title: From an included file, how do I tell which file included it?
body: <p>I've got a file called header.asp that is included in almost all the pages of my site using a SSI:</p>
  
  <p><code>&lt;!-- #include file="header.asp" --&gt;</code></p>
  
  <p>In header.asp I want to output some html depending on which file included it. Assume that the file being request is the file that includes header.asp.   In PHP, I can check the <code>$_SERVER['REQUEST_URI']</code> to get the file that was requested.  How can I get this information in ASP?</p>