nov 1999.  Sam Bayer contributed patches to reintegrate wcnew.pyinto webchecker.py, and corresponding mods to wcgui.py andwebsucker.py. - Mar 2004.  Chris Herborth contributed a patch to let webchecker.pyhandle XHTML's 'id' attribute.