Once a Web document is fetched, Vortex automatically processes it for additional information. Several calls exist to provide this information about the most recently fetched document:

• <urllinks>
  We can obtain the URL links from the page with <urllinks> . These are returned fully-qualified, ie. relative links have the host name prepended, so they can be passed directly to <fetch> .

• <urltext>
  Often we want the plain, formatted text that the user sees, without any HTML tags. This is useful for text indexing, and it is returned by the <urltext> function.

• <urlinfo nbsp;title>
  This returns the title of the document, if any.

• <urlinfo nbsp;contenttype>
  This returns the MIME Content-Type of the document. For example, if we really fetched a GIF, it would be "image/gif ".

• <urlinfo nbsp;metaname nbsp;Description>
  This shows the value of the <META nbsp;NAME=Description> tag in the document, if any. Useful for adding to a search database.

• <urlinfo nbsp;errmsg>
  This gives us the error message from the last fetch. For example, Document not found if the Web server couldn't find the page.

There are more options available; see the Vortex manual on <urlinfo> .