Description of the illustration ex_linear_brah

The image illustrates the difference between a branch script and a linear script.In a branch script, a script tree shows hierarchical relationships among questions. Questions are parents of answers, which are in turn parents of follow-up questions. Sibling nodes on the tree represent mutually exclusive paths through the script, so the questions that are asked depend on the answers that are provided.In a linear script, the script tree hierarchy is flat. Questions are parents of answers, but answers have no children. Instead, all questions appear at the same hierarchical level. All questions are asked, and no branching logic is used.