Walkthroughs are a type of technical review where the producer of the reviewed material serves as the review leader and actually guides the progression of the review [6]. Walkthroughs have traditionally been applied to design and code. In the case of detailed design or code walkthroughs, test inputs may be selected and review participants then literally walk through the design or code with the set of inputs in a line-by-line manner. The reader can compare this process to a manual execution of the code. The whole group “plays computer” to step through an execution lead by a reader or presenter. This is a good opportunity to “pretest” the design or code. If the presenter gives a skilled presentation of the material, the walkthrough participants are able to build a comprehensive mental (internal) model of the detailed design or code and are able to both evaluate its quality and detect defects. Walkthroughs may be used for material other than code, for example, data descriptions, reference manuals, or even specifications