Write all ASP page variables (See related posts)

<%
  Response.Write "Server Variables" & "<br><br>"
For Each strName in Request.ServerVariables
  Response.Write strName & " - " & Request.ServerVariables(strName) & "<BR>"
Next

  Response.Write "Session Variables" & "<br><br>"
For Each strName in Session.Contents
  Response.Write strName & " - " & Session.Contents(strName) & "<BR>"
Next

  Response.Write "Form Variables" & "<br><br>"
For Each strName in request.form
  Response.Write strName & " - " & request.form(strName) & "<BR>"
Next

  Response.Write "String Variables" & "<br><br>"
For Each strName in request.querystring
  Response.Write strName & " - " & request.querystring(strName) & "<BR>"
Next
%>