i'm making some custom error pages. The google help for webmasters page instructs like this:
No matter how beautiful and useful your custom 404 page, you probably don't want it to appear in Google search results. In order to prevent 404 pages from being indexed by Google and other search engines, make sure that your webserver returns an actual 404 HTTP status code when a missing page is requested.
return an actual 404 HTTP status code?
does that mean simply to put
<!--#echo var="REDIRECT_STATUS" -->
in the head of the document?