Hi, This is just Jim trying to come to grips with Object Orientation again. As a simple example, let's say that we are making a program that plays American football. Let's further say that we are working with one player who is on the field. Should we allow the field to know where the player is on the field, or should we allow the player to know where the player is on the field? How do we determine the answer? Thanks. Jim Jim Homme, Usability Services, Phone: 412-544-1810. Skype: jim.homme Internal recipients, Read my accessibility blog<http://mysites.highmark.com/personal/lidikki/Blog/default.aspx>. Discuss accessibility here<http://collaborate.highmark.com/COP/technical/accessibility/default.aspx>. Accessibility Wiki: Breaking news and accessibility advice<http://collaborate.highmark.com/COP/technical/accessibility/Accessibility%20Wiki/Forms/AllPages.aspx> ________________________________ This e-mail and any attachments to it are confidential and are intended solely for use of the individual or entity to whom they are addressed. If you have received this e-mail in error, please notify the sender immediately and then delete it. If you are not the intended recipient, you must not keep, use, disclose, copy or distribute this e-mail without the author's prior permission. The views expressed in this e-mail message do not necessarily represent the views of Highmark Inc., its subsidiaries, or affiliates.