Thanks a lot!! <div class="gmail_quote">2011/8/4 Danny Yoo <<a href="mailto:dyoo@cs.wpi.edu">dyoo@cs.wpi.edu</a>> <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;"> <div class="im">> Can someone please point me to documentation on how to create a language > module so it can be used with #lang? I copied some module and hacked it > until it worked, but I'm curious to know more details. </div>Sure! Have you seen this section in the Guide? <a href="http://docs.racket-lang.org/guide/languages.html" target="_blank">http://docs.racket-lang.org/guide/languages.html</a> If you'd like a whimsical, worked-out example, you can take a look at: <a href="http://hashcollision.org/brainfudge/" target="_blank">http://hashcollision.org/brainfudge/</a> I hope this helps! </blockquote></div> -- Ismael