I am attempting to do some game theory models for the collectible card game Legend of the Five Rings (www.l5r.com). The problem I am having is Polymorphisms, Inheritance, and Constructors in Maple 10. The game consists of several Card Types, each with distinct characteristics. I want to define a construtor module called CARD. It will have a TITLE and along with procedures getTitle() and setTitle(String). I then want to have a constructor module called HOLDING that is a CARD and has all the characteristic and procedures of CARD, but also a variable GOLDPRODUTION and procedures getGoldProduction and setGoldProduction.