it is not necessary to write $lang plai.I choose language plai scheme.That fixed. <div class="gmail_quote">On Thu, Aug 6, 2009 at 3:03 PM, Jay McCarthy <<a href="mailto:jay.mccarthy@gmail.com">jay.mccarthy@gmail.com</a>> wrote: <blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">The PLAI package is not a library that you require. It is a separate language. Put DrScheme in the module language and write #lang planet plai/plai:1:3 at the top of your file. This will allow you to write in the PLAI language. Refer to the documentation: <a href="http://planet.plt-scheme.org/package-source/plai/plai.plt/1/3/planet-docs/plai/index.html" target="_blank">http://planet.plt-scheme.org/package-source/plai/plai.plt/1/3/planet-docs/plai/index.html</a> for more information. Jay PS. I know the instructions about the book [1] refer to the require line, but that it is only to install the package, not to use it regularly. Actually, starting your program with the require line or the #lang line will both result in the installation of the package. 1. <a href="http://www.cs.brown.edu/%7Esk/Publications/Books/ProgLangs/2007-04-26/" target="_blank">http://www.cs.brown.edu/~sk/Publications/Books/ProgLangs/2007-04-26/</a> <div><div></div><div class="h5"> On Thu, Aug 6, 2009 at 5:24 AM, emre berat nebioğlu<<a href="mailto:beratn@gmail.com">beratn@gmail.com</a>> wrote: > Hey i am using drscheme 4.2 and my language mode Pretty big > and i am reading plai.Because of this i am using > (require (planet plai/plai:1:3)) > but when i try to debug my program to understand the function because almost > all function is from plai book. > I took this error > > compile: unbound identifier (and no #%top syntax transformer is bound) in: > num13 > > How can i fix this error.My program is excuted truly.I am sending an > attachment that involves the code. > </div></div>> _________________________________________________ > For list-related administrative tasks: > <a href="http://list.cs.brown.edu/mailman/listinfo/plt-scheme" target="_blank">http://list.cs.brown.edu/mailman/listinfo/plt-scheme</a> > > -- Jay McCarthy <<a href="mailto:jay@cs.byu.edu">jay@cs.byu.edu</a>> Assistant Professor / Brigham Young University <a href="http://teammccarthy.org/jay" target="_blank">http://teammccarthy.org/jay</a> "The glory of God is Intelligence" - D&C 93 </blockquote></div>