My First line is #lang racket and the control in the lower left of the DrRacket window says "Determine language from source custom?"<div> <div class="gmail_quote">On Wed, Feb 8, 2012 at 2:48 PM, Neil Van Dyke <<a href="mailto:neil@neilvandyke.org">neil@neilvandyke.org</a>> wrote: <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"> What happens if you make the first line of the file be "#lang racket", and you make sure that the control in the lower left of the DrRacket window says "Determine language from source"? -- <a href="http://www.neilvandyke.org/" target="_blank">http://www.neilvandyke.org/</a> </blockquote></div> </div>