Chapter 7 Editorial

572-575 Change to: "The EMIX Power schema (POWER.XSD) can be viewed as the first extension of EMIX into a particular domain. The schema extends the Base EMIX Product Descriptions to define a variety of power products, in particular extending the Item Base to create units for Real Power, Reactive Power and Apparent Power, among others. The schema derives new Product Descriptions products with ways to describe levels and tiers." 576-577 Change to: "Electrical power markets have their own definitions for where the transaction occurs. The EMIX Power schema (POWER.XSD) extends the EMIX Interface to accommodate these definitions." 578 Change to: "The resulting extensions can populate..." 584 Change to: "...below, the interface can be a..." 601 Delete sentence fragment "Each of them also" 602 Change description of Scale Code to: "Alphabetic representations..." 610 Change title of Table 7-5 to "Elements of the Energy Item" 610 Change description of Scale Code to: "Alphabetic representations..." 612 Change title of Table 7-6 to "Defined Energy Items" 622 Change to "are shown in the table below." 623 Change description of Scale Code to: "Alphabetic representations..."