NOTE: Since you are working in the "Xrules Demo" stack, you should read references to the "development stack" or the "'Xrules' stack" as "this stack."
Before beginning development of an application you must copy the development stack from the distribution disk. This is the stack labeled "Xrules". The layout of the stack is illustrated in Figure 1. If you are using HyperCard 2.0, convert the copy to a HyperCard 2.0 stack. Rename the stack "Sample App".