Interface Events in Detail

This section gives a detailed description of the events that occur in the three common transactions. First the events at the user interface are treated, then those at the connection-control access point. 

In most schemes, acc is Boolean, where TRUE means accepted. In the general definition, any domain Test results TRUE, FALSE is permitted. 

Only TRUE and FALSE occur in the minimal requirements. Other results can be used in cases that remain unspecified in the minimal requirements, e.g., for error messages see Section 5.2.8, User-Friendliness . 

The boldface parameters are always necessary. Parameters in normal tjfpe have only been introduced to cover certain subtypes of the service. 

In the rest of this subsection, some alternatives to the decisions made above are discussed. 

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