Design Pattern capture design experience, but they have a different structutre and a different philosphy from other forms of guidance or specific methods. One simple definition is that is a solution to a problem within a context, i.e. a pattern describes a problem, a solution and where this solution has been found to work. Which of the following are a current design patterns:

A. Alphabetical list of command buttons

B. selection of a collection a collection of characteristics using check boxes

C. entry of the "state" by use of an alphabetical pull down menu

D. selection between mutally exclusive options using menu buttons

E. Numbers adjacent to all commands to be performed