Kevin Kostrzewa thinks this is interesting: Seam A seam is a place where you can alter behavior in your program without editing in that place. From Chapter 4: The Seam Model from Working Effectively with Legacy Code by Michael Feathers Publisher: Prentice Hall Released: September 2004 Note template traits Share this highlight http://www.safaribooksonline.com/a/working-effectively-with/12881896/ Twitter Facebook Google Plus Email Get Instant Access Now Start a Free Trial Learn about Safari for Business Have an account? Sign in. Minimise Unlock the rest of Working Effectively with Legacy Code and 30,000 other books and videos By clicking this box, you confirm that you have read and agree to the terms and conditions of our Membership Agreement, and you understand that when your trial period ends, you will be required to provide billing information if you wish to continue using the service. Unlock the rest of this book Start a Free 10-Day Trial loading Learn about Safari for Business Have an account? Sign in.