This can contain the following tags:

• <TITLE> title </TITLE>
  This can be used to record the documents URL

• <BASE HREF="any URL">
  This can be used to record the documents URL

• <ISINDEX>
  Indicates to the browser that the whole document is an index document

• <LINK HREF="url" REL="next url" REV="previous url">
  

     or NAME=""
     or TITLE=""
     or URN=""
     or METHODS=""
  

  Indicates a relationship between the document and some other object

• <NEXTID N="a12">
  Used to generate a unique identifier

• <META NAME=" " CONTENT=" ">
  You can specify the NAME attribute and most servers will attempt to determine the equiv from the type of content (not always successfully).

  typical names are 'DESCRIPTION' and 'keywords'.

• <META HTTP-EQUIV=" " CONTENT=" ">
  gives information that appears in the HTTP headers (such as the expiry date)

  typical HTTP-EQUIVs are 'Expires', 'Keywords', 'Reply-To'. You should be careful not to use information that will be provided by the server (date, server name, last modified date, etc.).

  If the document should be refreshed every so often

    <meta http-equiv="Refresh" content="time in seconds">
  

  If the document should be replaced in the browser by a new document:

    <meta HTTP-EQUIV=REFRESH content="time;URL=url">