view of the rationale, the 
conceptual environment, some of the important design issues, and an introduction to the 
terminology and concepts. 
– Section 1 gives purpose and scope, rationale, a view of the overall document 
structure, and the acronym list, glossary, and reference list for this document. 
– Section 2 provides an overview of audit and certification criteria, ideas about 
evidence to support claims, and a discussion of related standards. 
 
Metrics are empirically derived and consistent measur