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The following is one of the most powerful advantages of SysML over UML for domain modelling, and it is particularly useful for communicating engineering values to stakeholders:
SysML-1.6: 'SysML permits any property shown on an internal block diagram to also show compartments within the property box. These compartments may be given standard or user-customized labels just as on block definitions.'
SysML-1.6: 'All features shown within these compartments shall match those of the block or value type that types the property. The label of any compartment shown on the property box that displays contents belonging to the type of the property is shown with a colon character (“:”) preceding the compartment label. The compartment name is otherwise the same as it would appear on ...'These compartment will be denoted here IBD :features compartments:
We'll be using these IBD :features compartments a lot in the later trails. They can even be used with Ports, which turns out to be particularly useful.