When a form is submitted in addition to the file(s) payload it may contain additional post variable in the form of <input type="text" name="xyz" value="123"/> elements. What happens to these additional pieces of information? Are they accessible in the usual way via, say, the Params collection? Or is there a different mechanism to use? Such fields might be included to provide information about the author of the file being uploaded, confirmation that no copyright is being violated, etc.