Also check out this tutorial: https://common-lisp.net/project/ecl/posts/ECL-Quarterly-Volume-V.html#orgheadline10 by Lexicall. Daniel -- Daniel Kochmański ;; aka jackdaniel | Przemyśl, Poland TurtleWare - Daniel Kochmański | www.turtleware.eu "Be the change that you wish to see in the world." - Mahatma Gandhi