I was searching for the answer to this question recently and found this information in the list archives:<div><br></div><div>https://webmail.iro.umontreal.ca/pipermail/gambit-list/attachments/20090226/af2ee44c/attachment-0001.txt</div><div><br></div><div>- Jamie<br><br>----- Original Message -----<br>From: lowly coder &lt;lowlycoder@huoyanjinjing.com><br>Date: Tuesday, May 26, 2009 4:19 pm<br>Subject: [gambit-list] define-type<br>To: Gambit List &lt;gambit-list@iro.umontreal.ca><br><br>> Hey,<br>>   Where is define-type documented? I can't find it in r5rs <br>> or in the gambit<br>> documentation (though it is briefly mentioned in a tour of <br>> scheme through<br>> gambit). define-type is really cool and I'm starting to run <br>> against my<br>> limited knowledge of it.<br>> <br>> Thanks!<br>> </div>