All are optional in this DTD for maximum flexibility, but obviously most have to be filled at one point in the process or another. In the tree above, all of the items that do not have sub items are attributes. For example, Name and DesignType are two attributes of the root element. Element Elements are the components of the object of focus. For example, factors and responses are two of the elements.
Elements have attributes, comments, and child elements of their own.
Note that Mixtures and Restricted Factors are described through constraints rather than treated as separate factor types to simplify the structure and the notation. All other products mentioned are registered trademarks or trademarks of their respective companies. Copyright 1997 Process Builder. All rights reserved.