The topic "The five member states" describes each of the five member states and, where appropriate, why a member might choose that state. Figure 1 summarizes how the member states relate to each other, and how they can change. Table 1 summarizes all the XCF macros and how they relate to member states. From this point forward in the text, when a member is said to be active or in the active state, that means the member is in the active member state. The same is true of the other four member states (created, quiesced, failed, or not-defined).